Design of the 42M-1.8D Stepping Motor Control System Based on AT89S52

Designed an automatic control system of 42M-1.8D motor,which can be widely used in the atomic force microscope.In the course of the motor rotation,by sending commands through the serial module,control microcontroller,acquire 0V ~ 5V voltage signal and sent to the computer,real-time monitoring of change of voltage signal,and ultimately automatic cut-off motor in the reference voltage.The system can be combined with a variety of atomic force microscope.