Hi all :) so i am building a 3d printer of my own. So far i have Sanguinololu 1.3a and extruder with 1 stepper motor. I think i programmed the chip on the board properly. When i test the heat bed and extruder temperatures i am able to reach them and the board is controling this temp. When i connect the stepper motor to the board i see behaviour that concerns me. What happens is that i can move the motor in one direction with the smaller steps. If i try the bigest step or reverse i hear some whistling sound from the motor itself. I wonder if this is due to lack of voltage. I have connected the board to 12V pc power supply as i think it should be. Any advise will be appritiated.
PS. Could it be a driver issue? I bought the stepper mottor drivers with the board itself.
PS. Could it be a driver issue? I bought the stepper mottor drivers with the board itself.