Once his son showed him an Arduino, though ... which he controls with a Polulu Qik serial DC motor controller. In compass steering mode, a Pololu IMU locks in the heading to steer (HTS).

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 ...