It could be the bob but it may be your PC. So if you have a scope and look at the signal
along the way you could possibly find the source.
BLENDER FILLED WITH GRAVEL SOUND
The sound of the stepper is a good tool. If a stepper gets hot ( maybe because of a current
setting ) it will sound and behave funny and hopefully noticed before that burnt smell is sensed.
Mrs stepper is getting a mr nice pulse and walking like a champ,
but some Kremlin dosn't care for mr nice pulse and also throws some pulses at mrs stepper, some hard, some soft, sporaticaly.
Now mrs stepper is still walking along and the mr nice pulses are stronger and keep mrs stepper walking
along.
The Kremlin pulses are hitting mrs stepper somehwere during the walk and all they can do is
bonk against the stide.
The bad pulses give mrs stepper a ringing in her heart and can cause walking problems and sometimes even making her stop and sit down.
You really don't want the technical version!
RICH