/diy/ - Do It Yourself

>>1592589
Here a simple schematic.
Digital pin is being pulled high from the + rail on the arduino through a 10k pull up resistor, so reading that pin will give a HIGH state.
If the button is pressed the pin is pulled to ground and reading it will give LOW
but like i said, since 10k resistor drops a ton of voltage, then the pin will never read high in the first place, even if the button isn't pressed, since the resistor will drop like 4V a pull the pin to only like 1V