Decoding rotary switches

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  1. - 28th March 2009, 17:57 #4
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    mister_e
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    You can probably use 1 ADC line for each rotary switch (or mix all of them, then feed it to a single ADC input). Basically you convert BCD to voltage with R2R resistor ladder, then you feed this output to your PIC.

    Hardware technique
    http://ww1.microchip.com/downloads/e...tes/00234a.pdf

    8-pin PIC - Tips 'n Tricks
    http://ww1.microchip.com/downloads/e...doc/40040b.pdf
    Last edited by mister_e; - 28th March 2009 at 18:10.
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