[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 ...

Stepper motor systems consist of two basic components: an electric motor and a controller system. During operation, a controller supplies pulses to a driver, which interprets these signals to send ...

[ZeroBacklash] created a little strain wave gearbox (harmonic drive ... a compact design that matches the frontal size of the stepper motor and is only about 27 mm long. [ZeroBacklash] has ...