I've been building an Arduino drawing robot named "PlotterBot" (formerly known as DrawBot) This Thing is my OpenSCAD file plus all the STL's you'll need to build a robot exactly like mine.
I've been blogging about it over on my site. I've documented absolutely everything, including my colossal failures, over the course of two years and 80 posts -
I'm hoping to win the Road to Maker Faire Challenge, so please vote for me here http://shor.tw/3a
Voting ends just before midnight on 4/15/2013 (that's today!!!) so please vote! http://shor.tw/3a