Easy to build, with carved construction instructions
Solar or hand cranked operation
Operate under indoor lighting conditions
Equipped with 7 3/8-inch steel balls
The Solarengine circuit in the Solarbotics solar pinball machine stores the light emitted by the solar cells and releases it in occasional pulses to drive the mechanical device. Under sunlight, the motor pulses every few seconds and throws a ball every half minute. Under indoor lighting, the motor pulse will decrease to every few minutes (please be patient). But you can always use the hand crank to manually push the pinball wheel. This kit requires basic soldering tools (soldering iron, solder), Phillips screwdriver # 1, and a small amount of white glue.