Harmonograph
An electronic drawing machine which mimics the working of a traditional harmonograph
A machine made using two arms attached to wheels run by individual DC motors with a variable resistance in each circuit. Each wheel had holes at three different distances from the center of rotation allowing the arms to have three different possible radii to allow more variation. The variable resistors were made in such a way that the speed of each wheel could be controlled up to 10 different speeds. The machine was made by Ben Erickson and Uddhav Kedia.
