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Rotellino - Battery Free Contactless Bike Light

by DarioCose

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bike dynamo eddy current generator magnet bike dynamo eddy current generator magnet

Rotellino is a cheap DIY bicycle light, *simple to build and battery free*.

Rotellino creates electricity almost frictionless because it uses the variation of the magnetic field generated by the wheel rim (Eddy current) to make a rotor rotate with 6 neodymium magnets and generate the current needed to power 2 LEDs.

More information : https://www.instructables.com/id/Rotellino-3-Battery-Free-Contactless-Bike-Light/
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