Interesting, I actually just bought a brand new Rev 8 from Soigeneris.com, to replace my Rev4 unit because I “thought” something was wrong with it. I installed the new model, and I noticed my disable switch was actually the failing issue here, not the drive.
Now why I’m posting is this. My steppers are dead-quiet with the Rev4 drive, but with the Rev 8 drive, they’re very noisy and squeal quite a bit. Is this due to the changes in the unit from Rev4? I already have an email in to Marris, but thought I should post about it to all of you in case some of you are experiencing the same thing?
Thanks,
Dave