can u tell me how i can calculate delay generation for stepper motor if i have 1.8 degree stepper motor and i want to make a such proggram that it rotat by 20 rpm in both direction, then how will i calculate delay plz send me prrogram according to 8051
well 1.8 deg/step and 360 deg, so 200 steps * 20 per minute. you do the math
erik