Duet maestro Driver Expansion underpowered?

[dc42]

@beej said in Duet maestro Driver Expansion underpowered?:

awesome that worked It's homing and everything is moving in the right directions.
The steppers are sounding a little grinding, i'm not sure if that's quite the right word.
But they aren't running as smoothly as they have been, would that have to do with the interpolation, or current...?

There is a design issue on the 2-driver expansion board (which was not designed by Duet3D) which sometimes causes the P6 driver to run a little rough, but does not affect the P5 driver. So if it's just the motor attached to P6 that sounds rough, this could be the reason. See https://forum.duet3d.com/topic/16124/duet-maesto-stepper-driver-expansion-schematic/24?_=1629705413513 and the following posts for the remedy.