Hello all :slight_smile: What is the lower limit of voltage, the Arduino Uno will register on one of the digital pins? For example, a curcuit is connected trough Arduino 5V and GND and have a output at only 0,5 volt. Will the digital input pin register that? Thanks :slight_smile:

Voltage input on digital pin (Arduino Uno)

system May 12, 2012, 7:51pm 3

So if I go below 3V on a digital pin, the Arduino Uno would not register it as HIGH.
Thank you

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