Using the optical sensor from a ball mouse

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  1. - 5th September 2007, 10:58 #3
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    lsteele
    lsteele is offline Junior Member
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    Ok,

    I've tried replacing the 20k resistor with 1M (largest I have to hand), and the results are much the same - a clear voltage swing when just connected to my voltmeter, but almost none when also connected to the pic.

    Have I understood your suggestion correctly? I've attached a (crude) diagram of my setup.

    Incidentally, I tried shielding the sensor from ambient light, but there was a negligible difference in readings.

    Thanks again!
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