Stepper
Stepper motors move in fixed increments, which makes them useful when you need repeatable positioning.
Attach stepper motor (2 pins)
Attach a two-pin stepper motor.
Attach stepper motor (4 pins)
Attach a four-pin stepper motor.
Set stepper motor speed
Set the stepper speed in revolutions per minute.
Step stepper motor
Move the stepper a chosen number of steps.