Shawn Ellis wrote:
>
> Well, The schematic is in Autocad DWG and its kind of ad-hoc, so I hesitate
> to tarnish my rep by sending this nasty thing out...  but if you can deal
> with DWG or DXF I'll be glad to Email it to ya!  Yeah, that sensor problem
> was a different system which I plan to optically isolate, this system is
> interfaced to a device which holds the I/O line high via a separate power
> supply (in the PC)  and that always puts a few extra millivolts on my
> power-off.  Should I perhaps use a diode/relay/analog switch to turn off
> the I/O when power is off?  I hope the optical isolation helps with the
> other problem... mabye thats what I could do here as well.... But I DO need
> something extra, because even with everything unplugged, the system STILL
> holds enough voltage in the filter caps to screw it up even over-night!
>
> >
> > Can you send me a .GIF or Protel schematic which shows where this extra
> power
> > is coming from AND getting coupled back into the PIC ? Or how about an
> ASCII
> > representative schematic ?
> >
> > Rgds
> >
> > Mike
> > Perth, Western Australia
> >
> > There is no a'priori reason that the ultimate truth will be interesting
> > or even useful, those moments of frustration during philosophical debate
> > would be replaced by the sheer terror which accompanies true knowledge.
there is allways a better way as reading this list makes clear.May I
also have a copy of the dwg. tony@magicnet.net