This unit is Microcontroller based controller circuit to accurately generate pulses to energize the stepper motor winding in the desired sequence. Power Transistor based driver circuit to drive the stepper motor. 5 Seven segment display to set and display the parameters. From this controller we can set the speed of the stepper motor in RPM, set the number of steps the motor can move. We can set the direction of rotation – forward and reverse direction. We can also set half step and full step mode.