Dan Michaels wrote:

> >> After dawdling for months on this project, I finally got around to
> >> designing my PIC botboard - which we talked about some time ago.
> >> Basically, a PIC-based replacement for the 68HC11-based botboards.
> >........
>
> >Preliminary info at:   http://www.oricomtech.com/bot40.htm

>
> Thanks for the feedback, guys, both onlist and offlist.
>
> No room on the present board for ICSP.


Ouch!! That hurts... Really hurts. Especially for
most of the target markets like small bots which
need to be re-programmed all the time.

All you need is three wires, VPP,SDA,SCL on a tiny
3-pin header. Then just tie MCLR to +5v with a
47k resistor. Your board can be powered from it's own
+5v supply and the common GNDs can be connected.
All my small projects have this 3-pin ICSP header,
and we use the Picstart to program them. A 4-pin
header (including GND) is even better but you're
the one with real estate issues... ;o)

Are you saying you can't fit a 3-pin SIL header
(and one 47k resistor) anywhere on that big board??
So I would have to glue one on and run wires to
the PIC pins??
;o)

-Roman

PS. The op-amp circuit looks great!
PPS. Are you re-subscribed yet?? What happened?

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