Monthly Archives: April 2019

A Planetary/Harmonic Hybrid Gearbox

I recently saw this amazing idea from Darren Schwenke on Which is (so far as I know) a brand new type of gearbox, inspired by a well known concept called a  “Harmonic-Drive“. Harmonic drives have been around for … Continue reading

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Unwisely driving 17 stepper motors from a bare arduino

This is a quick and dirty way to get a whole bunch (up to 17) small stepper motors working off a single arduino, with no extra circuitry whatsoever. Why would you want to do that? Maybe you want to make … Continue reading

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