There are a lot of fun projects you can do with stepper motors ... do anything to drive the motor. Others have a case ground wire. Steppers have either 4, 5, 6, or 8 drive wires so if you have ...

you’ve probably run across more than a few stepper motors. These motors come in a variety of flavors, from the four-wire deals you find in 3D printer builds, to motors with five or six wires.