Stepper motors are a mainstay in precision control systems, valued for their simple open-loop operation and high torque at ...

allowing an Arduino Uno to control up to three stepper motor gauges simultaneously. The movement of the needle is amazingly smooth and quite fast, as seen in the video after the break.

grbl is stepper motor controller ... for the normal drivers included on grbl Arduino shields (or integrated Arduino+drivers equivalents), and so I have been considering designing my own to link to ...