Not having one, what do you do? If you are [Tech Build] you go all MacGyver on an old printer and pull out a stepper motor. How does a stepper motor turn into an encoder? Well, that’s the ...

it was possible to squeeze a DRV8837 DC motor driver and a pair of hall effect sensors on the first PCB layer, with the magnetic encoder nestled tightly behind it. Pin headers at the edge of the ...