Hack-A-Day friend [Limor] AKA [ladyada] has been promising a portable RF jammer for a while. guess what she sent me for Christmas? The Wave-bubble is a self tuning RF jammer – good for around 20 feet of RF enforced peace. (It outputs .1-.3 watts) With a pair of less efficient antennas, it even fits inside a pack … Read the rest
Wave Bubble portable RF Jammer
December 25, 2006 By 42 Comments
Make your own CO2 laser
December 24, 2006 By 12 Comments
We all remember the diy cnc laser. In my quest to bring you guys fresh stuff, I found an interesting design (the author says he built his in the 80s) for a home-built CO2 laser. The dimensions are missing, but the design is pretty simple. If you like some textbook style reading, the hyperphysics server is your friend. I … Read the rest
Gauss Pistol Redeux
December 23, 2006 By 20 Comments
Remember this? We hit it last year. [William] has been working hard, and made plenty of improvements. Aside from building it in black, he’s built a new model. He’s even hoping to release it as a kit in 2007. The latest version uses a PIC to fire the coils and manages the batteries, uses a pair of IR sensors … Read the rest
DIY ‘PS3 Sixaxis’ controller
December 22, 2006 By 10 Comments
[max] lets us know about this DIY ‘PS3 SIXAXIS’ style programmable controller. It’s a USB device that uses an accelerometer to provide an interactive human interface. They put one inside a model airplane and use it with a flight-sim. (I’d like to see them add some gyros to add some realistic resistance to the plane interface.)… Read the rest
Laser 3d scanning with a webcam
December 21, 2006 By 15 Comments
[Jan] noted that they’ve come up with an interesting, low cost method of 3d scanning over (Update: http://www.david-laserscanner.com/wiki) at the Institute for Robotics and Process Control. Once the software is calibrated with the preset background image, a laser line is run over the object (Just think about every sci-fi laser scanner you’ve ever seen) The software appears to measure … Read the rest
Digital Camera IR Filter removal
December 20, 2006 By 12 Comments
We’ve run across the idea of IR filter removal in the past. [Tony Z] pointed out this nice little how-to on removing the IR filter from a Canon a540 or a530 digital camera. I’m pretty blase about gutting electronics, but even I get a bit nervous about opening up recent model digi-cams. It’s so easy easy to jam … Read the rest
DIY MP3 How-to
December 20, 2006 By 10 Comments
Just a quick note – my How-To on building your own MP3 player is up. It’s more of a build walk-through and a review of MAKE’s Daisy MP3 player kit.
In case you missed it, Ben Heck put up a How-to on making your own robotic hand. It’s more of an exercise in CAD design with the intent to … Read the rest
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