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  1. A

    Voltage when changing from input to output

    Thanks. That's clear now.
  2. A

    Voltage when changing from input to output

    I'm not sure I understand you. I don't want to drive it HIGH, just LOW, but I want to make sure I control when it goes LOW. Perhaps I just don't fully understand how an output pins works. When I use pinMode for output, does it start driving an output immediately, or does it wait for a...
  3. A

    Voltage when changing from input to output

    Assuming there is nothing external driving the line, I want to know if there is something I can do in order to make sure I can control what it is. Lets assume, for example, that I'm using an input pin with an internal pull up to connect to a device that is activated by the line going low...
  4. A

    Voltage when changing from input to output

    I'm connecting GPIO pins to a bus, where some of the time they're used as inputs, and some of the time they are output. Is there a way to know what would be the voltage between the pinMode(pin,OUTPUT) and the digitalWrite(pin,value) (even if it is a fraction of a uS)? I wouldn't want to get an...
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