Stepper
The Wiring Stepper motor library allows for easily manipulating a standard unipolar or bipolar stepper motors connected to the Wiring hardware pins.
A Stepper motor is a special kind of motor which can be turned very precisely (in steps) in any direction. All other activity will stop while motor is turning.
Stepper
Class for manipulating stepper motors connected to the Wiring I/O board pins.
setSpeed()
Sets the speed in rpms of a stepper motor.
step()
Makes the motor to turn a number of steps.