> Why don=B4t you simply use 20 pins of a PIC, with pull-ups, and a
> grounded slider?

That's a thought. The processing PIC in there at the moment is a
16F88 and I was trying to multiplex a diode array as a decimal-to-
hex converter but it hasn't really 5 usable pins left without a lot of fuss.
Track selection is an after-thought addition (clients eh ?, bless 'em). As
it is now it starts at track 1 and just wraps around after track 20. If the
F88 is swapped for A PIC with one more port (eg F876) the multi-
plexing idea would work or a 40-pinner could do it on a one-to-one
basis

wbr

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