Elecman2000
New Member
I wrote an assemply program to generate pulses like this 00110011 and move on the Port, I Connected Four pins to the Damn ULN other Four of ULN to stepper Motor.... I conected 9 pin of ULN to -ve and 10 to +12V which is volt of stepper Motor... The Problem is ULN is Not Working.. The Program is working Fine, i checked with LED's directly from 8051 and working checked from the ULN and Nothing so what is the Problem ?????