Digikey sells mechanical RPGs (PN P10859-ND) that I'm playing
with as a user input device.  The data sheet suggests pulling
the two NO pins high through 10k, and then to ground
through 10k in series with a .1uF cap.  I'm finding that by
doing so, I'm getting a lot of bounce, causing two edges at
once every, say, 5-10 encoder ticks.

If I boost the cap to 10 uF, that kills the bounce, but then
I end up with a horrible RC decay.  It's not so bad that it
keeps the RPG from working correctly, but I'm worried
about constantly having PIC pins at analog voltages for a
few ms at a time, since that puts the CMOS drivers in that
active range where current flows (datasheet does
recommend against that, but doesn't say much else).

Does anyone have any sage advice on using this little guy,
other than "Buy an optical encoder!"?

Mike H.

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