Fidget spinner generator using a single neodymium disc magnet which is generating a static magnetic field and a coil iron-less from a syncronous motor 230 V Ac.<br><a target="_blank" rel="noopener noreferrer" href="https://www.youtube.com/watch?v=dc5Kiq-984Q">https://www.youtube.com/watch?v=dc5Kiq-984Q</a>