See the video at http://alexleut.com/drawbot.html
This was my first legitimate "robot." I hacked it together from an arduino and a RC car chassis. Bizarrely, the forward/backward for the drive motor was pretty unproportionate. Because of this, my attempts at doing stuff like rendering golden spirals (via a little fibs generator) didn't work, so I just ended up using stuff in its way to keep it from getting out of control.
I plan to make a more controllable bot, maybe this time with modified servos or steppers to drive it.
- Standard Arduino Duemilanove
- L293D based motor shield from ladyada (http://www.ladyada.net/make/mshield/)
- Cheap RC car
- Lots of tape