Uhm, no I was mistaken sorry. I am not using Ryan’s firmware, but the Grbl mentioned in this thread:
I will inform myself better before measuring the current on the steppers. But something odd is going on with this motor getting that hot. Also am aware of motors sometimes whining, but the high pitched gliding scale frequency of this motor while standing still is certainly not the same, and it gets very hot for a reason I am sure. It looks like it is not taking the $140-144 commands correctly. I will ask that question in that thread.