4 layers38.5 × 39.2 mmDriver boardslimcdk/wisweepESP32 and Trinamic based closed-loop stepper controller58 parts14MIT
2 layers81.3 × 45.7 mmSequencermatiasmicheletto/openscad-oil-pumpjack3d models and electronics for a variable speed scale pumpjack6 parts9GPL-3.0