> >how can i use pic series to driving microstep stepper motor? > >Hmm. Out of curiosity, can you use PWM on the windings (instead of an >analog voltage) to microstep a stepper, or do inductance issues make this >impossible by the time you get to a frequency high enough to actually >avoid "jittering" the motor? > >BillW > Hi, this thread came up a little while ago, and it was pointed out that most commercial stepper controllers do just that. The main reason being that it reduces the heat dissipated in the semicondutors. Keith. ========================================================== Keith Dowsett "Variables won't; constants aren't." E-mail: kdowsett@rpms.ac.uk WWW: http://kd.rpms.ac.uk/index.html