
Noisy Fidget Spinner
thingiverse
https://youtu.be/jmfi4QjAoL4 A high-pitched fidget spinner with a compact DC motor generates a loud whirring sound. For those who need to modify the motor or bearing dimensions, the OpenSCAD files are conveniently attached. The pitch of this fidget spinner is controlled by the amount of pressure applied. No pressure at all results in a very high frequency.
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