I have some standard A4988 Drivers in my Kingprint KFB 2.0 Smoothieware board on my delta printer.
For some reason, I'm just getting a high pitched whine noise when trying to move the motors.
Right now, 4.2v is being outputted from each driver (This is the minimum), and upon adjusting the current, the pitch just gets louder and turns into a static noise (similar to what you'd hear on a tv when you're not on the right channel).
Edit:
It is using all 3 jumpers for stepping modes.
Any advice?
Thanks,
Jack
Edited 2 time(s). Last edit at 01/28/2018 06:46PM by JackD.