Re: Re: Andy Olney's Comments on PIC-Servo

This sounds great. Can this also be used
to close the loop for stepper system?

I have yet to come up with a machine, let
alone convert it to CNC. But I am saving up
for it, and following these discussions.

Please keep this project going.

Mike Gann

Tom Kulaga wrote:

>
> From: Tom Kulaga <tkulaga@...>
>
> > From: "Dan Mauch" <dmauch@...>
> >
> >If someone will give me a schematic I will build it.
> >Dan
>
> I'll put it together as soon as I get a chance. I assume we'll be
> needing 4 DAC channels to handle the 4 encoder inputs? I guess this
> is best answered by the EMC guys.
>
> OK, so here's what I'm thinking:
>
> - 4 channels of encoder input
> - 4 DAC outputs
> - Fully buffered, and regulated DC supply for encoders
> - 8 bit ISA (would 16 bit be better?)
> - Would a counter-timer chip be useful?
> - Some digital TTL level I/O would be good, but how many channels?
>
> I really want to do this right the first time, so let's get some
> discussion going. If there's a need, we could even make this a 6
> axis board. I'd probably want to make that a 2 board solution (to
> keep us using 2-level PCB's, and keep it HSM repeatable). There's no
> unreasonable requests that can be made on this, but there is a limit
> on just how much you can put on a 2-level board, so we need to make
> sure we have the right gear on there.
>
> -Tom Kulaga
>
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