It had to come to this. For his entry into this year’s Hackaday Prize, [Sean Hodgins] created a persistence of vision fidget spinner. This isn’t just any PoV fidget spinner — this is the ultimate in ...
[XTronical]’s idea for a laser-based persistence of vision gadget failed, but the basic idea seemed sound. A row of inexpensive red lasers shine into a spinning mirror and are reflected onto a distant ...
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