Re: [CAD_CAM_EDM_DRO] Re: PICs as replacements for L297s

Why? Several PIC's have analog comparitors. That's all you need to do a
chopper drive.
It will even generate an interrupt when the output changes. So you get an
interrupt when you go over your current setting and another when it falls
below. Perfect for a chopper drive.

later,
Larry E.

----- Original Message -----
From: "Tony Jeffree" <tony@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, May 08, 2001 12:34 PM
Subject: [CAD_CAM_EDM_DRO] Re: PICs as replacements for L297s


> At 16:10 08/05/2001 +0000, you wrote:
> >Just wondering how Larry Edington is coming in his project using PICs
> >as replacements for L297s. Things sounded like they were moving fast
> >and furious a few weeks back.
>
> I can see that there might be mileage in using PICs to convert step &
> direction into full phase control signals; however, using a PIC to emulate
> the chopper control aspects of the 297 seems to be a non-starter.
>
> Regards,
> Tony
>
>
>
>
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