Good news. I've contacted Peter Bogely from reprap.me he gave me the advice to limit the current in oder to get a smooth movement of the motor. (trimming the pot does the job)
I've just tested this and it is now working very smoothly from low speed up to very fast speed.
So my feedback on those 4982 stepper drivers is quite positive.
Alain
I've just tested this and it is now working very smoothly from low speed up to very fast speed.
So my feedback on those 4982 stepper drivers is quite positive.
Alain