A simple robot impact sensor would do...
--------------+------- +vcc
*            *
--------------+------- TO PIC
Two pieces of metal with insulators at the end... one wire on each plate..
voila! vary the thickness and size of the plates to adjust sensitivity.

On Thu, 9 Jul 1998, Rock Thompson wrote:

> In an effort to further the athleticism of my children, so they can
> someday be filthy rich and support their kindly old father, I am
> building a wooden target for them to throw a ball at.
>
> I want to count the number of times the ball hits the target.  A PIC
> will count the number of hits and handle an LED display.  But I'm
> hoping for suggestions on how to detect the hits.  Two things come to
> mind: An accelerometer responding to the vibration of a hit, or a
> microphone that picks up the sound of a hit.
>
> Any further ideas or comments?
>
> Thanks, Rock
>
>
>
>
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