[Frank Herrmann] had an interesting idea to turn a geared DC motor into a servo motor ... provide all that is needed to read the encoder, control the motor rotation and listen on the ‘stepper ...

Brushless DC (BLDC ... the field-oriented control algorithm and encapsulated it into a compact Arduino library, added a host of examples, and minted a stackable BLDC motor control shield to ...

Permanent magnet dc motors need a chunky inductor ... engineering was to do two things: get this controller and motor running again, and then add an electrically-safe interface to allow remote control ...