How about a grid of IR emitters and detectors? You just have to detect
which beams have been broken. From what I remember, piezo's can kick out
quite a bit of voltage when struck sharply.

Josh
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Micro Eng wrote:
>
> Looking at detecting where something is hitting onto a target and could be
> with quite a bit of force (think of a baseball being thrown at a target).
> 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.

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