[Frank Herrmann] had an interesting idea to turn a geared DC motor into a servo motor assembly, but with a stepper motor-like interface. By stacking some small PCBs behind the motor body ...

Hobby servos are nifty and useful for a wide range of projects. There’s nothing stopping you from building your own servos though, and you can even give them nifty features like 360-degree ...

This interaction is closed loop, as the drive constantly monitors the position and velocity of the motor and reacts accordingly. In the past, servo drives relied on specialized communications media ...