Thanx for the advice. WHen I get 'em mounted I plan on using a cable
of 3 or 4 inches (due to other physical constraints.) - about 10 cm
or a bit less. Now I'll definitely try to minimize the length! If I
have to put an Oopic C or S in there I'll just forgo the second R
board completely, since a working C or S would completely replace the
functionality anyway.
I also take it the higher value pullups stand a better chance of
working. When I get this all assembled I'll post a followup on my
results.
Thanx again!
P.S. I think your Guinness is safe... for the time being.
--- In oopic@yahoogroups.com, ooPIC Tech Support <dennis.clark@...>
wrote:
>
> I've played with this problem for off and on for a while it seems
and
> can't find any good explanation or reasoning. You should be using
2.7K
> to 4.7K for even short distances (measured in single digit
centimeters)
> but it simply won't work between any two ooPICs that use the
16F877a
> processor and I just don't understand why. Putting an ooPIC S
board in
> the circuit fixes it, so that left out cable length, noise in the
wires
> or just bad connectors. If anyone can figure out why this happens
I
> offer up a 4 pack of Guiness Draught cans as a prize!
>
> DLC
>
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