The best place for an always spinning sphere driven by solar energy, is in a glass jar. A moving thing is an ideal toy for cats or other pets and a jar gives some protection. The electronic driver circuit and the mechanics consists of just a few components. The styrofoam ball with a sharp needle as axis, rotates under a magnet bearing. The needle rests against a small glass plate. Four magnets on top of the ball, a solarpanel, a supercapacitor, a coil and a sensor are all the essential parts to keep the sphere spinning for a very long time.
Негізгі бет Continuously rotating sphere in a glass jar
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