>I have spent so long solving this problem, it has driven me crazy. I hope it
(snip)
>both the pull-up and the base resistor were
>10k, which if you ignore the base emitter drop of the transistor, was acting
>like a potential divider.

I would like to propose a name change for Microchip, Inc.,  to

  Microchip(RA4=OpenDrain), Inc.

Hmm, that might freak out the plumbing profession.

Barry

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