What could you do with a lever, two circles with 6 holes each in them, and 3 pegs on the control panel?
Try running the puzzle by pulling the lever across the panel.
When you pull the lever on the control panel, a ball will be shot into a hole in the right wheel. If then goes up-side-down on the track above it and lands on a space on the left wheel. The wheel and the circle on the panel will both spin, stopping only when a peg drops from the circle. If that happens, the ball will be ejected into the air or be vaporized, depending on if there is a track above the space or not. What you have to do is to get the ball on the track below a space in the right wheel.
What are some things I'll have to do in order to get the ball on the exit track?