There is a great article in http://www.fastcodesign.com/ on Harvey Moon’s robotic drawing machine using MAX/MSP, Processing with Arduino. Pavlus does a great job on this article so I am just going to send you there to check it out. There is a cool video of the device in action there as well. Thanks to Gerardo Gean for the heads up on this cool project!
Abraham Lincoln drawing done by Harvey Moon’s machine. See article in fastcodesign.com