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Type: Posts; User: Frank B

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    Oh, that means it indeed works with the inbuilt...

    Oh, that means it indeed works with the inbuilt LED. Seems that the measuring just needs to be 1000 times faster? (us vs. ms)
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    Yes, I remember there were articles in some...

    Yes, I remember there were articles in some magazines, including ELEKTOR about using CMOS memories as camera.
    It is, however, interesting how good a simple LED works as sensor.
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    So, real question : Is there a way to use the...

    So, real question : Is there a way to use the builtin LED on pin13? I suspect, not, because we can't charge the capacitance? Or is there maybe any other effect that can be measured?
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    No you can use any pin. Important is just the...

    No you can use any pin.
    Important is just the direction of the LED. You need to swap "+" and "-" measure the capacitance this way. The "capacitor" discharges slower or faster depending on the amount...
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    ... ok.. I guess it was too easy.. again... my...

    ... ok.. I guess it was too easy.. again... my last question of this kind (turn speakers on) was answered in record time, too :-(



    const unsigned p1 = 17; // LED-Anode
    const unsigned p2 = 16;...
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    Very warm. But it is pure digital. No ADC(?!) ...

    Very warm.
    But it is pure digital. No ADC(?!)

    Oh man I should have used pins without ADC..
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    Hm, so the "garbage" is less when I remove my...

    Hm, so the "garbage" is less when I remove my hands?
    What kind of "garbage" do you think, is it?
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    How does that work?

    A small mini project after work ;)


    How does that work?



    Just a little challenge - without anything to win, just for fun.
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