If I wire a simple momentary push-button to an ATmega32U4 and am using the internal pull-up resistor, do I need an additional resistor to limit current?According to the datasheet, the internal pull-up...
I'm building a hinged box where I'd like to trigger some leds in the box to turn on when the lid is opened, then off again when closed. My first thought was using a hall effect sensor. Is this...
