Pantograph Plotter

Remember the fun (and frustration) of twirling the knobs on an Etch-A-Sketch (tm) drawing toy? Trying to make a reasonable pattern was really tough. Well, with the help of an Arduino and a few servos, we've recreated the basic knob-turning drawing experience, with a few enhancements.
Stop by our exhibit and use your skills (or lack thereof) to sketch out a pen and ink drawing using our low-tech human interface.
Take your completed drawing with you as a souvenir of your visit.