>I'm thinking that Piezo sensors could be used in a quadrant type setup,
>such that the PIC would detect the voltage from each sensor (how
big/small >can these be) and determine where it hits.


The output of the detector can, for the most part, always be amplified
by external circuitry. The big thing is how much resolution do you want
this thing to have? The Smaller your detector and the larger the number
of them the better resolution you will have, but the more irksome the
design will be. So you need to figure out what size area you want to
detect the baseball hitting. Then you can look at how much area that
various Piezo sensors will cover and figure how much overlap the
detectors will have and do some sort of coincidence type measurement of
which sensors give a signal when they hit a certain area. That's all I
got, I hope it is helpful.=20

Charles K Roberts II
ORNL-SNS Project

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