Once his son showed him an Arduino ... he calls knob steering, a potentiometer drives the existing hydraulic pump, which he controls with a Polulu Qik serial DC motor controller.

The Arduino source ... 3D printer based around these ‘DC motor stepper motors’ which we will watch with interest. While we’re on the subject of closed-loop control of DC motors, here ...

Maxon Precision Motor's ESCON 50/5 OEM module is a 4 quadrant Pulse Width Modulated (PWM) servo motor controller that can efficiently control permanent magnet brushed DC motors (PMDC motors ...