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696 items tagged "digital"
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world [+],
tv player [+],
sound [+],
shutter [+],
raspberry [+],
project [+],
max kilger [+],
matt [+],
identity [+],
ganesha [+],
demarcation line [+],
cisco security advisory [+],
cisco security [+],
chaos communication congress [+],
bluetooth [+],
aviosoft [+],
age [+],
vulnerability note [+],
vulnerabilities [+],
time [+],
speaker [+],
simple [+],
security [+],
rig [+],
proof of concept [+],
photography [+],
photo [+],
party [+],
motion [+],
microphone [+],
microcontroller [+],
library version [+],
library [+],
jukebox [+],
intervalometer [+],
hispanic [+],
hack in the box [+],
free software updates [+],
flash [+],
dslr cameras [+],
dslr [+],
diy [+],
digital library [+],
cross site scripting [+],
cisco show [+],
buffer overflow vulnerability [+],
authentication services [+],
amsterdam [+],
adapter [+],
zoetrope [+],
way [+],
video [+],
version [+],
tv platform [+],
tunes [+],
todd [+],
time lapse photography [+],
time lapse images [+],
stop [+],
stereo [+],
senders [+],
security vulnerabilities [+],
sansa [+],
rfid [+],
privilege escalation vulnerability [+],
printers [+],
portable [+],
pair [+],
painting [+],
noise pollution [+],
noise [+],
music [+],
mr. stock [+],
motion animation [+],
michael [+],
light painting [+],
lcd displays [+],
lcd [+],
laser [+],
jasper [+],
issue 32 [+],
interface [+],
hp printers [+],
home [+],
heart [+],
hand [+],
hack [+],
gantry [+],
fun [+],
fpga [+],
face [+],
escalation [+],
enclosure [+],
doppler shift [+],
digital video broadcast [+],
digital senders [+],
digital satellite tv [+],
design [+],
depth of focus [+],
day [+],
david [+],
dan [+],
controller [+],
computer [+],
cnc router [+],
classic [+],
chiptunes [+],
camera lens [+],
broadcast [+],
boombox [+],
bar [+],
audio player [+],
audio playback [+],
advanced digital broadcast [+],
advanced [+],
camera [+],
whisper [+],
electronic magazine [+],
electronic [+],
zip line [+],
zebes [+],
yu wu [+],
yesteryear [+],
yann seznec [+],
writeup [+],
world of medicine [+],
wooden craft [+],
wireless speaker [+],
wireless headphones [+],
wire [+],
windows [+],
william [+],
wifi [+],
whatever your reasons [+],
weighted keyboard [+],
webcam [+],
webapps [+],
web applications [+],
web [+],
weapons of war [+],
wax cylinders [+],
wax [+],
watt amplifier [+],
water droplets [+],
water [+],
warranties [+],
war [+],
volume leveling [+],
vladimir [+],
viscount [+],
vintage hardware [+],
viewfinder [+],
view camera [+],
view [+],
video feed [+],
verbose documentation [+],
use [+],
university of hokkaido [+],
university of dundee [+],
ugly [+],
ufo enthusiasts [+],
ufo detection [+],
ufo [+],
uav [+],
two versions [+],
turntable [+],
turn table [+],
tune [+],
tulips [+],
true user [+],
transportation [+],
transmitter [+],
traffic [+],
tracking software [+],
toyota matrix [+],
toyota [+],
touchtune [+],
touch tunes [+],
touch [+],
tit [+],
timey [+],
time lapse movie [+],
time lapse camera [+],
tic [+],
throwie [+],
threats [+],
thermal imaging cameras [+],
thermal imaging camera [+],
theremin [+],
term [+],
tents [+],
temperature [+],
tears [+],
teac [+],
tastes [+],
tascam [+],
tac [+],
table [+],
system controller [+],
system [+],
sweet tunes [+],
susan [+],
surround [+],
summer thanks [+],
suitcase [+],
success thanks [+],
subject mater [+],
styharp [+],
streams [+],
stop motion [+],
stock stereo [+],
still images [+],
steven [+],
stethoscope [+],
steady rhythm [+],
stabilization [+],
squeezebox [+],
spy photographs [+],
spy novels [+],
speedometer [+],
speaker projects [+],
speaker project [+],
soundpuddle [+],
soundcard [+],
sound volume [+],
sound o [+],
sound files [+],
sound chips [+],
sound chip [+],
sony handycam [+],
sony [+],
solution paths [+],
soda bottle [+],
soda [+],
smart phone [+],
slave [+],
sky [+],
single board computer [+],
simultaneous notes [+],
simon frank [+],
silence [+],
side trip [+],
show [+],
shout out louds [+],
shoulder [+],
shoe [+],
shameel arafin [+],
seznec [+],
server [+],
serioux [+],
sensor data [+],
security conference [+],
sean mcintyre [+],
sculpting [+],
scott harden [+],
scanning [+],
sansa clip [+],
sample [+],
sam [+],
ryan [+],
rpi [+],
rotary phone [+],
rotary [+],
roll [+],
roadside [+],
rick astley [+],
rf module [+],
rf link [+],
rf board [+],
reworking [+],
reverse [+],
reusing [+],
rest [+],
rendering software [+],
remote [+],
reid bingham [+],
refrigerator [+],
reflector [+],
reference design [+],
reference [+],
redstone [+],
red light camera [+],
recorder [+],
record [+],
recognition [+],
receiver pair [+],
ray [+],
ramesh raskar [+],
rainbow machine [+],
rainbow [+],
radio waves [+],
radio case [+],
radio [+],
radar gun [+],
radar [+],
quinn dunki [+],
qr code [+],
pvc elbow [+],
pupil [+],
projector [+],
professional photographers [+],
printing [+],
printer [+],
powershot [+],
power adapter [+],
power [+],
potentiometer [+],
possession [+],
pool [+],
pollution [+],
police radar [+],
polaroids [+],
point and shoot cameras [+],
point and shoot camera [+],
pocket [+],
ploy [+],
plastic soda bottle [+],
place in time [+],
pir sensors [+],
pir sensor [+],
pir [+],
pinewood [+],
pig sty [+],
pig [+],
piece of music [+],
picture [+],
pic microcontroller [+],
pic [+],
piano hammers [+],
physical tokens [+],
physical memory [+],
physical [+],
photograph [+],
photo printer [+],
photo booth [+],
photo 3d [+],
phone [+],
period of time [+],
performance [+],
pcbs [+],
paulo [+],
parabolic microphone [+],
parabolic [+],
papercraft [+],
panda [+],
palm of your hand [+],
painting effects [+],
pacemaker [+],
overhead camera [+],
overhead [+],
outdoor [+],
optimizing [+],
optical fibers [+],
optical [+],
opencv [+],
old radio [+],
noise complaints [+],
nixie tubes [+],
nixie [+],
nintendo [+],
nikon [+],
nfl football games [+],
nex [+],
nevada [+],
nes [+],
neighbors [+],
name [+],
musical toy [+],
musical [+],
music thanks [+],
music player [+],
museum staff [+],
museum exhibits [+],
museum exhibit [+],
museum [+],
muris [+],
msp430 [+],
msp [+],
mp3 decoder [+],
moving time [+],
movie [+],
motorcycle [+],
mother brain [+],
moment of silence [+],
moisture sensor [+],
module [+],
mod files [+],
misc [+],
mike worth [+],
mike field [+],
microsoft windows [+],
microsoft [+],
michael clemens [+],
michael chen [+],
mesoiam [+],
merit [+],
memory [+],
memorable moment [+],
medical [+],
maxjusticz [+],
matthew herbert [+],
matthew br [+],
matthew [+],
matrix [+],
math [+],
manual camera [+],
man [+],
machine [+],
luke skaff [+],
luke [+],
lossless audio [+],
loose wires [+],
long periods of time [+],
lonely soul [+],
lonely heart [+],
locker service [+],
locker [+],
lithium cell [+],
link [+],
line cameras [+],
lighting conditions [+],
light photons [+],
light amp [+],
library reader [+],
lib [+],
level electronics [+],
level [+],
leonidas [+],
lens cap [+],
lens adapter [+],
lee [+],
leds [+],
lazy susan [+],
laser diode [+],
language other than english [+],
kyle jason [+],
knock off [+],
kit [+],
king diamond [+],
kind [+],
keytar [+],
junk box [+],
john lennon [+],
john [+],
joey [+],
joe fitz [+],
jeri [+],
jensen [+],
jeff ledger [+],
jason [+],
jaroslav [+],
james dalby [+],
iterations [+],
isolation booth [+],
isolation [+],
introduction to digital electronics [+],
internet [+],
interference [+],
interesting things [+],
instrument [+],
instant replay [+],
input connector [+],
input [+],
infrared cameras [+],
improving [+],
impressive beasts [+],
imaging [+],
icebox [+],
ice [+],
hotfile [+],
hot shoe [+],
horizon [+],
honda motorcycle [+],
home recording studio [+],
home automation [+],
hollywood [+],
hokkaido japan [+],
hokkaido [+],
highway [+],
high speed photography [+],
hex editor [+],
heart sound [+],
headphones [+],
headphone [+],
head mounted [+],
hd ready [+],
hao yu [+],
hackaday [+],
gun [+],
guide [+],
grills [+],
gregory charvat [+],
gimp [+],
ghz [+],
gesture recognition [+],
garage workshop [+],
garage shop [+],
garage [+],
gaming table [+],
gaming [+],
gamer [+],
fun time [+],
fun project [+],
fritz [+],
freeze [+],
foreground [+],
focus feature [+],
focus [+],
florian amrhein [+],
flip books [+],
flash timer [+],
flash modules [+],
flash module [+],
flash adapters [+],
film projector [+],
fifty dollars [+],
fifty [+],
fiber [+],
femto photography [+],
favorite music [+],
fat16 file system [+],
facial recognition software [+],
facial [+],
fabrication [+],
eye tracking [+],
eye [+],
external microphone [+],
external eeprom [+],
exploits [+],
evidence [+],
erich [+],
entertainment [+],
endurance races [+],
elevator music [+],
electronics projects [+],
electroluminescent wire [+],
effect [+],
ebay [+],
easy camera [+],
earning [+],
dtv broadcasts [+],
drunken friend [+],
droplets of water [+],
dr. julius neurbronner [+],
downstairs neighbors [+],
downside [+],
double flash [+],
doppler effect [+],
dongle [+],
don [+],
dominik [+],
dolly [+],
dollar bills [+],
docking system [+],
dmg [+],
diy speakers [+],
diy philosophy [+],
distance [+],
display [+],
disco light [+],
dino [+],
digitize [+],
digital tv [+],
digital to analog converter [+],
digital stethoscope [+],
digital speedometer [+],
digital satellite television [+],
digital ir [+],
digital gaming [+],
digital evidence [+],
digital electronics course [+],
digital certificates [+],
digital authentication [+],
difference [+],
design considerations [+],
design consideration [+],
descriptive [+],
derek [+],
depth [+],
deep freeze [+],
decoding [+],
decoder chips [+],
david prutchi [+],
dave [+],
danman [+],
dancing to the music [+],
dale [+],
dac chip [+],
d. this [+],
cryptography [+],
craig [+],
countermeasure [+],
converter [+],
convert [+],
controller works [+],
control protocol [+],
control [+],
condenser microphone [+],
concert bootlegs [+],
concept [+],
computer vision course [+],
computer speakers [+],
computer speaker [+],
commodore64 [+],
coin cell [+],
code [+],
clip [+],
click of a button [+],
clay [+],
cisco [+],
cinematography [+],
chronos [+],
chiptune [+],
children [+],
cheap digital camera [+],
character [+],
chaos [+],
cell battery [+],
cell [+],
ceiling mounted projector [+],
catcher [+],
case [+],
careful driver [+],
capture [+],
canon eos lenses [+],
canon eos [+],
canon [+],
camera shutter [+],
camera setup [+],
camera rig [+],
camera movements [+],
camera lenses [+],
camera dollies [+],
camera controller [+],
camera control [+],
button battery [+],
building [+],
build [+],
bryan [+],
bruce schneier [+],
bronislow [+],
briefcase [+],
brian delacruz [+],
brian benchoff [+],
brave birds [+],
box [+],
booth [+],
boomcase [+],
boom box [+],
bookshelf speakers [+],
bogdan [+],
bluetooth headphones [+],
black hat [+],
bitrate [+],
binoculars [+],
bill porter [+],
bellows [+],
battery [+],
bass [+],
bar graph [+],
badge [+],
bad traffic [+],
backyard parties [+],
avoid [+],
automatic volume [+],
automated [+],
audiobook [+],
audio volume [+],
audio transmitter [+],
audio spectrum [+],
audio recorder [+],
audio input [+],
audio hardware [+],
audio editing software [+],
audio chips [+],
audio amp [+],
audacity [+],
astrophotography [+],
assortment [+],
arafin [+],
anthropologist [+],
antenna analyzer [+],
antenna [+],
anna [+],
anime character [+],
anime [+],
animation creation [+],
animation [+],
analyzer [+],
analog to digital [+],
analog input [+],
alex [+],
advisory [+],
adam [+],
aaron [+],
Wireless [+],
Software [+],
90th birthday [+],
3d scanner [+],
3d rendering [+],
3d printer [+],
3d camera [+],
hacks [+],
hebrew [+],
vulnerability [+],
cameras [+],
zx3,
zune,
zip ties,
zeiss ikon,
yukikaze,
yoshi akai,
year,
yashika,
yashica,
yamaha dd35,
yamaha,
xss,
xna,
wub,
wouldn,
workbench,
wood screws,
wolf,
wireless headset,
wireless adapter,
wilson,
wildlife,
wiimote,
wife,
whim,
wednesday,
wedding,
web brand,
wax cylinder,
wave forms,
wav file,
waterproof camera,
warfare,
want,
wall,
w3c xml,
vuvuzela,
vtol,
vsergeev,
vrt,
volume level,
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voice recorder,
voice coils,
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vmusic,
vladimir demin,
visualization system,
visual feedback,
vision,
virtual reality,
violins,
vintage car,
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vinod,
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viewfinders,
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view cars,
vienna,
video photography,
video effects,
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victorian hardware,
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vertical strips,
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using digital camera,
user interface,
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usb protocol,
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upload,
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university of new hampshire,
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unit,
underwater microphone,
understatement,
uncrippling,
unauthorized access,
uble,
u.s.,
txt,
tv b gone,
tube preamp kit,
tube amps,
tube amp,
tube,
trust,
trombone,
tripod,
trigger,
travis,
tranz 330,
translation,
trainer,
traditional midi,
track,
toyota corolla,
toy,
touch screen,
top notch,
tool,
tony lovell,
tonematrix,
tone generator,
toby,
tiny tube,
tiny speakers,
tiny point,
tiny,
timur civan,
timothy,
timelapse,
time lapse videos,
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time lapse photos,
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tim okeefe,
tilt shift,
tiles,
thieves,
thermal printing,
theramin,
texas,
tetris,
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terminally,
tent poles,
tent,
television show,
television,
technology strategy,
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teardown,
team building exercise,
team,
target platform,
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tape decks,
tape deck controls,
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taking into consideration,
taichi,
t shirt,
systems computers,
synthesizer system,
synthesizer,
synth manufacturer,
synth,
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supply vessel,
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supermacro,
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style,
studio photography,
studio,
structured,
stroke,
string musical instrument,
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strikes,
street performances,
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streaming audio,
streamer,
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store,
storage options,
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stock option,
stock electronics,
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steve chapman,
steroscopic,
stereoscopic pictures,
stereo microscope,
stereo amplifier,
stephen,
step,
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steady hand,
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status messages,
station,
stan,
stage lighting,
stackable,
stack buffer,
stabilizer,
ssx tricky,
square wave,
spot satellite,
spent three,
speed tester,
speed photographs,
speed,
spectrum analyzer,
spectrum,
speakers,
speaker mounted wav,
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spdif output,
spdif,
spark plug,
spark,
spare room,
space,
south korea,
south,
source,
soundboard,
sound synthesis,
sound speakers,
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sophisticated systems,
sonata,
something,
solenoids,
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software packages,
software filter,
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soft light source,
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smart flash,
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slr,
slouch,
slides,
slide projector,
site,
siren,
sinterklaas,
single lens reflex camera,
single column,
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simon inns,
signature,
signal generator,
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side lighting,
shutter speed,
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shred,
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shoulder holster,
shot,
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shifter,
shield,
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seven segment display,
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servo motors,
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sd card,
script sql,
scribe,
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scope,
schuble,
schematics,
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sand,
samuel sargent,
samsung,
sampling rate,
sales pitch,
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ryan challinor,
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rubens tube,
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roninsynth,
ron,
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robust architecture,
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robomow,
robo vibe,
robert,
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road bikes,
risk,
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ricoh gr,
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rickrolling,
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rich decibels,
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rfidj,
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resistive touch screen,
reproduction capabilities,
repetitive events,
removal,
remote shell,
remote controls,
remote controlled,
remote control car,
remote control,
remote camera,
remote buffer overflow vulnerability,
remote buffer overflow,
remember,
refresh,
reflex 35mm,
refit,
reetz,
red noise,
red,
record player,
rechargeable tools,
receiver,
receipt,
reason,
rear ends,
rear derailleur,
reality,
real time,
read,
rca plugs,
rc helicopter,
rave,
rats,
rapatronic,
rambler ambassador,
radios,
radio volume,
radio stores,
radio shack,
quieter,
quick,
quality optics,
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pvc conduit,
pujol,
public computers,
providers,
prototyping system,
propeller,
project details,
programming guru,
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profhankd,
printing camera,
price tags,
pressure,
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power supply,
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potato,
postage,
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portal,
portable cd player,
port hunter,
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polaroid land camera,
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poc,
pnp transistor,
plywood,
plumbing fittings,
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pleasing sound,
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platforms,
plate,
pitch shifter,
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pinky finger,
pink noise generator,
pinhole camera,
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ping pong ball,
pinball machines,
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piezo sensors,
piezo elements,
pictures of insects,
pico,
pickpockets,
pic based,
piano,
photos,
photographs,
photographing,
photo transistors,
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photo booths,
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percussion instruments,
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pentax dslr,
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pdif,
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orange tiles,
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ops,
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online auction site,
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old time music,
old cameras,
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office,
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o keefe,
numark,
noisy,
noisemakers,
nikon d3,
nikon d200,
niklas roy,
night vision goggles,
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nigel,
nice design,
newspaper,
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new digs,
new digital camera,
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net,
necessary connections,
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neat features,
neal,
nathan,
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music visualizations,
music controller,
music composition,
music collections,
munki,
multiple,
muff,
muck,
msps,
mp3s,
mp3 version,
mp3 solutions,
mp3 player,
mower,
movement,
mounting brackets,
mount leds,
mount,
motorola dc800,
motorola,
motorized camera,
motorized,
motion blur,
moritz wolpert,
moritz,
monotron,
mono filament thread,
monitor,
moment,
modern,
model,
mobile option,
mission,
misa,
minox,
miniscule,
mini,
mileage,
mila,
mike davenport,
miguel vicente,
midibox,
midi synthesizer,
midi station,
midi signals,
midi device,
midi controller,
midi connection,
midi,
microsd memory card,
microsd card,
microscopic bits,
microscope lens,
microscope imaging,
microscope camera,
microscope adapter,
microscope,
microphones,
microminded,
microcontrollers,
micro,
michael mcintyre,
miceuz,
mic input,
mic,
mfp,
method,
meter,
messages,
message,
menu system,
melody generator,
megapixel sensor,
megapixel image,
mega man 2,
mediums,
mechanical arm,
mcdonald,
max msp,
max,
matt kemp,
matt keeter,
mathieu,
master,
massive midi,
masquerade party,
masquerade mask,
masquerade,
mask,
mashup,
marv,
markus gritsch,
markus,
mark houston,
mark,
mario,
marine speakers,
maple,
manipulation applications,
manipulation,
management,
malware,
malikaii,
malaysia,
makita,
magnetic reed switch,
macro photos,
macro photography,
macro lens,
macro images,
macro,
machining,
macbook,
lung power,
luke jerram,
lukasz,
lucas,
lozzless,
low light camera,
lovell,
lot,
longhorn,
long camera,
local,
lizzie,
live electronics,
live,
little chance,
little bugger,
listening to music,
liquid droplet,
linksys wrt54g,
linksys,
linear bearing,
lightning photography,
lightning,
lighting,
light tube,
light sources,
light situations,
light sensors,
light sensor,
light art,
light,
life,
lens reflex,
lens assembly,
leica ii,
lego pieces,
lego nxt,
lego bricks,
lego,
legal channels,
left half,
led,
lcd screens,
lcd screen,
lcd interface,
lawn mower,
lawn,
law,
laurie martin,
laurent oudot,
lathe,
laser turret,
laser projectors,
laser projection,
laser powered,
laser pointer,
larry leibrock,
laptop,
lapse,
korg triton,
korg keyboard,
korg,
korea,
kodak,
knockoff,
kitchen,
kinect,
keychain camera,
keyboard,
kequencer,
ken burns effect,
ken burns,
keeter,
kaoss pad,
kaoss,
kalin,
jvc camcorder,
justin quinnell,
justin,
junk,
jumper wires,
julius,
judicial review,
josh,
jose,
jornal,
jonathan danforth,
jonathan bergqvist,
jonas kroyer,
jon,
john williams,
johannesburg,
joe bain,
joe,
jobsite radio,
jobsite,
jimmy,
jim,
jig,
jerry,
jerram,
jeremy blum,
jeremy,
jennifer granick,
jean philippe roch,
jean philippe,
jean baptiste bedrune,
jean baptiste,
jean,
jas strong,
jas,
jane,
jan,
james lyne,
jack o lantern,
jack black,
jack,
issue 1,
isn,
irrigation pipe,
irl,
ir signals,
ir photo,
ir communication,
ipod shuffle,
ipod,
iphone,
ipad,
intro,
internet radio player,
internals,
interface implementation,
interesting science,
interest,
interchange,
intel,
integrated circuits,
integrated circuit,
instructable,
insecure method,
input and output,
injection molded plastic,
injection,
infrared signals,
infrared remote control,
infrared light,
infrared leds,
infrared filter,
infrared camera,
information user,
information,
infancy,
inexpensive tools,
inclusion,
immerman,
image,
ietf,
idj,
icecast server,
hz hum,
hyundai sonata,
hyundai,
hunting,
humberto,
human,
huge collection,
huffman,
htpc,
hpodio,
hp mfp,
hp digital,
housing,
hot glue,
hose clamp,
homemade music,
homemade,
home theater projectors,
home entertainment center,
holster,
holes,
hole components,
hobbyist,
hmx t,
hmx,
hmd,
hire,
high speed camera,
high bandwidth,
high altitude balloons,
high altitude balloon,
hidden messages,
hidden,
hey,
hero,
heavy lifting,
heat sink,
hearts,
heartfelt message,
hearing,
headset,
headphone jack,
headphone extension cord,
head mounted display,
head,
hdd,
hdcp,
hd radio receiver,
hd camera,
harshness,
harrison pham,
harold edgerton,
hard time,
hangout,
halloween spirit,
halloween,
half,
hacking game,
hackerspace,
hacker,
hackable,
guitar hero,
guitar effect,
guitar echo,
guitar,
gross body,
groovebox,
grissini,
griffin milsap,
greg,
greeting cards,
grandparents,
gradient,
gopro,
google street view,
google street,
google,
goods,
goodness,
good job,
glue,
glove,
glados,
gist,
gimmick,
gift,
gifs,
georgia tech center,
georg,
gently,
generator,
generation,
generating,
gem,
garden lamps,
gap,
games,
game of life,
game controller,
game boy program,
game,
galvanic skin response,
gallery,
funky beat,
full featured,
friend,
freshener,
framework,
frame,
fpga development board,
fpga board,
fpga based,
four axis,
form,
forgery,
forensics,
force,
fones,
foldaway,
focus point,
focus modes,
floodlights,
flikr,
flight simulator,
flight of stairs,
flight,
flexible module system,
flex sensors,
fleetwood audio,
flat bass,
flash units,
flash synchronization,
flash storage,
flash duration,
flash bulb,
flash application,
fisheye,
finished board,
fingerprints,
filter circuits,
film camera,
film,
file upload,
file,
fidelity,
fever,
festivities,
fernando,
fergus kendall,
fergus,
fellow hacker,
feature additions,
favorite songs,
farmyard,
farm,
family time,
faking,
fake,
fader control,
facing the sun,
fabian,
fab lab,
extreme,
external ac,
express,
exploiting,
exoskeleton,
existing design,
exercise,
ethernet features,
ethernet,
etch a sketch,
eric austin,
erector,
equipment,
epoxy,
epic,
eos lens,
eos,
entire library,
enjoy,
engineer,
empathy,
electronics project,
electronic musical instruments,
electro,
electrical signals,
electric guitar,
eight steps,
egg timers,
effort,
editor,
economy act,
economy,
ecommercemax,
ebay auctions,
eastwest institute,
ears,
ear warmers,
ear muffs,
ear,
dupe,
duncan murdock,
dubstep,
dub,
dual camera,
dslr camera,
ds camera,
drummer,
drum machine,
drum kit,
drum head,
drudgery,
droplets,
drm,
driver chip,
drive music,
drawdio,
dough,
doug paradis,
double slide,
doorbell,
door peephole,
dongle hack,
dominate,
dollar range,
document library,
document,
dock,
dmx,
dlsr,
dkpeterborough,
diy project,
ditches,
distant object,
distant landscapes,
discovery kit,
dillon,
digitalampmp,
digital warfare,
digital volume control,
digital version,
digital underground,
digital synth,
digital storage,
digital signature,
digital security,
digital rights management,
digital pinball,
digital picture frame,
digital photographer,
digital music,
digital micromirror device,
digital measuring tape,
digital logic,
digital kitchen,
digital interchange,
digital information,
digital imaging,
digital image,
digital guitar,
digital economy,
digital detectives,
digital content protection,
digital consulting,
digital certificate,
digital cameras,
digital camera manufacturers,
digital camera,
digital audio workstation,
digital audio signals,
digital audio player,
digital audio editor,
digital analog converter,
digital amp,
different materials,
different colored pens,
didn,
didgeridoo,
diaphragm,
devon,
development kit,
detector,
detectives,
detail work,
destin,
desirable feature,
design contest,
derek enos,
depth of field,
denis mo,
denis,
demo,
demin,
delivering,
delay,
degree panoramic views,
degree images,
degree,
defense,
decorative fabric,
deciphered,
decibels,
decibel,
debraj,
death,
dead battery,
dc power adapter,
dc jack,
david byrne,
data breaches,
data breach,
data,
dashboard,
dark subjects,
dark shadows,
daniel reetz,
daniel,
dan hemingson,
d. while,
d. degree,
d day,
czech ing,
cylinder,
cyber criminals,
cyber commander,
cyber,
curtis e.a. karnow,
curt von badinski,
cube,
crutch mounted,
crt,
crowd,
crossfader,
cross,
credentials,
creating music,
crash space,
crash proof,
crash,
crane,
cpld,
coworkers,
cornell,
coppers,
cootie,
cool project,
cookie,
conversion,
controlling,
contest submission,
contest,
content,
consulting,
conduit box,
computer science degree,
computer motherboard,
composing music,
complementary book,
compact,
communication port,
communication,
commercial photographer,
commander talks,
color organ,
color,
collin cunningham,
college version,
college,
collective eye,
collection,
coil,
coby,
clothes line,
clever one,
clever combination,
classmates,
class d audio amplifier,
class d amplifier,
clap your hands,
clap,
citizenship,
circuit,
cinema,
christopher mitchell,
christopher,
chicken,
charles wyckoff,
charles,
chan,
certificate authority,
certificate,
cellphone manufacturers,
cellphone,
ccd,
cavity,
cassette adapter,
cassette,
cart script,
cart,
careful calculation,
care,
cardboard box,
card characteristics,
card,
car one,
car audio speakers,
car,
canon powershot,
canon fd lenses,
canon eos 5d,
canon dslr camera,
canon digital cameras,
canon digital,
canon ae 1,
canon a70,
canon 7d,
canon 5d,
cannon powershot cameras,
cannon,
camera trickery,
camera stabilizer,
camera software,
camera rigs,
camera one,
camera mounts,
camera module,
camera flash,
camera exposure,
camera experts,
camera enclosure,
camera dolly,
camera crew,
camera booms,
camera boom,
camera accessory,
camcorder,
californians,
california,
calibration,
calendar,
caleb kraft,
caleb,
cabinet,
c. above,
c xml,
button accordion,
burning man festival,
bunkers,
bunker,
bullet,
bugtraq,
buffer overflow exploit,
buffer overflow,
bruno ratnieks,
browser session,
broken camera,
brock roland,
bright images,
brian grabski,
brian,
brent,
breakout box,
breakout,
breadboard,
brass,
brand web,
brand developers,
brand,
brad blucher,
boy,
bounce,
botnets,
bot,
boris,
boring class,
book,
bonza,
bones,
bomb,
body movements,
body,
boatload,
board fabrication,
board,
blurred images,
blum,
bluetooth module,
bluetooth headset adapter,
bluesnarfing,
blue leds,
blucher,
blank canvases,
blair,
black,
bit,
billy,
bike computer,
bigtime,
bhautik,
bezel,
beth,
bertrand fan,
bertrand,
bergqvist,
bending,
ben laskowski,
ben krasnow,
ben heck,
ben,
bells and whistles,
beer,
beat,
bearing system,
beach,
bayan,
battery pack,
battery life,
bassam,
based computers,
bart dring,
banner image,
banfield,
band,
balloon flight,
balloon,
ball,
badwolf,
backlight,
background noise,
background material,
axis camera,
avr,
automatic,
auto focus,
auto,
authors,
authority,
authentication,
aural experience,
audio synthesizer,
audio streamer,
audio stations,
audio signal,
audio quality,
audio message,
audio manipulation,
audio inputs,
audio filters,
audio connector,
audio cassettes,
audio cabinet,
audio ads,
attacker,
atomic bomb,
artwork,
art,
arrays,
array,
arm processor,
archophone,
arcade systems,
arcade gaming,
arcade,
arc music,
arbitrary files,
arbitrary code execution,
approach,
application,
aperture ring,
aperture,
antique radio,
antique,
antibore,
annoy,
andrew immerman,
andrew,
analog voltage,
analog tape,
analog oscilloscope,
analog oscillators,
analog,
anaglyphic,
anaglyph images,
an6884,
amplifier circuit,
amplifier,
amp,
amount of time,
american readers,
altitude,
all terrain,
algorithms,
algorithm,
alfredo ortega,
alcatel lucent,
alarm clock,
alan,
airport express,
airport,
air wick,
air guitars,
air gap,
air freshener,
air,
afternoon,
aerial,
adrian onsen,
adrian,
admirable goal,
adam laurie martin herfurt,
adam laurie,
acquisition,
accurate focus,
accelerometer,
Release,
Hardware,
ARM,
9v battery,
3d photos,
3d animations,
360 degree view
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1:00
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Hack a Day
Honestly, we never wondered how those old film cameras used to put the date stamp in the lower right-hand corner of the frame. Luckily, [Ben Krasnow] does not suffer from this deplorable lack of curiosity, and his video teardown of a date-stamping film camera back (embedded below) not only answers the question, but provides a useful lesson in value engineering.
For the likely fair fraction of the audience who has never taken a photo on film before, cheap 35-mm cameras were once a big thing. They were really all one had for family snapshots and the like unless you wanted to invest in single-lens reflex cameras and all the lenses and accessories. They were miles better than earlier cartridge cameras like the 110 or – shudder – Disc film, and the cameras started getting some neat electronic features too. One was the little red-orange date stamp, which from the color we – and [Ben] assumed was some sort of LED pressed up against the film, but it ends up being much cooler than that.
Digging into the back of an old camera, [Ben] found that there’s actually a tiny projector that uses a mirror to fold the optical path between the film and a grain-of-wheat incandescent bulb. An LCD filter sits in the optical path, but because it’s not exactly on the plane of the film, it actually has to project the image onto the film. The incandescent bulb acts as a point source and the mirror makes the optical path long enough that the date stamp image appears sharp on the film. It’s cheap, readily adapted to other cameras, and reliable.
Teardowns like this aren’t fodder for [Ben]’s usual video fare, which tends more toward homemade CT scanners and Apollo-grade electroluminescent displays, but this was informative and interesting, too.
Thanks for the tip, [Jan].
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4:00
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Hack a Day
[Don] bought some off-brand Bluetooth earbuds online that actually sound pretty good. But while it’s true that they don’t require wires for listening to tunes, the little storage/charging box they sleep in definitely has a micro USB port around back. Ergo, they are not truly wireless. So [Don] took it upon himself to finish what the manufacturer started. Because it’s 2019, and words have meaning.
Finally, he had a use for that Qi charger he’s had lying around since the Galaxy S5 era. [Don] pried the earbud case open with a guitar pick and found a nicely laid-out charging circuit board without any black goop.
Once he located ground and Vcc pads, it was just a matter of performing a bit of surgery on the coil’s pins so he could solder wires there instead. Miraculously, the Qi coil fit perfectly inside the bottom of the case and the plastic is thin enough that it doesn’t interfere with the charging.
Want to try it for yourself? [Don]’s done an excellent job of documenting this hack, with clear pictures of every step. Soon you’ll be able to rid yourself of all those pesky USB cables.
Of course, [Don] still has to plug the charging base into the wall. If he ever wanted to add another level of wireless, he could always retrofit the base coil into his laptop.
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1:00
»
Hack a Day
We’ve always felt that sections of PVC pipe from the home improvement store are a criminally underutilized construction material, and it looks like [Troy Proffitt] feels the same way. Rather than trying to entirely 3D print the enclosure for his recently completed portable Bluetooth speaker, he combined printed parts with a piece of four inch pipe from the Home Depot.
While using PVC pipe naturally means your final hardware will have a distinctly cylindrical look, it does provide compelling advantages over trying to print the entire thing. For one, printing an enclosure this large would have taken hours or potentially even days. But by limiting the printed parts to accessories like the face plate, handle, and caps, [Troy] reduced that time considerably. Of course, even if you’re not in a rush, it’s worth mentioning that a PVC pipe will be far stronger than anything your desktop FDM printer is likely to squirt out.
[Troy] provides links for all the hardware he used, such as the speakers, tweeters, and the Bluetooth audio board itself. The system is powered by an 1800 mAh 3S RC-style battery pack that he says lasts for hours, though he also links to a wall adapter that can be used if you don’t mind being tethered. Unfortunately it doesn’t look like he has any internal shots of the build, but given the relatively short parts list, we imagine it’s all fairly straightforward inside.
While this is certainly a respectable looking build considering it started life in the plumbing aisle, we have to admit that we’ve seen some portable Bluetooth speakers with fully 3D printed enclosures in the past that looked absolutely phenomenal. The tradeoff seems pretty clear: reuse existing materials to save time, print them if you don’t mind reinventing the wheel occasionally.
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11:30
»
Hack a Day
Many cameras these days have optional remotes that allow the shutter release to be triggered wirelessly. Despite this, [Foaly] desired more range, and more options for dealing with several cameras at once. As you’d expect, hacking ensued.
[Foaly] uses Silver modules to photograph rocket launches safely.The system goes by the name of Silver, and is modular in nature. Each Silver module packs a transmitter and receiver, and can send and receive trigger orders to any other module in range. This allows a module to be used to trigger a camera, or be used as a remote to control other modules. There’s even a PC interface program that controls modules over USB.
Modules are also capable of sharing configuration changes with other modules in the field, making it easy to control a large battery of cameras without having to manually run around changing settings on each one. Oh, and it can run as a basic intervalometer too.
LoRa is used for wireless communications between modules, giving them excellent range. [Foaly] successfully used the remotes at ranges over 500 meters without any dropouts, capturing some great model rocket takeoffs in the process.
Silver is a highly robust project that should do everything the average photographer could ever possibly need, and probably a good deal more. Firmware and board files are available for those eager to make their own.
We’ve seen several very impressive camera augmentations entered into the 2019 Hackaday Prize, from ultra high-speed LED flash modules to highly flexible automatic trigger systems.
The HackadayPrize2019 is Sponsored by:



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1:01
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Hack a Day
Under the right circumstances, Gaussian blurring can make an image seem more clearly defined. [DZL] demonstrates exactly this with a lightweight and compact Gaussian interpolation routine to make the low-resolution thermal sensor data display much better on a small OLED.
[DZL] used an MLX90640 sensor to create a DIY thermal imager with a small OLED display, but since the sensor is relatively low-resolution at 32×24, displaying the data directly looks awfully blocky. Gaussian interpolation to improve the display looks really good, but it turns out that the full Gaussian interpolation isn’t a trivial calculation write on your own. Since [DZL] wanted to implement it on a microcontroller, the lightweight implementation was born. The project page walks through the details of Gaussian interpolation and how some effective shortcuts were made, so be sure to give it a look.
The MLX90640 sensor also makes an appearance in the Open Thermal Camera, one of the entries for the 2019 Hackaday Prize. If you’re interested in thermal imaging, don’t miss this teardown of a thermal imaging camera.
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22:00
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Hack a Day
Were you aware that there’s a market for backpack-housed live streaming video systems, and that they can cost as much as $1600? Apparently these things are popular with social media moguls who want to stream themselves living their fabulous lives to people sitting at home watching on YouTube or Twitch. But believing that even slack jawed yokels like us should have access to the same technology, [Speedify Labs] has been working on less expensive DIY alternative based on the Raspberry Pi 4.
Now you’ll note we didn’t use the term “cheap” to describe this build. As detailed here, it’s still going to cost you around $600. You could always swap out the Sony AS-300 camera and Elgato Cam Link capture device with cheaper versions, but the goal of this project was to deliver high quality HD video that’s comparable to what the professional rigs are capable of, so those kinds of concessions were avoided.
Whatever video source your audience and budget are comfortable with, it eventually gets fed into the Raspberry Pi 4 which uses an ffmpeg
one-liner to encode the video and ultimately push it out as 720p at 24 FPS, which [Speedify Labs] says seems to be about as good as the Pi can do. The operator is able to start and stop the stream at will using a Circuit Playground Express and a Python script.
Of course, the trick to all of this is getting the video stream uploaded over potentially flaky mobile networks. But as you might have guessed, that’s where [Speedify Labs] gets to flex their eponymous product: a VPN with software channel bonding that allows you to combine multiple Internet connections for higher bandwidth and reliability. With their software, the Pi is able to stream the video through two mobile phones connected to it over USB. As demonstrated in the video below, the setup was able to maintain the stream even as they walked in and out of buildings.
Our very own [Lewin Day] wrote about his experiments with streaming video over 4G on the Raspberry Pi which might be of interest to anyone looking to take their show on the road. Though if you want to get serious it would be worth taking a look at the impressive mobile streaming rig that [Jenny List] saw at the BornHack 2019 hacker camp in Denmark.
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13:00
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Hack a Day
In our info-obsessed culture, hackers are increasingly interested in ways to quantify the world around them. One popular project is to collect data about their home energy or water consumption to try and identify any trends or potential inefficiencies. For safety and potentially legal reasons, this usually has to be done in a minimally invasive way that doesn’t compromise the metering done by the utility provider. As you might expect, that often leads to some creative methods of data collection.
The latest solution comes courtesy of [Keilin Bickar], who’s using the ESP8266 and a serial TTL camera module to read the characters from the LCD of his water meter. With a 3D printed enclosure that doubles as a light source for the camera, the finished device perches on top of the water meter and sends the current reading to HomeAssistant via MQTT without any permanent wiring or mounting.
Of course, the ESP8266 is not a platform we generally see performing optical character recognition. Some clever programming was required to get the Wemos D1 Mini Lite to reliably read the numbers from the meter without having to push the task to a more computationally powerful device such as a Raspberry Pi. The process starts with a 160×120 JPEG image provided by a VC0706 camera module, which is then processed with the JPEGDecoder library. The top and bottom of the image are discarded, and the center band is isolated into blocks that correspond with the position of each digit on the display.
Within each block, the code checks an array of predetermined points to see if the corresponding pixel is black or not. In theory this allows detecting all the digits between 0 and 9, though [Keilin] says there were still the occasional false readings due to inherent instabilities in the camera and mounting. But with a few iterations to the code and the aid of a Python testing program that allowed him to validate the impact of changes to the algorithm, he was able to greatly improve the detection accuracy. He says it also helps that the nature of the data allows for some basic sanity checks; for example the number only ever goes up, and only by a relatively small amount each time.
This method might not allow the per-second sampling required to pull off the impressive (if slightly creepy) water usage data mining we saw recently, but as long as you’re not after very high resolution data this is an elegant and creative way to pull useful data from your existing utility meter.
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22:00
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Hack a Day
When you hear the term “extension tube”, you probably think of something fairly long, right? But when [Loudifier] needed an extension tube to do extreme close-ups with a wide-angle lens on a Canon EF-M camera, it needed to be small…really small. The final 3D printed extension provides an adjustable length between 0 and 10 millimeters.
But it’s not just an extension tube, that would be too easy. According to [Loudifier], the ideal extension distance would be somewhere around 3 mm, but unfortunately the mounting bayonet for an EF-M lens is a little over 5 mm. To get around this, the extension tube also adapts to an EF/EF-S lens, which has a shorter mount and allows bringing it in closer than would be physically possible under otherwise.
[Loudifier] says the addition of electrical connections between the camera and the lens (for functions like auto focus) would be ideal, but the logistics of pulling that off are a bit daunting. For now, the most reasonable upgrades on the horizon are the addition of some colored dots on the outside to help align the camera, adapter, and lens. As the STLs and Fusion design file are released under the Creative Commons, perhaps the community will even take on the challenge of adapting it to other lens types.
For the polar opposite of this project, check out the 300 mm long 3D printed extension tube we covered a few weeks back that inspired [Loudifier] to send this project our way.
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8:30
»
Hack a Day
There is a treasure trove of history locked away in closets and attics, where old shoeboxes hold reels of movie film shot by amateur cinematographers. They captured children’s first steps, family vacations, and parties where [Uncle Bill] was getting up to his usual antics. Little of what was captured on thousands of miles of 8-mm and Super 8 film is consequential, but giving a family the means to see long lost loved ones again can be a powerful thing indeed.
That was the goal of [Anton Gutscher]’s automated 8-mm film scanner. Yes, commercial services exist that will digitize movies, slides, and snapshots, but where’s the challenge in that? And a challenge is what it ended up being. Aside from designing and printing something like 27 custom parts, [Anton] also had a custom PCB fabricated for the control electronics. Film handling is done with a stepper motor that moves one frame into the scanner at a time for scanning and cropping. An LCD display allows the archivist to move the cropping window around manually, and individual images are strung together with ffmpeg running on the embedded Raspberry Pi. There’s a brief clip of film from a 1976 trip to Singapore in the video below; we find the quality of the digitized film remarkably good.
Hats off to [Anton] for stepping up as the family historian with this build. We’ve seen ad hoc 8-mm digitizers before, but few this polished looking. We’ve also featured other archival attempts before, like this high-speed slide scanner.
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Hack a Day
When building robots, or indeed other complex mechanical systems, it’s often the case that more and more limit switches, light gates and sensors are amassed as the project evolves. Each addition brings more IO pin usage, cost, potentially new interfacing requirements and accompanying microcontrollers or ADCs. If you don’t have much electronics experience, that’s not ideal. With this in mind, for a Hackaday prize entry [rand3289] is working on FiberGrid, a clever shortcut for interfacing multiple sensors without complex hardware. It doesn’t completely solve the problems above, but it aims to be a cheap, foolproof way to easily add sensors with minimal hardware needed.

The idea is simple: make your sensors from light gates using fiber optics, feed the ends of the plastic fibers into a grid, then film the grid with a camera. After calibrating the software, built with OpenCV, you can “sample” the sensors through a neat abstraction layer. This approach is easier and cheaper than you might think and makes it very easy to add new sensors.
Naturally, it’s not fantastic for sample rates, unless you want to splash out on a fancy high-framerate camera, and even then you likely have to rely on an OS being able to process the frames in time. It’s also not very compact, but fortunately you can connect quite a few sensors to one camera – up to 216 in [rand3289]’s prototype.
Of course, this type of setup is mostly suited to binary sensors/switches where the light path is either blocked or not, but other uses can be devised. For example, rotation sensors made with polarising filters. We’ve even written about optical flex sensors before.
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Hack a Day
Filming in slow-motion has long become a standard feature on the higher end of the smartphone spectrum, and can turn the most trivial physical activity into a majestic action shot to share on social media. It also unveils some little wonders of nature that are otherwise hidden to our eyes: the formation of a lightning flash during a thunderstorm, a hummingbird flapping its wings, or an avocado reaching that perfect moment of ripeness. Altogether, it’s a fun way of recording videos, and as [Robert Elder] shows, something you can do with a few dollars worth of Raspberry Pi equipment at a whopping rate of 660 FPS, if you can live with some limitations.
Taking the classic 24 FPS, this will turn a one-second video into a nearly half-minute long slo-mo-fest. To achieve such a frame rate in the first place, [Robert] uses [Hermann-SW]’s modified version of raspiraw
to get raw image data straight from the camera sensor to the Pi’s memory, leaving all the heavy lifting of processing it into an actual video for after all the frames are retrieved. RAM size is of course one limiting factor for recording length, but memory bandwidth is the bigger problem, restricting the resolution to 64×640 pixels on the cheaper $6 camera model he uses. Yes, sixty-four pixels height — but hey, look at that super wide-screen aspect ratio!
While you won’t get the highest quality out of this, it’s still an exciting and inexpensive way to play around with slow motion. You can always step up your game though, and have a look at this DIY high-speed camera instead. And well, here’s one mounted on a lawnmower blade destroying anything but a printer.
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Hack a Day
The photographic hire company Lensrentals had a $2k Sony FE 135mm f1.8 GM camera lens returned with a problem: it was having issues focusing. So, they decided to do the obvious thing and take it apart. It’s a fascinating insight into some of the engineering that goes into a high-end camera lens.
That is perhaps a rather scary thing to do, because this is a very new lens that doesn’t even have a service manual yet. That’s akin to rechipping a Ferrari when you’ve never even opened the hood before.
One of the interesting things inside is the presence of a number of shims that adjust the placement between the groups of lens elements. It seems that however good their manufacturing tolerances are, sometimes you just have to put a shim or two in there to align things.

The focus motor moving back and forth. Lensrentals.com, 2019.
There is also a tantalizing glimpse of the focus mechanism, which slides one of the element groups back and forwards to focus the lens. And again, there are some manual adjustments that are made with screws to keep this group of lens elements aligned.
Unfortunately, Lensrentals didn’t go all-in with the teardown: they stopped when they found the problem, in which a single element had shifted, throwing off the performance of the entire lens. That’s a pity, as camera lenses are a major driver of miniature electric motor innovation, needing as they do to move large groups of elements quickly and very accurately to focus. There is an excellent view of the aperture element though, and it is possible to see how the lens uses twelve metal leaves to create an almost perfectly circular aperture.
This article is well worth a read if you would rather not tear apart your own expensive camera lenses.
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Hack a Day
Up until now, running any kind of computer vision system on the Raspberry Pi has been rather underwhelming, even with the addition of products such as the Movidius Neural Compute Stick. Looking to improve on the performance situation while still enjoying the benefits of the Raspberry Pi community, [Brandon] and his team have been working on Luxonis DepthAI. The project uses a carrier board to mate a Myriad X VPU and a suite of cameras to the Raspberry Pi Compute Module, and the performance gains so far have been very promising.
So how does it work? Twin grayscale cameras allow the system to perceive depth, or distance, which is used to produce a “heat map”; ideal for tasks such as obstacle avoidance. At the same time, the high-resolution color camera can be used for object detection and tracking. According to [Brandon], bypassing the Pi’s CPU and sending all processed data via USB gives a roughly 5x performance boost, enabling the full potential of the main Intel Myriad X chip to be unleashed.
For detecting standard objects like people or faces, it will be fairly easy to get up and running with software such as OpenVino, which is already quite mature on the Raspberry Pi. We’re curious about how the system will handle custom models, but no doubt [Brandon’s] team will help improve this situation for the future.
The project is very much in an active state of development, which is exactly what we’d expect for an entry into the 2019 Hackaday Prize. Right now the cameras aren’t necessarily ideal, for example the depth sensors are a bit too close together to be very effective, but the team is still fine tuning their hardware selection. Ultimately the goal is to make a device that helps bikers avoid dangerous collisions, and we’ve very interested to watch the project evolve.
The video after the break shows the stereoscopic heat map in action. The hand is displayed as a warm yellow as it’s relatively close compared to the blue background. We’ve covered the combination Raspberry Pi and the Movidius USB stick in the past, but the stereo vision performance improvements Luxonis DepthAI really takes it to another level.
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Hack a Day
If you’ve ever tried to take a picture of a fast moving object, you know how important timing is. You might only have one chance, and if you hit the shutter a bit too early or too late, the shot could be ruined. Past a certain point, no human camera operator can react quickly enough. Which is exactly why [Krzysztof Krześlak] created PiXPi.
In the past we’ve seen high-speed flashes designed to “freeze time” by illuminating the scene at the precise moment, and while PiXPi can technically do that, it also offers a few alternate methods of capturing that perfect moment. The idea here is to give the photographer the best chance of getting the shot they’re after by offering them as many tools as possible.
Essentially, PiXPi is a microcontroller that allows you to orchestrate your DSLR’s trigger, external flashes, and various other sensors and devices using an easy to use graphical programming interface from your smartphone. So for example, you could program the PiXPi to trigger your camera when it detected a loud enough noise.
But the device also allows you to be a bit more proactive. Rather than sitting back and waiting for a signal to fire off the camera, the PiXPi can directly take control of the action. As an example, [Krzysztof] has created an electronically triggered valve which can release a drop of liquid on command. Using PiXPi, the photographer can quickly put together a routine that triggers a drop, waits the few milliseconds it takes for it to hit the target, and then snaps a picture.
The goal of the 2019 Hackaday Prize is to develop a product fit for production, and naturally a huge part of that is having a well thought-out design. But if you’re ultimately looking to sell said product, it’s also very important to keep the needs of the end user in mind. To that end, we think [Krzysztof] has done a great job by not only making the system very flexible, but keeping it easy to use.
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Hack a Day
What do you do if you own an iconic and unusual camera from decades past? Do you love it and cherish it, buy small quantities of its expensive remanufactured film and take arty photographs? Or do you rip it apart and remake it as a modern-day digital camera in a retro enclosure? If you’re [Joshua Gross], you do the latter.
The Polaroid SX-70 is an iconic emblem of 1970s consumer technology chic. A true design classic, it’s a single-lens reflex design using a Polaroid instant film cartridge, and its party trick is that it’s a folding camera which collapses down to roughly the size of a pack of 1970s cigars. It was an expensive luxury camera when it was launched in 1972, and today it commands high prices as a collector’s item.
[Joshua]’s build is therefore likely to cause weeping and wailing and gnashing of teeth among vintage camera enthusiasts, but what exactly has he done? In the first instance, he’s performed a teardown of the SX-70 which should be of interest to many readers in itself. He’s removed the mirror and lens, mounted a Raspberry Pi camera behind the lens mount, and a small LCD monitor where the mirror would be.
A new plastic lens in the original lens housing completes the optics, and the electronics come courtesy of a Pi Zero, battery, and USB hub in the space where the Polaroid film cartridge would otherwise be. Some new graphics and a fresh leather cover complete the build, giving what we’d say is a very tidy electronic Polaroid. On the software side there is a filter to correct for fisheye distortion, and the final photos have a slightly Lomographic quality from the plastic lens.
We like what he’s created with his SX-70 even if we can’t help wincing that he did it to an SX-70 in the first place. Maybe it’s less controversial when someone gives the Pi treatment to a more mundane Polaroid camera.
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Hack a Day
The guitar ‘Toing’ sound from the ’70s was epic, and for the first time listener it was enough to get a bunch of people hooked to the likes of Aerosmith. Reverb units were all the rage back then, and for his DSP class project, [nebk] creates a reverb filter using Matlab and ports it to C++.
Digital reverb was introduced around the 1960s by Manfred Schroeder and Ben Logan. The system consists of essentially all pass filters that simply add a delay element to the input signal and by clubbing a bunch together and then feeding them to a mixer. The output is then that echoing ‘toing’ that made the ’80s love the guitar so much. [Nebk]’s take on it enlists the help of the Raspberry Pi and C++ to implement the very same thing.
In his writeup, [nebk] goes through the explaining the essentials of a filter implementation in the digital domain and how the cascaded delay units accumulate the delay to become a better sounding system. He also goes on to add an FIR low pass filter to cut off the ringing which was consequent of adding a feedback loop. [nebk] uses Matlab’s filter generation tool for the LP filter which he includes the code for. After testing the design in Simulink, he moves to writing the whole thing in C++ complete with the filter classes that allows reading of audio files and then spitting out ‘reverbed’ audio files out.
The best thing about this project is the fact that [nebk] creates filter class templates for others to play with. It allows those who are playing/working with Matlab to transition to the C++ side with a learning curve that is not as steep as the Himalayas. The project has a lot to learn from and is great for beginners to get their feet wet. The code is available on [GitHub] for those who want to give it a shot and if you are just interested in audio effects on the cheap, be sure to check out the Ikea Reverb Plate that is big and looks awesome.
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Hack a Day
There’s a piece of tech that many of us own, but very few of us have dissected. This is strange, given our community’s propensity for wielding the screwdriver, but how many of you have taken apart a camera lens. Even though many of us have a decent camera, almost none of us will have taken a lens to pieces because let’s face it, camera lenses are expensive!
[Anthony Kouttron] has taken that particular plunge though, because in cleaning his Olympus lens he tore its internal ribbon cable from the camera connector to the PCB. Modern lenses are not merely optics in a metal tube, their autofocus systems are masterpieces of miniaturised electronics that penetrate the entire assembly.
In normal circumstances this would turn the lens from a valued photographic accessory into so much junk, but his solution was to take the bold path of re-creating the torn cable in KiCad and have it made as a flexible PCB, and to carefully solder it back on to both connector and autofocus PCB. We applaud both the quality of his work, and thank him for the unusual glimpse into a modern lens system.
Lens repairs may be thin on the ground here, but we’ve had another in 2015 with this Nikon aperture fix.
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Hack a Day
If you want to take a long exposure photograph, you need a tripod to hold your camera steady. But a tripod won’t help when the ground it’s standing on is moving. That’s exactly the problem [Emvilza] ran into when he wanted to take minutes or hours long photographs of the night sky. His solution was to build a barn door tracker, which he carefully documented in both English and Spanish.
Barn door trackers, also known as scotch mounts have been used by photographers for many years to cancel out the rotation of the earth. This causes stars to appear frozen in the sky and allows for photographs of very dim celestial objects. These trackers range from simple hand-cranked affairs to complex mechanical creations. [Emvilza] decided to have a go at designing and building his own tracker, using only basic tools, as he didn’t have access to a CNC or 3D printer.
The tracker itself is built from wood, with metal hardware. [Emvilza] spent a ton of time designing the tracker using SketchUp. The carefully drawn plans ensured everything would fit together and operate correctly.
One of the toughest parts was accurately bending a threaded rod enough to make it work with the tracker, but not bind the drive system. The mount’s motion comes from a threaded rod. The rod is driven by a stepper motor. Control and sensing is handled by an ATmega328 programmed using the Arduino toolchain. [Emvilza] learned Eagle and designed a PCB. Rather than etch a board, he simply built the circuit on perfboard, following his layout and traces.
The end result is a tracker that looks and performs great — just check out the images on [Emvilza’s] site to see some examples. Not only that, [Emvilza’s] well written documentation will help anyone looking to build a tracker in the future!
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Hack a Day
Photographic slides were popular in the middle part of the 20th century, but are long forgotten now. If you’ve found a handful in a dusty attic, you might consider sending them away to be digitized professionally, or using a flatbed scanner at home. [Bryan Howard] found himself with over 200,000 slides, however, so that just wouldn’t do. Instead, he endeavored to build an automated scanner of his own.
Like many similar projects, [Bryan] started with an existing slide projector as a base. This means that all the difficult work of slide transport is already taken care of. The projector has then been upgraded with an LED light source and other tweaks befitting its new role. An Arduino Pro Micro runs the show, firing off the camera to image each slide before loading the next one into place. The DSLR responsible for imaging is then hooked up to a PC so the incoming images can be checked while the machine is in operation.
Preliminary tests are promising, with the scanner successfully capturing several slides in a row. [Bryan] estimates that, with a capture time of between 1 and 2 seconds per slide, it should take somewhere between 2-5 days to image the entire collection.
We wish [Bryan] the best of luck with the project, and look forward to seeing the final results. We’ve seen similar work before, too. Video after the break.
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Hack a Day
There are times when being seen to listen to music through headphones might get you into trouble. For these moments, reach for a handy solution: bone conduction speakers that discreetly pipe the music to your eardrums through the bone of your skull. [Samuel] wanted just such a covert music listening device, so created his own in a set of 3D-printed glasses.
He first tried using an Adafruit bone-conducting transducer but found that to be too bulky. What you see here is a smaller module that [Samuel] found on AliExpress (search for bone conduction module). The GD-02 is much smaller and thus more suitable for hiding in the arm of a pair of glasses. For the rest of the electronics he used a PCB and battery from a donated set of broken Bluetooth headphones, a space for which he was able to conceal easily in the 3D-printed frame of the glasses. The battery is in one arm and the board in the other, and he says the wiring was extremely fiddly.

The result is a surprisingly svelte set of specs that you might not immediately think concealed some electronics. His choice of bright yellow filament might give the game away, but overall he’s done a great job. This certainly isn’t the first bone conduction project we’ve shown you, some of the others have used motors instead of bone conduction transducers.
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Hack a Day
Streaming music may now come from somewhere in the cloud to an app on your phone and be sent to the client built in to almost every entertainment device you own, but there was a time when the bleeding edge lay in dedicated streaming device that connected to your existing …read more
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Hack a Day
The Compact Disc is 40 years old, and for those of us who remember its introduction it still has that sparkle of a high-tech item even as it slides into oblivion at the hands of streaming music services.
If we could define a moment at which consumers moved from analogue …read more
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Hack a Day
Blowing bubbles is a pastime enjoyed by young and old alike. The pleasant motion and swirling colors of the bubbles can be remarkably relaxing. With the right tools and techniques, it’s possible to take striking photos of these soap film phenomena, and that’s exactly what [Eric] and [Travis] did.
After …read more
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Hack a Day
For those with 3D printers, taking a 3D model and spitting out a physical object is so routine as to be blasé. The reverse is something a little different. There are many ways to create a digital 3D model of a physical object, of varying complexity. [Eric Strebel] favors photogrammetry, …read more
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Hack a Day
The Instax SQ6 and Fujifilm’s entire range of instant cameras are fun little boxes that produce instant photos. It’s a polaroid that’s not Polaroid, and like most instant cameras, the lenses are just one or two pieces of plastic. A lens transplant is in order, and that’s exactly what [Kevin] …read more
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Hack a Day
If you need help visualizing magnetic fields, these slow-motion video captures should educate or captivate you. Flux lines are difficult to describe in words, because magnet shape and strength play a part. It might thus be difficult to visualize what is happening with a conical magnet, for a person used …read more
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Hack a Day
When it comes to audio, the number of speakers you want is usually governed by the number of tracks or channels your signal has. One for mono, two for stereo, four for quadrophonic, five or more for surround sound and so on. But all of those speakers are essentially playing different tracks from a “single” audio signal. What if you wanted a single audio device to play eight different songs simultaneously, with each song being piped to its own speaker? That’s the job [Devon Bray] was tasked with by interdisciplinary artist [Sara Dittrich] for one of her “Giant Talking Ear” …read more
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Hack a Day
What if I told you that you can get rid of your headphones and still listen to music privately, just by shooting lasers at your ears?
The trick here is something called the photoacoustic effect. When certain materials absorb light — or any electromagnetic radiation — that is either pulsed or modulated in intensity, the material will give off a sound. Sometimes not much of a sound, but a sound. This effect is useful for spectroscopy, biomedical imaging, and the study of photosynthesis. MIT researchers are using this effect to beam sound directly into people’s ears. It could lead to …read more
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Hack a Day
We (and by extension, you) have seen the Raspberry Pi crammed into nearly every piece of gear imaginable. Putting one inside a game console is to popular it’s bordering on a meme, and putting them into old stereos and other pieces of consumer electronics isn’t far behind. It’s always interesting to see how hackers graft the modern Raspberry Pi into the original hardware, but we’ll admit it can get a bit repetitive. So how about somebody scratch building an enclosure for their jukebox project?
[ComfortablyNumb] took the road less traveled when he created this very nice wooden Raspberry Pi enclosure …read more
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Hack a Day
From cars to refrigerators, it seems as if every new piece of tech is connected to the Internet. For better or for worse, we’re deep into the “Internet of Things”. But what about your camera? No, not the camera in your smartphone; that one’s already connected to the Internet and selling your secrets to the highest bidder. Don’t you think your trusty DSLR could be improved by an infusion of Wide Area Networking?
Regardless of what you’re answer to that question might be, [Thomas Kittredge] decided his life would be improved by making his beloved Canon EOS Rebel T6 an …read more
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Hack a Day
Do you have a need to photographically document the doings of warm-blooded animals? If so, a game camera from the nearest hunting supplier is probably your best bet. But if you don’t need the value-added features such as a weather-resistant housing that can be chained to a tree, this DIY motion trigger for a DSLR is a quick and easy build, and probably loads more fun.
The BOM on [Jeremy S Cook]’s build is extremely short – just a PIR sensor and an optoisolator, with a battery, a plug for the camera’s remote jack, and a 3D-printed bracket. The PIR …read more
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Hack a Day
It seems a reasonable assumption that anyone who’d be willing to spend a few hundred dollars on a pair of headphones is probably the type of person who has a passion for high quality audio. That, or they work for the government. We’re fairly sure [Daniel Harari] falls into that former category though, given how much thought he gave to adding a decent microphone to his Sennheiser HD650 headphones.
Not happy with the results he got from microphones clipped to his shirt or mounted on a stand, [Daniel] realized what he really wanted was a sensitive boom microphone. This would …read more
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Hack a Day
We are all familiar with the idea of a hologram, either from the monochromatic laser holographic images you’ll find on your bank card or from fictional depictions such as Princes Leia’s distress message from Star Wars. And we’ve probably read about how the laser holograms work with a split beam of coherent light recombined to fall upon a photographic plate. They require no special glasses or headsets and possess both stereoscopic and spatial 3D rendering, in that you can view both the 3D Princess Leia and your bank’s logo or whatever is on your card as 3D objects from …read more
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Hack a Day
[Enginoor] is on a quest. He wants to get into the world of 3D printing, but isn’t content to run off little toys and trinkets. If he’s going to print something, he wants it to be something practical and ideally be something he couldn’t have made quickly and easily with more traditional methods. Accordingly, he’s come out the gate with a fairly strong showing: a magnetic Maxwell kinematic coupling camera mount.
If you only recognized some of those terms, don’t feel bad. Named for its creator James Clerk Maxwell who came up with the design in 1871, the Maxwell kinematic …read more
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Hack a Day
If a camera that combines the immediate gratification of a Polaroid with cloud hosting sounds like something that tickles your fancy, look no farther than this ESP-powered point and shoot camera created by [Martin Fasani]. There’s no screen or complicated configuration on this camera; just press the button and the raw picture pops up on the online gallery. Somehow it’s simultaneously one of the most simplistic and complex implementations of the classic “instant camera” concept, and we love it.
The electronics in the camera itself, which [Martin] calls the FS2, is quite simple. At the core, it’s nothing more than …read more
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Hack a Day
The first photograph was taken sometime in the early 1800s, and through almost two centuries of development we’ve advanced through black-and-white, the video camera, and even high-speed cameras that can take thousands of frames per second. [Mathieu Stern] took a step back from all of the technological progress of the past two hundred years, though, and found a lens for his camera hidden in the glacial ice of Iceland.
Ice in this part of the world has been purified over the course of 10,000 years, and [Mathieu] realized that with this purity the ice could be formed into a workable …read more
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Hack a Day
There was a time when any hi-fi worth its salt had a little row of sliders on its front panel, a graphic equalizer. On a hi-fi these arrays of variable gain notch filters were little more than a fancy version of a tone control, but in professional audio and PA systems they are used with many more bands to precisely equalise a venue and remove any unwanted resonances.
On modern hi-fi the task is performed in software, but [Grant Giesbrecht] wanted an analogue equalizer more in the scheme of those fancy tone controls than the professional devices. His …read more
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Hack a Day
A stereo setup assumes that the listener is physically located between the speakers, that’s how it can deliver sound equally from both sides. It’s also why the receiver has a “Balance” adjustment, so the listener can virtually move the center point of the audio by changing the relative volume of the speakers. You should set your speaker balance so that your normal sitting location is centered, but of course you might not always be in that same position every time you listen to music or watch something.
[Vije Miller] writes in with his unique solution to the problem of the …read more
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Hack a Day
A normal camera uses a lens to bend light so that it hits a sensor. A pinhole camera doesn’t have a lens, but the tiny hole serves the same function. Now two researchers from the University of Utah. have used software to recreate images from scattered unfocused light. The quality isn’t great, but there’s no lens — not even a pinhole — involved. You can see a video, below.
The camera has a sensor on the edge of a piece of a transparent window. The images could resolve .1 line-pairs/mm at a distance of 150 mm and had a depth …read more
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Hack a Day
With all due respect to the hackers and makers out there that provide us with all these awesome projects to salivate over, a good deal of them tend to prioritize functionality over aesthetics. Which isn’t a bad thing necessarily, and arguably better than the alternative. But for many people there’s a certain connotation around DIY, an impression that the final product is often a little rough around the edges. It’s usually cheaper, maybe even objectively better, but rarely more attractive.
Which makes builds like this absolutely beautiful 3D printed Bluetooth speaker by [Ahmsville] especially impressive. Not only did he engineer …read more
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Hack a Day
Sometimes a mix of old and new is better than either the old or new alone. That’s what [Brad Carter] learned when he was given an old 1990s sound board with a noisy SCSI drive in it. In case you don’t know what a sound board is, think of a bunch of buttons laid out in front of you, each of which plays a different sound effect. It’s one way that radio DJ’s and podcasters intersperse their patter with doorbells and car crash sounds.
Before getting the sound board, [Brad] used a modern touchscreen table but it wasn’t responsive enough …read more
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Hack a Day
Once relegated to the proverbial Linux loving Firefox user, ad blocking has moved into public view among increased awareness of privacy and the mechanisms of advertising on the internet. At the annual family gathering, when That Relative asks how to setup their new laptop, we struggle through a dissertation on the value of ad blockers and convince them to install one. But what about mediums besides the internet? Decades ago Tivo gave us one button to jump through recorded TV. How about the radio? If available, satellite radio may be free of The Hated Advertisement. But terrestrial radio and online …read more
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Hack a Day
We live in a time in which taking pictures is preposterously easy: take out your phone (assuming it wasn’t already in your hands), point it at something, and tap the screen. The camera hardware and software in even basic smartphones today is good enough that you don’t need to give it much more thought than that to get decent pictures. But what if you want to do better than just decent?
Ideally you’d take photos lit by high temperature lights, but failing that, you might need to compensate by adjusting the white balance during post-processing. But to accurately adjust white …read more
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Even though it’s now a forgotten afterthought in the history of broadcasting technology, we often forget how innovative the TiVo was. All this set-top box did was connect a hard drive to a cable box, but the power was incredible: you could pause live TV. You could record shows. You could rewind TV. It was an incredible capability, that no one had ever seen before. Of course, between Amazon and Netflix and YouTube, no one watches TV anymore, and all those platforms have a pause button, but the TiVO was awesome.
There is one bit of broadcasting that still exists. …read more
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Hack a Day
Ultrasonic phased arrays are one of the wonders of the moment, with videos of small items being levitated by them shared far and wide. We’ve all seen them and some of us have even wondered about building them, but what about the practical considerations? Just how would you drive a large array of ultrasonic transducers, and how would you maintain a consistent phase relationship between their outputs? It’s a problem [Niklas Fauth] has been grappling with over the three iterations so far of his ultrasonic phased array project, and you can follow his progress on the latest build.
The arrays …read more
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Hack a Day
We are surrounded by sensors for all forms of environmental measurement, and a casual browse through an electronics catalogue can see an experimenter tooled up with the whole array for a relatively small outlay. When the environment in question is not the still air of your bench but the turbulence, sand, grit, and mud of a sea floor, that pile of sensors becomes rather useless. [Ellie T] has been addressing this problem as part of the study of hypoxia in marine life, and part of her solution is to create an underwater camera by encasing a Raspberry Pi Zero W …read more
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Hack a Day
Technology vanishes. It either succeeds and becomes ubiquitous or fails. For example, there was a time when networking and multimedia were computer buzzwords. Now they are just how computers work. On the other hand, when was the last time you thought about using a CueCat barcode reader to scan an advertisement? Then there are the things that have their time and vanish, like pagers. It is hard to decide which category digital cameras fall into. They are being absorbed into our phones and disappearing as a separate category for most consumers. But have you ever wondered about the first digital …read more
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Hack a Day
Given its appearance in one form or another in all but the cheapest audio gear produced in the last 70 years or so, you’d be forgiven for thinking that the ubiquitous VU meter is just one of those electronic add-ons that’s more a result of marketing than engineering. After all, the seemingly arbitrary scale and the vague “volume units” label makes it seem like something a manufacturer would slap on a device just to make it look good. And while that no doubt happens, it turns out that the concept of a VU meter and its execution has some serious …read more
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Hack a Day
Most of us, if we have bought a single board computer with the capability to support a camera, will have succumbed to temptation and shelled out for that peripheral in the hope that we can coax our new toy into having sight. We’ll have played with the command line tool and taken a few random images of our bench, but then what? There is so much possibility in a camera that our colleague [Steven Dufresne] wanted to explore with his Raspberry Pi, so he built a motorised eyeball mount with which to do so.
Pan & tilt mounts using RC …read more
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Hack a Day
Sound eXchange, or SoX, the “Swiss Army knife of audio manipulation” has been around for as long as the Linux kernel, and in case you’re not familiar with it, is a command line tool to play, record, edit, generate, and process audio files. [porkostomus] was especially interested about the generating part, and wrote a little shell script that utilizes SoX’s built-in synthesizer to compose 8-bit style music.
The script comes with a simple yet straightforward user interface to record the lead and bass parts into a text file, and play them back later on. Notes from C2 to C5 are …read more
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Hack a Day
Many of us have aspirations of owning a tube amp. Regardless of the debate on whether or not tube audio is nicer to listen to, or even if you can hear the difference at all, they’re gorgeous to look at. However, the price of buying one to find out if it floats your boat is often too high to justify a purchase.
[The Post Apocalyptic Inventor] has built a stereo tube amplifier in the style of the Fallout video games. The idea came when he realised that the TK 125 tape recorder manufactured by Grundig was still using tube audio …read more
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Hack a Day
A few summers of my misspent youth found me working at an outdoor concert venue on the local crew. The local crew helps the show’s technicians — don’t call them roadies; they hate that — put up the show. You unpack the trucks, put up the lights, fly the sound system, help run the show, and put it all back in the trucks at the end. It was grueling work, but a lot of fun, and I got to meet people with names like “Mister Dog Vomit.”
One of the things I most remember about the load-in process was running …read more
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Hack a Day
There’s a lot of fun to be had in modernizing an old boombox but what about turning one of those ubiquitous shelf speakers into a portable boombox, complete with a handle for carrying? That’s what [GreatScott] did when a friend gave him a just such a shelf speaker.
These days you’d very likely use your phone as the audio source so he included a 20 watt stereo class D amplifier which could be disconnected at the throw of a switch if not needed. To power the amplifier he used 16 18650 lithium-ion batteries which were leftover from previous projects. He …read more
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Hack a Day
There’s a school of thought that says complexity has an inversely proportional relation to reliability. In other words, the smarter you try to make something, the more likely it is to end up failing for a dumb reason. As a totally random example: you’re trying to write up a post for a popular hacking blog, all the while yelling repeatedly for your Echo Dot to turn on the fan sitting three feet away from you. It’s plugged into a WeMo Smart Plug, so you can’t even reach over and turn it on manually. You just keep repeating the same thing …read more
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Hack a Day
[KaZjjW] wanted to retrofit a pair of nicely styled vintage headphones to be able to play wirelessly over Bluetooth. In principle this is an easy task: simply stick a Bluetooth audio receiver on the line-in, add a battery, and you’re all set. However, [KaZjjW] wanted to keep the aesthetic changes to the headphones at an absolute minimum, retaining the existing casing and volume control, whilst cramming the electronics entirely inside and out of sight.
With the inherent space constraints inside the cups of the headphones, this proved to be quite a challenge. The existing volume potentiometer which hung half outside …read more
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Hack a Day
Readers with long memories will remember the days when mice and other similar pointing devices relied upon a hard rubber ball in contact with your desk or other surface, that transmitted any motion to a pair of toothed-wheel rotation sensors. Since the later half of the 1990s though, your rodent has been ever significantly more likely to rely upon an optical sensor taking the form of a small CCD camera connected to motion sensing electronics. These cameras are intriguing components with applications outside pointing devices, as is shown by [FoxIS] who has used one for robot vision.
The robot in …read more
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Hack a Day
Camera sliders are a popular build, and properly executed they can make for impressive shots for both time-lapse sequences or real-time action. But they seem best suited for long shots, as dollying a camera in a straight line just moves subjects close to the camera through the frame.
This slider with both pan and tilt axes can make moving close-ups a lot easier. With his extremely detailed build log, [Dejan Nedalkovski] shows how he went about building his with only the simplest of materials and tools. The linear rail is simply a couple of pieces of copper pipe supported by …read more
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Hack a Day
Have you ever seen something and instantly knew it was something you wanted, even though you weren’t aware it existed a few seconds ago? That’s how we felt when we received a tip about Zynthian, a fully open source (hardware and software) synthesizer. You can buy the kit online directly from the developers, or build your own from scratch using their documentation and source code. With a multitude of filters, effects, engines, and essentially unlimited upgrade potential, they’re calling it a “Swiss Army Knife of Synthesis”. We’re inclined to agree.
At the most basic level, the Zynthian is a Raspberry …read more
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Hack a Day
Thermal cameras hold an enduring fascination as well as being a useful tool for the engineer. After all, who wouldn’t want to point one at random things around the bench, laughing with glee at finding things warmer or colder than expected? But they’ve always been so expensive, and a lot of the efforts that have sought to provide one for little outlay have been rather disappointing.
This has not deterred [Offer] though, who has made an extremely professional-looking thermal camera using an M5Stack ESP32-based computer module and an AMG8833 thermal sensor array module in a 3D-printed case that copies …read more
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Hack a Day
As the cost of high-resolution images sensors gets lower, and the availability of small and cheap single board computers skyrockets, we are starting to see more astrophotography projects than ever before. When you can put a $5 Raspberry Pi Zero and a decent webcam outside in a box to take autonomous pictures of the sky all night, why not give it a shot? But in doing so, many hackers are recognizing a fact well-known to traditional telescope jockeys: seeing a few stars is easy, seeing a lot of stars is another story entirely.
The problem is that stars are fairly …read more
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Hack a Day
People with dementia have trouble with some of the things we take for granted, including dressing themselves. It can be a remarkably difficult task involving skills like balance, pattern recognition inside of other patterns, ordering, gross motor skill, and dexterity to name a few. Just because something is common, doesn’t mean it is easy. The good folks at NYU Rory Meyers College of Nursing, Arizona State University, and MGH Institute of Health Professions talked with a caregiver focus group to find a way for patients to regain their privacy and replace frustration with independence.
Although this is in the context …read more
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Hack a Day
Proving that astrophotography doesn’t have to break the bank, [Gerald Gattringer] has recently documented his DIY “barn door” style star tracker which is built almost entirely from scratch. Short of the Arduino and stepper motor, all the components were either made by hand or are standard hardware store finds.
The build starts with three aluminum plates which [Gerald] cut by hand with an angle grinder. He then drilled all the necessary screw holes and a rectangular opening for the threaded rod to pass through. He even used epoxy to mount a nut to the bottom plate which would eventually attach …read more
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Hack a Day
Sometimes, less is more. Sometimes, more is more. There is a type of person who believes that if enough photos of the same subject are taken, one of them will shine above the rest as a gleaming example of what is possible with a phone camera and a steady hand. Other people know how to frame a picture before hitting the shutter button. In some cases, the best method may be snapping a handful of photos to get one good one, not by chance, but by design.
[The Thought Emporium]’s video, also below the break, is about getting crisp pictures …read more
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Hack a Day
[Marco Reps] found an HT02 thermal imaging camera in his mailbox. He found the resolution was fine for looking at big objects but worthless for examining circuit boards. So he decided to just tear it into pieces — an urge we totally understand.
Inside was a thermopile sensor that was easy to reverse engineer. So [Marco] decided to rework a Raspberry Pi robot to use the camera and turn it into a heat seeker.
The camera is relatively inexpensive compared to other similar devices and apparently uses a cheaper sensor type. However, the sensor itself was easy to use. [Marco] …read more
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Hack a Day
Should a camera build start with a sand mold and molten aluminum? That’s the route [CroppedCamera] took with this thoroughly impressive camera project.
When we think of cameras these days, chances are we picture the ones that live inside the phones in our pockets. They’re the go-to image capture devices for most of us, but even for the more photographically advanced among us, when a more capable camera is called for, it’s usually an off-the-shelf DSLR from Canon, Nikon, or the like. Where do hand-built cameras fall in today’s photography world? They’re a great way to add a film option …read more
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Hack a Day
We’ve all gone through it. You buy a kit or even an assembled consumer item, and it’s either not quite right or it’s only a part of what you need. Either you do a fix, or you add to it. In [Jeremy S. Cook’s] case, he’d been working for a while with a camera slider kit which came with just the slider. He’d added a motor and limit switches but turning it on/off and reversing direction were still done by manipulating alligator clips. Now he’s put together some far better, and more professional-looking controls.
He started by replacing the DC …read more
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Hack a Day
Thermal imaging cameras, cameras able to measure the temperature of an object while taking a picture, are amazingly expensive. For the price of a new car, you can pick up one of these infrared cameras and check out where the drafts are in your house. [Max Justicz] thought he could do better than even professional-level thermal [...]
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Hack a Day
This delightful marketing ploy requires the listener to fabricate their own record out of ice. The band Shout Out Louds wanted to make a splash with their newest single. So they figured out how to make a playable record out of ice. The main problem with this is the grooves start to degrade immediately when [...]
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Hack a Day
[Bogdan] received this set of Serioux Panda speakers as a gift. I turns out that they sound very good and he decided to make them more useful to him by converting them to work as Bluetooth speakers. To begin with he bought the cheapest A2DP device he could find. This is the protocol that identifies [...]
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Hack a Day
[Jacken] loves his lossless audio and because of that he’s long been a fan of Squeezebox. It makes streaming the high-bitrate files possible. But after Logitech acquired the company he feels they’ve made some choices which has driven the platform into the ground. But there is hope. He figured out how to use a Raspberry [...]
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Hack a Day
[Michael] wanted a stereo that he could use outside, be it at the beach, beside the pool, or while tailgating. He decided to build this boom box himself, and didn’t cut any corners when it came to a professional looking finish. Because of the locale in which he plans to use the stereo he went [...]
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Hack a Day
[Reza] continues his work with the remote control protocol for a Touch Tunes Jukebox. This time around he had a universal remote PCB fabricated and wrote code to skip to the next track. Regular readers will remember that he started by making an Arduino transmit all possible remote codes to give him free credits. This [...]
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Hack a Day
Here’s two photographic takes on the same subject, each with a different depth of focus. [Chaos Collective] came up with a way to make interactive still images that allow a user to adjust the depth of focus by clicking on different objects in the image. This was inspired by the Lytro camera which uses an array [...]
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Hack a Day
This Digital IR Theremin creates tones based on the distance of an object from its IR sensor. There’s no microcontroller here, since the project is part of an Introduction to Digital Electronics course. Instead, it uses a handful of comparators, transistors, AND gates, and a 555 timer to make noise. The comparators are connected to create [...]
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Hack a Day
Not since the great jukebox war of 2007 has anyone been as dangerous as a drunken friend with a wallet full of one dollar bills. Now whenever [Reza] goes out to the pub, he can play tracks on the TouchTune jukebox for free. TouchTune jukeboxes are basically a computer with a touch screen monitor connected [...]
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Hack a Day
[Florian Amrhein] made use of some old hardware to build his own internet radio in a 1930′s radio case. The original hardware is a tube-amplified radio which he picked up on eBay. There’s tons of room in there once he removed the original electronics and that’s a good thing because he crammed a lot of [...]
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Hack a Day
Seriously, nothing says ‘Look at me!’ like these headphones. [Yardley Dobon] added a rainbow of colored electroluminescent wire to his headphones and made them pulse to the music. The video after the break shows the headphones bumping to the tunes. This is one of two versions of the project, the other runs the EL wire [...]
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Hack a Day
Needless to say, there’s a world of difference between the expensive DSLR cameras professional photographers use and the point-and-shoot models carried by commoners. One such difference is the ability to use slave flashes – a second flash set off to the side of the subject for better illumination. Most of these slave flash units are [...]
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Hack a Day
Here are two different briefcase speaker projects. [Dale] built the offering on the right back in high school and the upgraded version 2.0 more recently. He was inspired to send in a tip for the projects after seeing yesterday’s suitcase full of tunes. The first version uses a pair of speakers pulled out of a [...]
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Hack a Day
[Texane] picked up a 2.4 GHz transmitter/receiver pair for transmitting sensor data wirelessly. After using them in a project he wanted to try pushing them a bit to see what the limits are when it comes to higher bandwidths. He ended up building a wireless speaker that transmits audio at about 90 KB/s. That link [...]
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Hack a Day
Take the party with you by building your own boomcase. It’s an amplifier and set of speakers built into luggage. It uses an audio jack to connect to your favorite music player, and with a bit of added protection — like grills for those speakers — it could still be gently used to transport your [...]
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Hack a Day
What do you do when you have a microcontroller you’re trying to optimize? One method is using a debugger, but for AVRs and such that’s not a very common technique. For lower-level electronics projects, it’s nearly impossible, even. [Cnlohr] built a small Minecraft server that listens to in-game redstone circuits, but the performance of his real-world [...]
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Hack a Day
Last week we saw [Todd]‘s solution to getting a tripod out-of-the-way when filming a few DIY videos. It’s an overhead camera gantry that allows him to move a camera around his garage workshop without a tripod getting in the way. This weekend, he’s back with a new and improved version. It’s a vast improvement over [...]
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Hack a Day
[Alex] just bought a really nice TEAC VR-20 audio recorder, a very capable recorder perfect for recording your thoughts or just making concert bootlegs. This model was recently replaced by the Tascam DR-08 audio recorder. It’s essentially the same thing, but the Tascam unit can record at 96kHz, whereas the TEAC can only record at [...]
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Hack a Day
Here’s a pretty tricky piece of consumer electronics reverse engineering. [Joe Fitz] came across the Nikon WU-1a. It’s a dongle that plugs into a Nikon D3200 camera, producing a WiFi connection which can be picked up and controlled from a smart phone. The app shows you the current image from the viewfinder, allows you to [...]
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Hack a Day
For as many garage and workshop videos we feature here on Hackaday, we’re surprised we haven’t seen this sooner. [Todd] makes a bunch of videos in his garage shop, but using a tripod is a pain; he’s always tripping over his camera setup and it is just generally in the way all the time. His solution was [...]
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Hack a Day
This VU meter uses Nixie tubes as the display. There are a total of fourteen IN-13 bar graph tubes that map out the audio spectrum. The build uses purely hardware for the display; no microcontroller processing, or dedicated VU-meter chips were used. Input begins with a dual Op-Amp along with a pair of potentiometers which [...]
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Hack a Day
[Michael Clemens] was looking for gifts for his Grandmother’s 90th Birthday. She is visually impaired and loves to be able to listen to audiobooks. The problem is that she doesn’t really get the hang of using electronics. He made things easy by building her a one-button audiobook player. The Raspberry Pi board is a perfect [...]
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Hack a Day
[Gregory Charvat] decided to see what he could do with this old Police radar gun. It is an X-band device that broadcasts continuous waves and measures the Doppler shift as they echo back. He cracked it open to see if he could interface the output with a computer. After a little poking around he’s able to get [...]
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Hack a Day
Believe it or not, this VK5JST aerial analyzer kit is going to rickroll you. [Erich] wanted to see if he could use the device in a different way. His adventure led him to use it to feed different tones to an AM radio, producing the all too familiar [Rick Astley] offering. There’s a fair bit of math that [...]
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Hack a Day
[Derek] likes to get a little bit of drivers-eye footage when racing his motorcycle, but there’s an inherent problem with mounting a camera to a moving and tilting platform. When he leans into turns, the camera can’t keep the horizon level. Cinematography and electronics go well together. so [Derek] built a horizon-stabilized camera mount for motorcycle videography. The [...]
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Hack a Day
Don’t get us wrong, we drive very carefully as it’s the most dangerous thing we do on a regular basis. But even a careful driver can get caught by bad traffic and a red light camera. These are devices that monitor intersections. If you get caught in the middle when the light goes red they [...]
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Hack a Day
We never use the flash on our point-and-shoot. It has a way of washing out every image we take. But [Joey] has a different solution to the problem. He shows us how to make a papercraft flash reflector that will still light up your subject without washing out everything in the foreground. [Joey] is perfectly [...]
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Hack a Day
[Tynan] loves his Sony NEX-5 camera but he’s fed up with not being able to choose any external microphone when recording video. Recently he set out to remedy that, and managed to add an audio in jack without modify the camera itself. The real trick here is to modify how a microphone accessory connects to [...]
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Hack a Day
Parabolic microphones are used to listen in from a distance. You see them on the sidelines of NFL football games, but they’re part of the standard issue in detective and spy novels. Now you can build your own parabolic microphone by following this example. The one component that may be hard to find is the [...]
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Hack a Day
This anime character is dancing to the music thanks to some animatronic tricks which [Scott Harden] put together. She dances perfectly, exhibiting different arm and head movements at just the right time. The secret to the synchronization is actually in the right channel of the audio being played. The character in question is from an [...]
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SecDocs
Authors:
Max Kilger Tags:
identity management Event:
Chaos Communication Congress 22th (22C3) 2005 Abstract: The demarcation line that used to separate your digital identity from your real world physical identity is rapidly disappearing. More seriously, it is permanently changing the way in which the world sees you and you see yourself. Social identity lies at the very core of our existence as human beings. Without identity we are lost both in the physical and virtual world. Before the coming of the digital revolution, most people struggled to create a single, permanent identity that stayed with them for the remainder of their lives. Digital technology has changed that way of life forever. People are now given digital identities by governmental, business and military organizations, sometimes with their knowledge but often without them knowing. People have also begun to weave multiple digital identities for themselves - using digital technology they can now create their own alternative identities that they can wear and shed like skins for their own personal purposes. In this lecture I will discuss how the digital identities that we create for ourselves and those that others create or us affect both our image of ourselves, our own psychological makeup and well-being as well as how it affects how others see and deal with us.
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21:45
»
SecDocs
Authors:
Max Kilger Tags:
identity management Event:
Chaos Communication Congress 22th (22C3) 2005 Abstract: The demarcation line that used to separate your digital identity from your real world physical identity is rapidly disappearing. More seriously, it is permanently changing the way in which the world sees you and you see yourself. Social identity lies at the very core of our existence as human beings. Without identity we are lost both in the physical and virtual world. Before the coming of the digital revolution, most people struggled to create a single, permanent identity that stayed with them for the remainder of their lives. Digital technology has changed that way of life forever. People are now given digital identities by governmental, business and military organizations, sometimes with their knowledge but often without them knowing. People have also begun to weave multiple digital identities for themselves - using digital technology they can now create their own alternative identities that they can wear and shed like skins for their own personal purposes. In this lecture I will discuss how the digital identities that we create for ourselves and those that others create or us affect both our image of ourselves, our own psychological makeup and well-being as well as how it affects how others see and deal with us.
-
15:24
»
SecDocs
Authors:
Max Kilger Tags:
identity management Event:
Chaos Communication Congress 22th (22C3) 2005 Abstract: The demarcation line that used to separate your digital identity from your real world physical identity is rapidly disappearing. More seriously, it is permanently changing the way in which the world sees you and you see yourself. Social identity lies at the very core of our existence as human beings. Without identity we are lost both in the physical and virtual world. Before the coming of the digital revolution, most people struggled to create a single, permanent identity that stayed with them for the remainder of their lives. Digital technology has changed that way of life forever. People are now given digital identities by governmental, business and military organizations, sometimes with their knowledge but often without them knowing. People have also begun to weave multiple digital identities for themselves - using digital technology they can now create their own alternative identities that they can wear and shed like skins for their own personal purposes. In this lecture I will discuss how the digital identities that we create for ourselves and those that others create or us affect both our image of ourselves, our own psychological makeup and well-being as well as how it affects how others see and deal with us.
-
15:24
»
SecDocs
Authors:
Max Kilger Tags:
identity management Event:
Chaos Communication Congress 22th (22C3) 2005 Abstract: The demarcation line that used to separate your digital identity from your real world physical identity is rapidly disappearing. More seriously, it is permanently changing the way in which the world sees you and you see yourself. Social identity lies at the very core of our existence as human beings. Without identity we are lost both in the physical and virtual world. Before the coming of the digital revolution, most people struggled to create a single, permanent identity that stayed with them for the remainder of their lives. Digital technology has changed that way of life forever. People are now given digital identities by governmental, business and military organizations, sometimes with their knowledge but often without them knowing. People have also begun to weave multiple digital identities for themselves - using digital technology they can now create their own alternative identities that they can wear and shed like skins for their own personal purposes. In this lecture I will discuss how the digital identities that we create for ourselves and those that others create or us affect both our image of ourselves, our own psychological makeup and well-being as well as how it affects how others see and deal with us.
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5:01
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Hack a Day
[Sam] picked up a Sansa Clip audio player to listen to some tunes while working on projects. He liked the fact that he could run the Rockbox alternative firmware on the device, but thought the 15 hour battery life needed some improving. He swapped out the stock cell with a larger Lithium cell for a [...]
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9:07
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Hack a Day
It may seem trivial at first, but the effect [Dan] gets when using binoculars as a telephoto lens is surprising. The images are well in focus with great colors. This technique not only brings your subject mater closer but also provides a depth-of-focus feature not normally available on simple cameras or camera phones. The proof [...]
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Hack a Day
It’s neat to watch these lilies open and close during the time-lapse movie. But what makes it even better is to see the camera slowly move during the time-lapse event. It’s thanks to a special dolly which the photographers built for this purpose. The system is based on two curved and inclined pipes which make [...]
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8:31
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Hack a Day
Here’s a way of transmitting audio that makes it virtually impossible for someone else to listen in. Instead of sending radio waves bouncing all over creation, this uses the focused light of a laser to transmit audio. In the image above you can see the silver cylinder which houses the laser diode. It is focusing [...]
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Hack a Day
We think [Brian Delacruz] latched on to a good idea with this photo printer project. Instead of building a big photo booth for his party he developed a Raspberry Pi based WiFi photo printer. Right now it’s a prototype that lacks the kind of polish necessary to make a true user-friendly device. But the idea [...]
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Hack a Day
A little bit of technology goes a long way when it comes to stop motion animation. In this case it’s a trio of simple camera dollies built during production of a short film called The Maker. A Dolly is a method of mounting the camera so that it can be moved smoothly during a shot. Of [...]
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Hack a Day
[Paulo] needed to photograph small objects on the go. Since you can’t always depend on ambient lighting conditions he built a battery operated light box which is easy to take along on his travels. We’ve featured portable light tents before, but they still tend to be a bit too bulky for his tastes. He chose [...]
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11:30
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Hack a Day
Femto-photography is a term that derives its name from the metric scale’s prefix for one-quadrillionth. When combined with photography this division of time is small enough to see groups of light photons moving. The effect is jaw-dropping. The image seen above shows a ‘light bullet’ travelling through a water-filled soda bottle. It’s part of [Ramesh Raskar's] [...]
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Hack a Day
This is a Raspberry Pi outfitted in a DSLR battery grip. [Dave H] was very interested in the idea of combining a single-board computer with a high-end camera. The size and cost of such a computer was prohibitive until the RPi came along. He managed to fit the board into the broken battery grip he [...]
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Hack a Day
[Matt the Gamer] loved his pair of Minimus 7 bookshelf speakers. That is until a tragic hacking accident burned out the driver and left him with a speaker-shaped paper weight. But the defunct audio hardware has been given new life as a single portable powered speaker. Now he can grab it and go, knowing that [...]
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Hack a Day
This is a great project for a slow afternoon, or a beginners introduction to DIY. [William] shows off a really simple speaker project that results in a light show as well as a decent enclosure. He’s using a PVC elbow to mount the speakers. They’re just glued in place. Below that, a section of clear [...]
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15:01
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Hack a Day
Motion sensing can be quite effective when taking photographs of wildlife. But how can one be sure that the motion was at the center of the frame? A PIR sensor picks up motion in its entire viewing range. It’s not really something that can be aimed. But if you use two PIR sensors you can [...]
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13:01
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Hack a Day
[Brattonwvu] wanted to lay down some tracks with as high an audio quality as possible. To help get rid of the noise pollution of the everyday world he built this isolation booth in his attic. The project started off with a trip to the home store for some 2×4 stock and OSB to use as [...]
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9:01
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Hack a Day
[Jasper] sent in a project he, [Quinten], and [Mr. Stock] have been working on for a while. It’s called the Pristitrope and brings the classic 19th centrury paper-based animation device into the 21st century with 18 LCD displays. The lazy suzan portion of the build was fabricated out of plywood cut on a CNC router and [...]
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9:01
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Hack a Day
[Jasper] sent in a project he, [Quinten], and [Mr. Stock] have been working on for a while. It’s called the Pristitrope and brings the classic 19th centrury paper-based animation device into the 21st century with 18 LCD displays. The lazy suzan portion of the build was fabricated out of plywood cut on a CNC router and [...]
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14:01
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Hack a Day
When you’re driving for days on the highway, you see some interesting things. If you’re like me, you usually don’t have the time to get your camera out and snap a picture. Especially if it is just a goofy looking car, or an interesting tree or something. This hack will make it really easy to [...]
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12:01
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Hack a Day
Back when broadcast television was first switching over from analog to digital most people needed to get a converter box to watch DTV broadcasts. Remember that abomination that was “HD-Ready”? Those TVs could display an HD signal, but didn’t actually have a digital tuner in them. Nowadays all TVs come with one, so [Craig] found [...]
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13:01
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Hack a Day
[Michael Chen] liked the sound he was getting out of these Corsair SP2200 computer speakers, with one big exception. They were giving off some unpleasant crackling sounds. He figured this might be as easy as replacing a faulty potentiometer, but soon found out the fix was going to be more complicated than that. All said [...]
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9:01
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Hack a Day
The SoundPuddle project drives thousands of LEDs based on audio input. The team is working on a replacing the controller for this wire-filled setup with something more robust. They took the mess seen above to the Apogaea Festival and were plagued by loose wires and unreliable communications due to noise and interference. The aim of [...]
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13:01
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Hack a Day
[Michael H] tipped us off about this guide to using view camera lens parts with DSLR cameras and lenses. We weren’t familiar with the term ‘view camera’ but we certainly recognize the accordion-like bellows that define that type of camera. The idea is that modern cameras with their fixed lenses miss out on some types [...]
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11:01
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Hack a Day
In this project [Ryan] shows how he added Bluetooth audio to the stock stereo of his Toyota Matrix. The work he did with his add-on hardware is quite good. And the installation was surprisingly easy. For example, the dashboard bezel which is hanging in the foreground of this picture simply pulls off without the need [...]
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14:47
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Hack a Day
[SkyWodd] took the easy route when it came time to build this light painting bar. But he was still met with great success. Thanks to his well-documented work you should be able to throw this together for yourself in about an hour. The idea here is to build a full-color display that will draw a [...]
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5:01
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Hack a Day
Reader, [klemens], suggested DMG Lib to us when we posted about a similar site. DMG-Lib is an amazing source of information. It’s primary downside is that a great portion of the text is in a language other than English, though in some ways this is a plus. Latin, Italian, German, and many other languages held the position [...]
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12:01
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Hack a Day
One high-speed photography controller to rule them all. If you’re looking to photograph droplets of water splashing on a still reservoir this is the ticket. But if you’re not, it still offers an incredible amount of flexibility for other high-speed needs. Inside you’ll find an Arduino Mega, which has plenty of room to bend to [...]
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10:01
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Hack a Day
[Marcell] has always been turned off by the price tag of commercially available double flash adapters. He decided to see what kind of performance he could get out of a flash adapter which he built himself. The raw materials used should seem quite familiar. The optical fibers act as a conduit to redirect the light [...]
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5:01
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Hack a Day
This laser light painting setup can even control the camera. But it probably will not work with your average point-and-shoot. The exposure time used is somewhere around 2 seconds long, a feature which is hard to find on anything but DSLR cameras. The setup relies on a red laser diode to do the painting. When [...]
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15:02
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Hack a Day
[Mike Field] was working on interfacing his TI Chronos eZ430 watch with the Raspberry Pi. As things were going pretty well, he took a side-trip from his intended hack and implemented watch-based control for an RPi audio player. It really comes as no surprise that this is possible, and even easy. After all, the RPi [...]
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8:02
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Hack a Day
Here [Matthew Br] explains the situation he’s in with the neighbors that share this wall of his apartment. When they listen to music they like it loud and so he gets to ‘enjoy’ the experience as well. But he can’t ignore it any longer, and has decided to use a sound volume detector to blast [...]
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15:06
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Hack a Day
[Ray] wanted to use a microcontroller to send signals to some wireless power outlets. Instead of tapping into the buttons on the remote control he is using an RF board to mimic the signals. There are two hurdles to overcome with this method. The first is to make sure your RF module operates on the [...]
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9:01
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Hack a Day
[Kayvon] just finished building this chiptune player based on a PIC microcontroller. The hardware really couldn’t be any simpler. He chose to use a PIC18F2685 just because it’s big enough to store the music files directly and it let him get away with not using an external EEPROM for that purpose. The output pins feed a [...]
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12:01
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Hack a Day
[Danman1453] is ready to face the rest of his summer thanks to this toolbox boombox he built for outside use. It’s always nice to have some tunes when laboring at those not-so-fun jobs (we’ve got some windows that need re-glazing and you can bet we’re not doing that in silence). But if you can’t really hear it [...]
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4:01
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Hack a Day
Since we’re not high-end camera aficionados it was a surprise to us that the hot shoe that allows a camera to interface with a flash module has changed rather dramatically over the years. Apparently the interface used to be mchanical-electrical in that the camera would use mechanical means to connect two electrodes from the hot shoe. It didn’t matter [...]
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12:01
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Hack a Day
A picture’s worth a thousand words so what is a hat that can take 360 degree pictures worth? Just make sure you put it on whenever leaving the house and capturing that next memorable moment will be just one click of a button away. [Mikeasaurus] recently put together this… special… headgear. He used film-based disposable [...]
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5:00
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Hack a Day
Backyard parties are going to rock over at [Effin_dead_again's] house. That’s because he just finished building this outdoor stereo. It carries its own power supply so you can take it on the road with you, and we don’t think you’ll have trouble hearing it with the 240 Watt amplifier hidden inside. He shared the equipment details [...]
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5:01
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Hack a Day
[Mike Worth] wanted to use his camera for some time-lapse photography. Since it’s used to take many pictures over a long period of time, he doesn’t want to deal with batteries running low. But there’s no standard power jack on the side; instead the official charger consists of an adapter that is inserted in place [...]
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13:01
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Hack a Day
A couple of years back [Bryan's] iPod went on the fritz. It wasn’t completely broken, as long as he kept it really cold it still worked. So what was he to do with the crippled device? We’ve all heard of elevator music. [Bryan] decided to invent refrigerator music. First he needed some speakers. A trip [...]
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11:01
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Hack a Day
[Gil] sent in an awesome paper from this year’s SIGGRAPH. It’s a way to detect subtle changes in a video feed from [Hao-Yu Wu, et al.] at the MIT CS and AI lab and Quanta Research. To get a feel for what this paper is about, check out the video and come back when you pick your [...]
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17:01
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Hack a Day
Here’s a full-featured remote shutter project which [Pixel-K] just finished. It seems that he’s interested in taking time-lapse images of the cosmos. Since astrophotography happens outside at night, this presented some special design considerations. He wanted something that he could configure in the dark without zapping his night-vision too much. He also wanted it to [...]
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9:03
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Hack a Day
[John] has been working on a video-based eye tracking solution using OpenCV, and we’re loving the progress. [John]‘s pupil tracking software can tell anyone exactly where you’re looking and allows for free head movement. The basic idea behind this build is simple; when looking straight ahead a pupil is perfectly circular. When an eye looks [...]
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6:00
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Hack a Day
This portable sample player packs quite a punch. [Lee] wanted a nice portable way to take his samples with him, but refused to water-down the features just because it is portable. He set of goal of playing between 3-8 simultaneous notes from a large assortment of stored samples. Sample space was the first design consideration, [...]
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16:09
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Packet Storm Security Recent Files
This is a presentation called Security Vulnerabilities of Digital Video Broadcast Chipsets. It is from a talk given at the Hack In The Box security conference in Amsterdam in 2012.
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16:09
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Packet Storm Security Misc. Files
This is a presentation called Security Vulnerabilities of Digital Video Broadcast Chipsets. It is from a talk given at the Hack In The Box security conference in Amsterdam in 2012.
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16:09
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Packet Storm Security Recent Files
This is a presentation called Security Threats in the World of Digital Satellite Television. It is from a talk given at the Hack In The Box security conference in Amsterdam in 2012.
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5:01
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Hack a Day
This is a first for us. We’ve never heard of an instrument modeled after a pig sty before. The Styharp, built by [Yann Seznec], for [Matthew Herbert] is meant to be a mix between performance and visual art. [Matthew]‘s followed a pig from birth to the plate and made an album from the sounds he [...]
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8:01
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Hack a Day
From 1902 to 1905, Polish anthropologist [Bronislow Pilsudski] did a series of recordings in Hokkaido japan on wax cylinders. Researchers at the university of Hokkaido have been working on ways to read the cylinders without causing any further damage to the grooves. Their preferred method has been to use reflected laser light. They have a [...]
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6:01
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Hack a Day
[Jeri] built this really cool C64 bass Keytar from a commodore64 and a cheap bass guitar. She’s using an FPGA to do the string detection and the key scanning, it then sends everything to the original 8bit sound chips. The reason that she is using a bass guitar is that the commodore sound chip only [...]
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10:01
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Hack a Day
The Sansa Clip+ is a nice little MP3 player and recorder. But it doesn’t offer an input connector, instead relying on the built-in microphone. [Simon Frank] wanted to extend its functionality so he figured out how to add a standard audio jack for analog input. This is not the first time this has been done, [...]
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7:01
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Hack a Day
Several of us here at Hackaday have discussed how much we’d like to have some tools, like a 3d printer, but just can’t justify the cost. What would we make? Why do we really need one? Why don’t we just bother [Brian Benchoff] who already has one to make us parts instead. That’s usually how [...]
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15:01
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Hack a Day
It’s somewhat amazing how these rather inexpensive electronics can augment the functionality of a common stethoscope. This digital stethoscope is using audio processing to add the features. A standard chest piece feeds a condenser microphone which is fed through a pretty standard OpAmp circuit which supplies the ADC of an ATmega644. After being digitized, the heart sound [...]
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8:01
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Hack a Day
[Mesoiam] managed to pick up a Viscount hammer weighted keyboard for pretty cheap. For those who are unfamiliar, Viscount makes keyboards that feel like you’re playing a piano, hammers and all. The only problem with this, as [Mesoiam] discovered, is that even when he’s jamming with headphones in, his friends down stairs can still hear [...]
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6:01
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Hack a Day
[Guy] wrote in to share this motorized camera lens project he recently finished. He really loved the zoom lens, but since both zoom and focus are manually controlled, he sometimes had trouble getting both set to the right place in time to take the shot. With modern DSLR cameras which allow video capture, he also [...]
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12:01
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Hack a Day
[Neoxy] always wanted surround sound for his computer, and one day he managed to get a hold of a dead 5.1 system. Why buy one when you can repair someone’s rubbish, right? That turned out to be easier said than done, but after several false-starts he managed to resurrect the audio system by replacing the microcontroller. We [...]
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15:01
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Hack a Day
[Ajeromin] was asked to build something cool for a museum exhibit. He took the challenge, and with his facial capture device, we feel he delivered. The writeup is very short, most of the story is in the annotated images. After deciding he was going to do facial capture and convert it to 3d, he had [...]
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13:01
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Hack a Day
This wildlife camera is really easy to put together. You should keep it in mind if you’re ever tying to figure out what’s eating the heads off of all of your tulips. [Revoltlab] put it together, and although there’s one fatal flaw in this particular system, the concept is quite sound. The build uses a [...]
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8:01
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Hack a Day
[Luo] sent in a very easy way to add a remote shutter to just about any Canon Powershot. Even though it’s just a button, battery, and USB cable, we’re sure this would be a great project to teach the younglings about the power of soldering. Some Canon Powershot digicams are impressive beasts with the ability [...]
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11:01
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Hack a Day
This turntable can automatically digitize objects for use in 3D rendering software like Blender3D. [James Dalby] built it using a high-quality DSLR, and some bits and pieces out of his junk box. The turntable itself is a Lazy Susan turned on its head. The base for the spinning model is normally what sits on the [...]
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4:01
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Hack a Day
[Matt]‘s Descriptive Camera looks just like any other point and shoot camera, albeit a little more boxy and homemade-looking. It even works just like the Polaroids of yesteryear – snap a picture and in a few minutes you’ve got a reproduction in your hands. Unlike any other camera before, [Matt]‘s camera doesn’t give you an image. [...]
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8:01
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Hack a Day
A group of students at the University of Dundee have created this interesting prototype called Sound Sculpted. The goal was to sculpt clay using sound files drive the sculpting arms. Ideally, you would end up with pieces of art that were unique to each piece of music. As you can see in the video (after [...]
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7:01
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Hack a Day
Stop Motion Animation has always been interesting to me since I “discovered” that one could make animated flip books by drawing each frame a little different. Fast forward 20 years or so, and computer technology has gotten to the point where this sort of thing can be done electronically quite easily and at an incredibly [...]
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10:01
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Hack a Day
From time to time we find ourselves in the mood for some Chiptunes. You know, the music that accompanied all of the best 8-bit console games? These days there are a lot of projects that use the audio chips of yore to recreate the sounds, but you’re always faced with the issue of sourcing those [...]
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10:01
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Hack a Day
We’re rather impressed with the work [Aaron] did to add Bluetooth connectivity to his 2008 Honda. He used an aftermarket kit, but rolled in his own revisions to make it look and feel like an original feature. After being disappointed by an expensive docking system he grabbed a Jensen BT360 kit for about $35. It [...]
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15:01
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Hack a Day
When [Matt] came across a small video camera made to fit onto a keychain, the first thing that came to mind is a time-lapse video throwie. Like the LED + coin cell battery + magnet we’ve seen we’ve seen before (and deployed…), [Matt]‘s video throwie would be deployed in interesting spots for a few days [...]
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14:21
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Hack a Day
[Muris] has a friend who is selling items on the internet. This friend wanted a simple way to make rotating images of the products and asked him to help. The result of his labors is this base unit that drives the turn table and controls the camera. The first iteration of the turntable was powered [...]
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13:53
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Hack a Day
[Martyn] is restoring a 32-year-old Honda motorcycle, so when the ancient speedometer broke last year he thought it was prime time to start of a digital speedometer project. We’re loving the results so far, and would love seeing it on a nicely restored bike. Instead of the relative horror of driving 40 LEDs with a [...]
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13:05
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Hack a Day
Most of us have been faced with the anguish of being shot in the head repeatedly by 12-year-olds. There are also the times when we’re overjoyed by defeating the Mother Brain and making it out of the caverns of Zebes. If we wanted to scientifically quantify how happy, sad, or angry we are while playing video [...]
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13:01
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Hack a Day
These brave birds are weapons of war. Well, not these actual birds… they’re just models used for this photograph courtesy of a taxidermist. But their living relatives were used to take spy photographs during World War I. [Dr. Julius Neurbronner] didn’t suddenly jump into the field of avian photography. He, like his father before him, [...]
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8:01
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Hack a Day
A media player based on an Arduino and SD card has been done to death several times over, but that doesn’t mean we can’t appreciate [Matt]‘s MSP430 audio player. It’s a very nice piece of work that supports a FAT16 file system and only takes up 54 bytes of RAM. To make his dream of [...]
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13:01
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Hack a Day
It’s not really conceived as a spy cam, but it could be. [Quinn Dunki] built this tiny time-lapse camera project with racing in mind. She’s involved in a group that endurance races clunkers, and part of the fun is sharing the experience of riding around in the old beaters. The module seen above takes a [...]
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14:30
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Hack a Day
The concept of having a digital gaming table got stuck in [RobotGuy's] mind over the weekend and he managed to whip this up in no time using materials on hand. He already had a ceiling-mounted projector which just happens to reside immediately above the space occupied by his coffee table. By swapping that piece of [...]
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10:01
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Hack a Day
What if you could add gesture recognition to your computer without making any hardware changes? This research project seeks to use computer microphone and speakers to recognize hand gestures. Audio is played over the speakers, with the input from the microphone processed to detect Doppler shift. In this way it can detect your hand movements [...]
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10:57
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Hack a Day
DSLRs aside, the price of digital cameras these days can make it easy to consider just tossing your old one out when it breaks. [Leonidas Tolias] had another idea, and with a few broken cameras he had on hand he constructed a slick little pocket-sized projector. The project started out as a pair of lenses [...]
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14:22
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Hack a Day
If you were to try to take a picture of a UFO, how would you do it? Sit by the side of a road in Nevada near Area 51? Pie tin on a string? A French team of UFO enthusiasts put together an automated UFO detection device (Google translate) out of a disco light and CCTV [...]
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10:01
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Hack a Day
Here’s another audio playback hack that uses physical tokens to choose what you’re listening to. It uses Touchatag RFID hardware to control iTunes. The concept is very similar to the standalone Arduino jukebox we saw on Wednesday except this one interfaces with your computer and the tags select entire albums instead of just one song. [...]
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16:01
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Hack a Day
[Dominik] built a fun musical toy for his daughter [Anna]. It’s a jukebox that lets her play her favorite tunes using RFID tags to select between them. The project is simple, yet robust. The enclosure is a wooden craft box that you can pick up for a couple of bucks. Inside there’s an Arduino with [...]
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14:01
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Hack a Day
[Entropia] decided to try his hand at rolling is own sound card. He picked out a DAC chip, started his prototyping by studying the reference design from the datasheet, then went through several iterations to arrive at this working model. He chose to base the board around the PCM2706. It’s a digital to analog converter [...]
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12:01
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Hack a Day
Building an audio player is a fun project. It used to be quite a task to do so, but these days the MP3 decoder chips are full-featured which means that if you know how to talk to other chips with a microcontroller you’ve got all the skills needed to pull off the project. But that [...]
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10:01
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Hack a Day
At Hack a Day, we’ve seen dozens of intervalometer builds that open and close a camera shutter remotely. [Luke Skaff] decided to take these builds to the next level by automating a camera’s focus and shutter with a Nintendo DS. [Luke]‘s build is based on the Open Camera Controller project that puts the power of an intervalometer, [...]
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8:01
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Hack a Day
Right after “no editing whatsoever”, the “shaky camera” is the bane of YouTube viewers the world over. [David] came up with a nice solution to the problem of shaky cameras that uses gyroscopes to even out the bumps of making a great movie. Most cameras attached to moving frames – from the zip-line cameras at NFL [...]
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8:22
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Hack a Day
[Steven] needed to come up with a project for the Computer Vision course he was taking, so he decided to try building a portable 3D camera. His goal was to build a Kinect-like 3D scanner, though his solution is better suited for very detailed still scenes, while the Kinect performs shallow, less detailed scans of [...]
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13:18
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Hack a Day
We need to find the kind of friends that [Dino] has. They seem to drop off all of their older, yet totally awesome, electronics with him once they’re through with the devices. One example of this is the Sony Handycam that came into his possession. He decided to crack it open and repurpose the 20x optical [...]
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9:01
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Hack a Day
Whatever your reasons may be, if you’re going to be holding a camera for long periods of time this shoulder mount will both steady the image, and help save you some aches and pains. [Kyle Jason] built the rig seen above for just $20 by following this guide. [Knoptop] published the guide about a year [...]
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8:01
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Hack a Day
Put your face close to the screen and cross your eyes until the two images above become one. You may need to adjust the tilt of your chin to make it happen, but when they come together you’ll see [John Lennon] pop out in 3D. This was made using a 3D rendering script for The [...]
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9:37
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Hack a Day
That finished look for your project is all about the enclosure you find to host it. We think [Punge] really did a great job with the case for this DIY intervalometer. The build section of the project page links to the company that makes the enclosures. They’re meant to host round PCBs with several options [...]
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11:01
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Hack a Day
Here’s one way to get more control of your camera lenses. [Vladimir] built an Arduino-based pass-through ring (translated) which intercepts automatic lens controls. It’s meant for use with the Canon EOS lenses which have their own electronics allowing control of things like focus and zoom. It seems like part of the motivation here was to uses the [...]
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8:05
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Hack a Day
If you’re forever alone we’d guess you’ve long since stopped crying about it. But if you’re still prone to shed a tear on a dateless Valentine’s day this project’s for you. [Mikeasaurus] spruced up this pillow to play a tune when it senses your lonely soul. It’s got a moisture sensor which triggers an audio [...]
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15:44
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Hack a Day
[Dan] had been wanting a pair of Bluetooth headphones for quite a while. Most of the reviews for wireless headphones in the $50-$80 range complained of tinny sound and dropped bass. Nevertheless, he stumbled upon a $20 pair of headphones with similar reviews and realized that he could switch out the driver and make a decent [...]
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13:41
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Hack a Day
As a boy scout properly acculturated into the DIY philosophy, [Adam] really wanted to get his hands on the new Inventing merit badge. The merit badge required solving a problem, so of course a pinewood derby instant replay system was the obvious solution. After thinking through a few solution paths like a radio-controlled camera that follows the cars, [...]
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10:41
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Hack a Day
This lens adapter makes a lot of sense if you’re looking to interface with cameras that don’t have an in-built mounting option. It uses the cap and threaded neck from a soda bottle (translated) to make the lens adjustable and removable. In the past we’ve seen this hack using a lens cap with a hole drilled in [...]
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14:29
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Hack a Day
[Jaroslav's] camera didn’t have a feature to measure the speed of its response in different modes so he figured out his own method. Using the microphone on his webcam he recorded the sound made by the mirror and shutter movements, then used Audacity to analyze the camera’s performance. When you get right down to it, [...]
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14:33
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Hack a Day
[Samimy's] latest project is a little strange, but one man’s weird is another man’s wonderful so we’re not about to start criticizing his work. Nope, we’re here to praise the fact that his rotary phone turned reading light and audio amp is very well constructed. He started by removing the phone housing. Those old enough [...]
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11:57
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Hack a Day
We know some folks are very upset by the scrapping on vintage hardware, so let’s all observe a moment of silence for this NES controller. Now that that’s behind us we can live vicariously through [Burger King Diamond's] project. He polished up the NES controller and repurposed it as an enclosure for a portable MP3 [...]
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4:01
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Hack a Day
Most people use pacemakers to, you know, keep their heart pumping at a steady rhythm. [David Prutchi] on the other hand has found a pretty novel use for some of the old pacemakers he has in his collection. We really had no idea that pacemakers had uses outside the world of medicine, but [David] has [...]
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8:51
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Packet Storm Security Advisories
Cisco Security Advisory - Cisco Digital Media Manager contains a vulnerability that may allow a remote, authenticated attacker to elevate privileges and obtain full access to the affected system. Cisco Show and Share is not directly affected by this vulnerability. However, because Cisco Show and Share relies on Cisco Digital Media Manager for authentication services, attackers who compromise the Cisco Digital Media Manager may gain full access to Cisco Show and Share. Cisco has released free software updates that address this vulnerability. There are no workarounds that mitigate this vulnerability.
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8:51
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Packet Storm Security Recent Files
Cisco Security Advisory - Cisco Digital Media Manager contains a vulnerability that may allow a remote, authenticated attacker to elevate privileges and obtain full access to the affected system. Cisco Show and Share is not directly affected by this vulnerability. However, because Cisco Show and Share relies on Cisco Digital Media Manager for authentication services, attackers who compromise the Cisco Digital Media Manager may gain full access to Cisco Show and Share. Cisco has released free software updates that address this vulnerability. There are no workarounds that mitigate this vulnerability.
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8:51
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Packet Storm Security Misc. Files
Cisco Security Advisory - Cisco Digital Media Manager contains a vulnerability that may allow a remote, authenticated attacker to elevate privileges and obtain full access to the affected system. Cisco Show and Share is not directly affected by this vulnerability. However, because Cisco Show and Share relies on Cisco Digital Media Manager for authentication services, attackers who compromise the Cisco Digital Media Manager may gain full access to Cisco Show and Share. Cisco has released free software updates that address this vulnerability. There are no workarounds that mitigate this vulnerability.
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8:41
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Hack a Day
Believe it or not, the local Children’s Museum staff was happy that [Bill Porter] left this mess of wires and equipment in one of their offices. It makes up an ambient sound system for a couple of their exhibits. A movie without sound just doesn’t fully entertain, and the same can be said for these [...]
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11:36
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Hack a Day
It’s a fun time to design your own MP3 player, lovingly adding in features to a meticulously crafted user interface. But sometimes you just want a quick and cheap way to add music to a project. [Jeff Ledger] will show you how to do just that using some knock-off hardware from overseas. Instead of a [...]
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13:59
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Hack a Day
[Fotoopa] keeps churning out new iterations of his laser-triggered camera rig. This is his latest, which he calls the 2011 setup. Regular readers will remember that we just covered a different version back in November; that one was the 2010 rendition. It had two DSLR cameras offset by 90 degrees with mirrors to face forward. [...]
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10:01
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Hack a Day
In an effort listen to his music on shuffle without the need to touch the volume knob [Mike] build his own automatic volume leveling hardware. He knows what you’re thinking right now: there’s software to do that for you. But building the feature in hardware is a great stepping off point for a project. He [...]
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15:25
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Hack a Day
[L] just finished building this intervalometer and his verbose documentation of the project has a little bit of everything. The fabrication uses common prototyping materials, and simple skills that are easy to master even for the beginner. The hardware is based around an ATmega8 microcontroller. After snooping around the Internet [L] wanted to see if [...]
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14:25
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Hack a Day
[Shameel Arafin, Sean McIntyre, and Reid Bingham] really dig rainbows. Going by the moniker the “RainBroz”, the trio built a portable display that can be used to add cool light painting effects to pictures. The group brings their Rainbow Machine all over the place, including parties, gatherings, and random spots on the street. Anyone is [...]