Stepper motor is electromagnetic devices which can convert digital input pulse into rotation or linear incremental movement of the implementation, widely used in the production practice in various fields. The main objective of this design is the completion of the stepper motor control. SCM AT89S51 is the core of the control systems,12864 pairs of used motor LCD status, speed display, SCM Timer pulse power distribution and stepper motor drive circuit comprising the flooding ULN2003 actuator, with software to control the motor speed, direction. LCD12864 as LCD interface, through a combination of keyboard and set the motor running laps, speed, have a good human-computer interaction, improve the availability of the system. The design use C language programming and modular design, enhance readability, achieve a motor movement control functions.
Keyword: Stepper Motor, SCM ,LCD Display,C language