Is it there some way to reduce current when stepper is in idle for longer time?
I have CNC with DQxxx stepper driver and works all fine with cold motors. (they drop current to 1/2 after 0.5 second of silence in step pin)
But now I build other machine and use smoothie to control it. And after some tests motors is hot. And current is set as should be. (I did measure current if something is wrong but it's fine).
There are A5984 on the board. And Sleep pin just cut power to motor. So not that functionality by chip itself.
But smoothieboard has digital potentiometers to adjust current. So that can be done by software.
Just don't know if that is already done.