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This is a persistence of vision fidget spinner. You can right words, numbers, metrics, all using light as it spins. There is an instructables on this already, which contains more information on the parts required: https://www.instructables.com/id/POV-Arduino-Fidget-Spinner/ Also required to print some bearing caps where the magnets are installed.

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Bio: M.a.Sc in Mechanical Engineering. Pretty much designing a new circuit board every day, and I have made a few inventions of my own ... More »
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