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You should be able to program the PIC chip to count the pulses by using an interupt. The PICs are fast enough to detect the pulse rates that you should require on the robot.
What is your max frequency that you are trying to detect? I may be able to send you example code
Tim Tedrow
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Sr. Design Engineer
Caterpillar Inc.
Greenville, SC
KD4EGM
FRC 281 Greenvillains
Infected with the FIRST virus in 2000
Yes, Chute Door!!!
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