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    Okay....then the question other way round.... ...

    Okay....then the question other way round....

    What is the INPUT_PULLUP parameter exactly doing in the teensy...(internal wiring a pullup resistor) ? Is this only for inputs ?

    Thank you
    ...
  2. Replies
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    Hm....okay.... had the same question..also for...

    Hm....okay....

    had the same question..also for CS signals for SPI...or digitalRead switches switching to ground....are there external pullup resistor needed or will the INPUT_PULLUP in the pinMode...
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