Mesuring current with pic

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  1. - 21st November 2008, 21:39 #1
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    mitchf14
    mitchf14 is offline Junior Member
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    Red face Mesuring current with pic

    I found this circuit to measure current with a pic, it seems like a good circuit that will work, using adcin reading the voltage at the high point of the 0.1 ohm resistor. Hence knowing the voltage and the resistance you can calculate the current that is all fine and dandy, my only concern is that @ 12 v running trough a 0.1 ohm a 5 w resistor would no be at all sufficient. I would need a big heat sink and even then is there something i am not seeing, or is the circuit wrong.
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