Arduino and Stepper Motor

A Switec X27-168 stepper motor wired up to the Arduino. The pointer was moving when I took the photo, hence the blur. The motor's windings only consume about 20mA, so it's safe to drive directly from the pins of an AVR microcontroller -- although it does need protection diodes.

 

There's a software library to drive this type of motor, called Gaugette: github.com/clearwater/gaugette

Done