These three are learning to program in ROBOLAB.
When the gear projects are ready they will have them move in response
to a touch sensor.
Gears need to mesh to move others. The one on the axle turned
is the driver and the other is the follower.
Large driver makes the small gear move faster.
24 tooth gear meshes with 40 tooth. 16 meshes with 16 but not any others.
5 of the gears are in the gear train and 1 is not.
Now the test. Program works! Gears move and stop.
An eggbeater's gears turn at right angles and speed up the motion.