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, 9:18pm 7

Unfortunately, that didn't help me

It's all there in the data sheet.
In what way didn't it help you?