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