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

----- Original Message -----
From: Kerry <kez@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Saturday, April 21, 2001 7:07 PM
Subject: [CAD_CAM_EDM_DRO] Re: PICs as replacements for L297s


> --- In CAD_CAM_EDM_DRO@e..., "Ian Wright" <Ian@i...> wrote:
> > A number of people say they have gone through the torment of
> programming
> > PICs to drive steppers etc., so how about someone sharing their
> knowledge?
> > This is, after all, the purpose of this list and I'm sure there are
> others
> > who, like me, would love to try out a PIC circuit but don't have
> the time
> > (or, in my case, intelligence) to learn the necessary skills to
> program the
> > PIC but who could, nevertheless, build a simple programmer and the
> rest of
> > the driver circuitry if the PIC code were available. I'm not
> suggesting that
> > anyone particularly divulges any 'trade secrets' - there are
> probably dozens
> > of ways the same effect can be achieved, but, in any case, even the
> trade
> > guys may learn how to do 'better, cheaper, faster' from such shared
> > knowledge which would be to the advantage of us all.
> >
> > Ian
> > --
> > Ian W. Wright
> > Sheffield UK
> > www.iw63.freeserve.co.uk
> > ----- Original Message >
> > >
> > > But actually having done it, actually having programmed a PIC as a
> > > replacement for a 297 to drive an L298 ( and others ), I can
> state with
> > > some high level of assurance that it is a non-trivial task should
> high
> > > step rates be required.
>
> If anyone is intrested they can use my PIC code to drive unipoler
> motors in full/half step modes I use it to controle a foam wing
> cutting machein and a cnc router for making pcb's a copy of the
> circuit board in dxf format or gcode will be available soon to make
> your own on your cnc machines. Im having problems getting hold of
> cutters small enough for pcb's ive tride making my own from drill
> bits with limited success. if anyone has info on where to get hold of
> machanical eching bits in the UK please let me know
>
>
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