I recently finished building this drawing machine by the excellent Sandy Noble http://www.polargraph.co.uk/ using his guide at Instructables http://www.instructables.com/id/Polargraph-Drawing-Machine/. It is build using Arduino a couple of stepper motors, wiring, cardboard and Processing. I love the results it is generating and even before I got it properly adjusted it did magic. Be sure to check back for more videos and images or get your own print at www.nastrup.dk
