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20 items tagged "ray"
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7:10
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Hack a Day
If you’re into adding electronics to your wearable items this little board will be of interest. The 1.6″x1.6″ board is called SquareWear and comes in several different flavors. It may be a bit of a surprise that this is not an Arduino compatible board. [Ray] tried a few projects with PIC microcontrollers and ended up [...]
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5:05
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Hack a Day
The Robotic Manta Ray codenamed MantaBot created by the Bio-Inspired Engineering Research Laboratory (BIER Lab) is set to make a splash. The next evolution in underwater Robotics is here. We have seen the likes of robotic fish and Jelly fish now to be added to the school is the MantaBot which has been designed to mimic [...]
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5:01
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Hack a Day
At this year’s HOPE conference, German competitive lockpicker and security researcher [Ray] gave a talk about escaping high security handcuffs that are probably being used by your local police and other LEOs. He’s doing this with 3D printed and laser cut keys because, you know, security through obscurity never works. Two years ago, [Ray] gave a [...]
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13:33
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SecDocs
Authors:
Peter Eckersley Tags:
cracking Event:
Chaos Communication Congress 24th (24C3) 2007 Abstract: AACS is the DRM system used on HD-DVD and Blu-Ray discs. It is one of the most sophisticated DRM deployments to date. It includes around twelve different kinds of keys (in fact, even counting the different kinds of keys is non-trivial), three optional watermarking schemes, and four revocation mechanisms (for keys, hardware, players, and certain disc images). AACS has been repeatedly cracked. Its revocation mechanisms are intended to ensure that none of these cracks is permanent, but the evidence so far suggests that crackers will continue to win against it. The talk will explain the many types of AACS keys, how the system fits together, why it will keep breaking, and what Hollywood gains by using it anyway. We will also consider whether it is possible for DRM to be any more evil. Is BD+ (an optional, Blu-Ray only DRM system) going to be worse for users? Will future generations of DRM be worse? Or, if the free world can survive AACS, can it survive anything?
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13:29
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SecDocs
Authors:
Peter Eckersley Tags:
cracking Event:
Chaos Communication Congress 24th (24C3) 2007 Abstract: AACS is the DRM system used on HD-DVD and Blu-Ray discs. It is one of the most sophisticated DRM deployments to date. It includes around twelve different kinds of keys (in fact, even counting the different kinds of keys is non-trivial), three optional watermarking schemes, and four revocation mechanisms (for keys, hardware, players, and certain disc images). AACS has been repeatedly cracked. Its revocation mechanisms are intended to ensure that none of these cracks is permanent, but the evidence so far suggests that crackers will continue to win against it. The talk will explain the many types of AACS keys, how the system fits together, why it will keep breaking, and what Hollywood gains by using it anyway. We will also consider whether it is possible for DRM to be any more evil. Is BD+ (an optional, Blu-Ray only DRM system) going to be worse for users? Will future generations of DRM be worse? Or, if the free world can survive AACS, can it survive anything?
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13:29
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SecDocs
Authors:
Peter Eckersley Tags:
cracking Event:
Chaos Communication Congress 24th (24C3) 2007 Abstract: AACS is the DRM system used on HD-DVD and Blu-Ray discs. It is one of the most sophisticated DRM deployments to date. It includes around twelve different kinds of keys (in fact, even counting the different kinds of keys is non-trivial), three optional watermarking schemes, and four revocation mechanisms (for keys, hardware, players, and certain disc images). AACS has been repeatedly cracked. Its revocation mechanisms are intended to ensure that none of these cracks is permanent, but the evidence so far suggests that crackers will continue to win against it. The talk will explain the many types of AACS keys, how the system fits together, why it will keep breaking, and what Hollywood gains by using it anyway. We will also consider whether it is possible for DRM to be any more evil. Is BD+ (an optional, Blu-Ray only DRM system) going to be worse for users? Will future generations of DRM be worse? Or, if the free world can survive AACS, can it survive anything?
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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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8:01
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Hack a Day
What do you do if you have 18 Geiger tubes lying around? [Robert] had an interesting idea to build a cosmic ray detector and hodoscope to observe the path cosmic rays take while flying through his lab. [Robert]‘s cosmic ray detector works by detecting the output 9 Geiger tubes on the y-axis and 9 Geiger tubes [...]
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7:01
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Hack a Day
We know that most of you will have no reason to ever make a miniature X-ray tube. However, we also know that many of you will find this video mesmerizing like we did. [Glasslinger] does a fantastic job of explaining the entire process of creating the mini x-ray tube from, procuring the uranium glass and [...]
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15:01
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Hack a Day
[Ray's] breadboard power supply lets you drain the last traces of power from ‘dead’ AA batteries. Electronics that are powered off of disposable alkaline batteries have a cutoff voltage that usually leaves a fair amount of potential within. Since many municipal recycling programs don’t take the disposables (you’re just supposed to throw them in the [...]
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14:59
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Hack a Day
We’re kind of surprised we haven’t covered this concept before since it only uses techniques that are commonly avaialable for home PCB fabrication. [Ray] made this solder paste stencil out of a sheet of copper using the same etching techniques you would for a circuit board. He designed and printed a resist pattern, with toner [...]
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13:09
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Hack a Day
We must admit that we’ve been guilty of using a microcontroller to make two LEDs blink alternately in the past. It’s not the worst transgression, but it stems from our discomfort with analog circuits. Luckily, [Ray] published an illustrated guide on building multivibrator circuits. This is a simple method of assembling a two-output oscillator. All [...]
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16:01
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Hack a Day
[Ray] wrote in to share a great project he just recently wrapped up, an open-source sprinkler valve controller. Built in collaboration with Wired Magazine’s editor-in-chief [Chris Anderson], the sprinkler controller is designed to replace the limited commercial sprinkler timers that typically come with a new home sprinkler setup. Their system greatly expands on the idea [...]
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15:01
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Hack a Day
[Ray] likes to build all sorts of Propeller-based projects, but one of the more interesting items we came across was this DIY ECG. While we have covered other DIY electrocardiograms before, he left the breadboard behind and put together a nicely done PCB for his build. The ECGs design should be pretty familiar to anyone [...]
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9:53
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Hack a Day
A while back, [Ben Gilstad] built his first HTPC, loading XBMC on it to manage all of his digital media. He loved XBMC’s features and flexibility, but he needed a way to enjoy his DVD and Blu Ray collection on the device without too much hassle. Far before [Ben Heck] considered fitting his Xbox 360 [...]
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11:01
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Hack a Day
[Chris] recently finished building a miniscule AV Test Box, capable of fitting inside a standard Altoids tin. It is a revision of a project he constructed a few years ago. His previous test box worked well, but was large and cumbersome – definitely not something you would want to carry around from place to place [...]
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10:25
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Hack a Day
Wielding the power to melt glass or instantly ignite most day to day materials can be intoxicating pretty fun. With a little math, a lot of patience, and 5,800 1cm pieces of mirror, this build requires welding glasses just to look at the 1-2cm focal point. With an idea rumored to date back to Archimedes, [...]
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9:30
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Hack a Day
Pastebin has the HDCP master key that we talked about in a post last week. This is the encryption protocol used for HDMI content protection on media such as Blu-Ray and High Definition cable television. The master key array is a 40×40 set of 56-bit hex used to generate the key sets. You get one [...]
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21:13
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SecDocs
Tags:
culture Event:
Chaos Communication Congress 26th (26C3) 2009 Abstract: At its heart, photography is a ridiculous hack to make pictures from light. In the 170 years since Talbot and Daguerre, techniques have been cleaned up and simplified. A field that once demanded experimentation and had no clear way of doing it right, now attracts many who haven't a clue why it all works. Innovation and new techniques occur on the edges - they are the beautiful fragments scattered in disaster, the sloppy chaos of the unknown. Discovery happens by doing it wrong. Beyond the traditions, beyond the rules, there be dragons, and they are the best teachers of all. In this talk, I will discuss the concept of fluency as it relates to photography, and how confidence in the medium is a direct result of doing it all wrong. Broken and inadequate equipment drives quick adaptation, because it has to work (in some definition of work) immediately. What are the absolute essentials of getting this photograph, right now? Right now is all there is. With fluency comes greater experimentation. Knowing the rules of a medium means knowing how to break them effectively. Experimental artists, like hackers, use the flaws and weaknesses of their medium to bend it to their will. New techniques are often discovered by accident or through questioning "what happens if I...?" Over time, some of these techniques, like solarization and multiple exposures, have become standard. What happens out at the borders where things break, where things are unpredictable? I will share some of my own processes as well as some by other artists, both historical and contemporary. Early photographers exploited motion blur that resulted from long exposures (half hour exposures were once the norm). Exposing a sheet of film more than once, intentionally or not, results in a composite image. Solarization, a partial darkening of highlight areas in a print or lightening of shadows in a negative, was made famous by the surrealist photographers Lee Miller and Man Ray. Even the corruption of digital files has been used for artistic effect. Something is only really a flaw before a suitable application is understood. To do it wrong, wholeheartedly, is to abandon the myth of perfection and predictibility in favor of discovery.
0day.today (was: 1337day, Inj3ct0r, 1337db)
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