The best place for a rotating sphere, driven by solar energy, is in a glass jar. The electronic driver circuit and the mechanics consists of just a few components. The styrofoam sphere with a sharp needle as axis, rotates under a magnet bearing. The needle rests above against a small glass plate. Four magnets on top of the sphere, a solarpanel, a supercapacitor, a coil and a sensor are all the essential parts to keep the sphere spinning for a very long time.
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