Teeter totter drive
thingiverse
I designed this project for my grandchildren. A slender man sitting model was downloaded from thingiverse.com/thing:1184270/files. To print the two pieces, I scaled up to 150%. A single drop of glue is all it takes to connect them. My stepper motor is a low-cost, geared one that runs on 5 volts.
Download Model from thingiverse
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