Stepper motor is an important tool to achieve mechatronics, through the transformation of electrical energy into mechanical energy, generally used to provide the power of the machine to work, no matter what kind of machinery can be used. Automatic LED package dispensing machine is controlled by the stepper motor to provide work, not only make the dispensing operation speed and no noise pollution has a steady course, glue and other characteristics, is an important power supply system. The general three axis dispensing machine is also used for stepper motor power control, XYZ work direction is the use of stepper motor control, the advantage of this is that the three axis mobile orientation more accurate. Of course, stepping motor as the power system also has some matters needing attention, and servo motor, automatic dispensing machine LED package of stepper motor in the work before the need to return to work, return is mainly to make the stepper motor can better determine the working position by encoder without having to repeatedly establish the starting point of homing if not, the encoder stepper motor in power will cancel the origin.