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Re: chronograph
You might adapt one of the many low-cost pinewood derby timing circuits to measure ball speed. Some display time and you could use a two lane timer and use the differential time to calculate velocity. Some of these circuits are very simple, and use a PC parallel port & a program to do the hard work.
__________________
Richard Linn
Proud father of Marine LCpl. Karl R. Linn
Co-founder Team 975
KIA, Iraq 1/26/2005
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