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Message

Re: DIY CNC pcb drilling

2012-04-11 by Andrew

DJ, what advantages do the BDC motors have over steppers? And what mechanism did you use for feedback to determine when to start and stop?

--- In Homebrew_PCBs@yahoogroups.com, DJ Delorie <dj@...> wrote:
>
> 
> "Boman33" <boman33@...> writes:
> > On your link below it talks about steppers, I did not see anything
> > about the brushless DC motor controller.
> 
> I don't own any steppers, I don't know why any of my links would talk
> about them.  The BLDC link talks about the brushless DC motor
> controller; it *emulates* a stepper by accepting standard step+direction
> signals like stepper-based CNC machines use.  The firmware counts the
> step pulses and rotates the servo motor to the correct position.
> 
> > controller page: www.delorie.com/electronics/bldc/
>

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