Re: [CAD_CAM_EDM_DRO] Basic stepper control question

Tom,

Sounds like you are going to have to find the stable positions of the
stepper and restrict the control to moving to one of them before
powering down. I would have thought there are 200/revolution, but
maybe there are only the fifty you can feel.

One certain thing: none of the 2-phase-on positions are stable, as
they position the rotor halfway in between where either phase alone
would want it.

I'd suggest you put a long pointer on a motor shaft, get a bench
supply set for appropriate current, and run the step sequences by hand -
power the winding, then disconnect.

Chris

--
Christopher C. Stratton, stratton@...
Instrument Maker, Horn Player & Engineer
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