Hey everyone, im new to the forum. I came here to seek help running stepper motors with my arduino. I have a 6 wire unipolar SM, ive isolated the different coils with my ohm meter and this is what ive done so far... the stepper hookup connector is (red,brown,blue,yellow,white,white), red/brown/white = one coil with center tap, blue/yellow for the other. Ive hooked it up with a ULN2003A.... O1 = Red O2 = Brown O3 = Blue O4 = Yellow with whites on common.
and the arduino at 1,2,3,4 to the ULN2003A at I4,I3,I2,I1
I ran a simple program in arduino that pulses... 1000 0100 0010 0001 The stepper takes two steps forwards and two steps back. Ive reversed the motor coils and it still does the same thing, ive reversed the logic inputs and still the same result. Im really having a hard time with this, anyone have any suggestions? I'm kinda stumped on where i should go from here...