View Full Version : interfacing a stepper motor by 8051 microcontroller

12-05-2005, 12:49 AM
i am designing a circuit on controlling a stepper motor by a 8051 microcontroller which uses 12MHz oscillator , and a driver chip ULN 2003
to protect the microcontroller from the back emf produced by the motor .

so i am looking forward to any suggestion regarding the crcuit design.

12-05-2005, 01:44 AM
The circuit is very easy, u just need to connect ground to pin 9 and pin 10 to +ve. Stepper, connect common to pin 10. the rest u can see from uln datasheet.