Re: [CAD_CAM_EDM_DRO] .9 deg/step motor

jeffdavis516 wrote:

> Does anyone know why a Vextra 8 wire .9 deg per step stepper motor
> would not work correctly with a bipolar driver? I have tried this
> motor with Dan Mauch's 2 Amp driver and it only goes back and forth
> when I jog the axis. I know that the driver works because I tried a
> normal 1.8 deg per step motor and that stepper works fine.

Are you absolutely sure that you have to coils wired correctly? if you
have them wired up to the wrong phases, it will not move properly.
You might start with just half of the coils, and see which ones make
it work right. If you have it wired either in series or parallel with
just one of the windings backwards, it nullifies the flux for that
winding, and the motor will behave just as you describe.

Jon