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This one might be an oldie, but it’s certainly a goodie. Way back in 2005, [David] and [Charles] needed a project for one of their engineering courses. With so many loose resistors scattered over the lab, they decided to build an automated resistor sorter (PDF warning) to separate these resistors and put resistors of the same value [...]

Tags:  automated resistor sorter charles david plastic-tubes resistors engineering-courses Hardware  

The picture you see above is taken from the ROM of a Macintosh SE made in the  late 1980s. This black and white image remained buried inside old Macs until [Adam] and [Trammell] at NYC Resistor reverse engineered these old Mac ROMs and found a few really cool Easter eggs. [Adam] and [Trammell] have been dumping ROMs [...]

Tags:  easter uncovering trammell mac-roms adam old-macs easter-eggs resistor classic hacks  

[George] built an incredibly tidy resistor substitution decade box. These devices feature a pair of connections and a way to select the resistance between the two of them. In [George's] case it’s a pair of banana jacks and these eight thumbwheel switches. What you see above is the side of each thumbwheel switch. These are [...]

Tags:  resistor substitution decade george banana-jacks thumbwheel-switches news  

Check out this control center which [Awesome0749] built for launching fireworks. From the looks of his stash he’s going to be doing quite a bit of celebrating. The control console is clean and offers some safety features, and he just upgraded to an interesting ignition technique. He’s using CAT5 cable to connect to the fireworks. [...]

Tags:  resistor fiery control fiery-death safety-features holiday hacks  

If there’s one thing that will surely blind us, its reading resistor color bands. It doesn’t help that red looks exactly like orange, brown and black are indistinguishable, and different component manufacturers – for some reason – don’t use identical paints for coding their resistors. [Jeff] over at Gadget Gangster has been having the same [...]

Tags:  resistor calculator component jeff resistor-color-bands resistor-calculator component-values tool hacks  

Here’s a brain bender for you: YouTube user [Fredzislaw100] put up a video of six LEDs and six switches wired up in series. After soldering a resistor and 9V battery connector, the first switch turns on the first LED, the second switch turns on the second LED, and so on for the rest of the [...]

Tags:  led switch hackaday battery-connector super-deluxe resistor Ask hackaday  

We love the look of this papercraft piano which [Catarina] built along with some friends at NYC Resistor, a hackerspace in the big apple. It starts off as a cubic black box with a white top. But just lift that top as [Catarina] does in the video after the break and three of the sides [...]

Tags:  piano box synthesizer catarina digital-synthesizer resistor apple Hackerspaces  

[Martin] sent in two videos he found while cruising the tubes. The first video is a simple circuit with a resistor, three switches, and three LEDs. All the components are soldered together right in front of the camera. When a battery is connected, turning the first switch on makes the first LED light up. Turning [...]

Tags:  hackaday physics troll martin led-light resistor tubes Ask hackaday  

A hard drive crash, and some other happenings that aren’t entirely clear to us, led [Devbisme] to put in a parts order. As he wanted to make the most of his shipping costs, he decided to fill out the order with parts that he’ll use eventually. He’s been working with surface mount designs and wanted [...]

Tags:  resistor drive order resistor-values drive-crash surface-mount misc hacks  

[Alex Busman]‘s first foray in iOS programming looks like a pretty useful tool. He came up with Ohm Sense, an iPhone app that will take a picture of a resistor and calculate the value based on the color bands. It’s a great tool that we wish we had when we were starting out. At 99 [...]

Tags:  resistor ohm sense alex-busman resistor-color-bands busman iphone hacks  

[BarsMonster] just challenged our conceptions of ARM development with his single-sided development board that’s loaded with an STM32F100 (PDF warning) ARM microcontroller. The board is remarkably simple – just a regulator, resistor and a few caps are necessary to get a $1 ARM μC up and running. [BarsMonster] gave us a schematic of his board along [...]

Tags:  board ARM development arm-c conceptions resistor Hardware  

[Vincent] on the EEVblog forums had an idea for an inexpensive resistor substitution decade box. The build uses cheap decimal thumbwheel switches he bought on eBay. Each switch is wired up with resistors for each digit, and each switch is wired up in series. The result is a small, easy to read resistor box with [...]

Tags:  substitution box resistor vincent thumbwheel-switches resistors classic hacks  

[Riley Porter] posted a picture of his EvalBot USB power hack. In the photo above we’ve put a box around D6 and D7. The development board ships with a 0 Ohm resistor in the D7 location, patching in power from the USB-B connector labeled USB DEVICE. He found that by moving that resistor to D6 [...]

Tags:  evalbot resistor power riley-porter ohm-resistor board-ships microcontrollers  

Here we are with Episodes two and three (aka, NYC Resistor part one and two) completing the Take on the Machine Hackerspace challenge we mentioned a while back. For the challenge NYC Resistor took an old style slot machine and converted it into a drink mixing deviant; even making the device post a Tweet for [...]

Tags:  nyc machine resistor tweet old-style beer hacks  

Painting with light [Jo0ngle] wanted a fun toy and an easy conversation piece. He painted a square on the back of his door with some glow-in-the-dark paint. Now he can draw on it using a blu-ray laser or a UV flashlight. Either way, the effect is quite pleasing. [Thanks Justin] Resistor decoder rings This resistor [...]

Tags:  resistor june hackaday justin glow-in-the-dark-paint uv-flashlight painting-with-light hackaday links  

This isn’t a specific project, so much as a pointer to a budding new site. Puppet Circuits is the project of [Raphael Abrams], one of the co founders of NYC Resistor. As you can probably guess, he has been posting about the circuits he uses in his animatronic puppets. I faces all kinds of problems [...]

Tags:  circuits puppet project raphael-abrams animatronic-puppets specific-project resistor classic hacks  

[PT] tipped us off about a new way to screen bots from automatically leaving comments. Resisty is like CAPTCHA but it requires you to decipher color bands on a resistor instead of mangled text. This won’t do much for the cause of digitizing books, but if you can never remember your color codes this is [...]

Tags:  color edition resistor color-bands captcha color-codes HackIt  

The folks from NYC Resistor got their hands on a teletype machine and hacked it to monitor Twitter. This eighty-year-old beast bangs out messages that it receives at 45.45 baud. This isn’t a project that turns something into a teletype, but rather finds a different way to feed the machine data. In this case, a [...]

Tags:  twitter teletype machine teletype-machine resistor bangs arduino hacks