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    pulsin command returning zero problem (Car Tachometer Project)

    Hey. I'm trying to read the value of the tachometer signal on my 4cylinder car from the ECU. I fed the line into pin 1 of a Picaxe 8M and am using the pulsin command to read the time inbetween each pulse to then ulimately use to derrive the rpm. I'm having a problem however. I read the value...
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