Shimon Schocken gave a really interesting Google Tech Talk titled From Nand to Tetris in 12 Steps. In the video, he describes a course where students design a complete virtualized computer system from scratch, building from the humble nand gate, to a functional cpu and memory architecture, to compiler software and an operating system, all […]
On today’s BBtv, Xeni talks to Pablos Holman, a hacker at ETech, about how easy it is to nab data off of RFID-enabled credit cards. How to hack RFID-enabled credit cards for $8
This chic pet-substitute responds to touch with pulsing blue LED ‘eyes’ and a purring effect courtesy of Lilypad vibe boards. Two Lilypad Arduinos run the animal simualtion and the touch contact is implemented via conductive fabric layers – For this, I made two layers of fabric. One with three pieces conductive fabric that goes out […]
In 1970’s Communist Czechoslovakia, the state-run magazine ABCs for Young Technicians and Natural Scientists published a cut-out paper camera called the Dirkon. Looking very much like an old Nikon, the little camera is essentially a simple pin hole design, dressed up to look like its SLR cousin. Fast forward to 2000’s Capitalist USA and you’ll […]
Jason @ Hackszine writes: Check out Angela Yuan’s Etch-A-Scetch Clock. An Arduino powers a few stepper motors that clear the screen once a minute and then draw the current time. It looks like there is a laptop that is sending commands, presumably time updates, to the Arduino via processing. Her site is a little scant […]
You could buy a USB rocket firing turret, but this is a lot more fun to build. The ultrasonic sensor looks for any object that is closer than 30 inches. When it returns a positive signal, the turret turns and fires a foam disk. The source code is available for programming your BasicStamp2, and I’m […]
From Hackaday: Each coil is driven by a dedicated relay, and a PC power supply feeds the system juice, while a programmable logic controller does the work. Since it’s just a matter of triggering the coils in order, the PLC could be easily replaced by a micro controller. Coil Gun version 1 [via]
