This is a prototype for  a drawing machine that uses one servo. The gears were successfully calibrated to work as intended but I have had trouble setting the center gear (that is powered by the servo) in place, to rotate the two secondary gears (that would move the pantograph). The idea was that while the pen on the pantograph is moving, so would the canvas that it would be drawing on. I thought it would be interesting to see what kind of geometry this double rotational movement would create. Unfortunately, it is not complete at the current state but I will continue to work on this.