I've set up my Smoothieboard yesterday with 4 external stepper drivers (DQ860MA).
vimeo.com / 117061243
Unfortunately one of the stepper drivers stopped working after I've changed the microstepping settings.
To make sure its the driver i swaped 2 drives and the error moved with it.
I opened the cover to check that there is nothing blown up but everything looks fine!?
Even the LED indicator shows green and not red.
Has anybody an idea what i can check or where the problem can come from?