You will need the Arduino Board, a 560Ω resistor, and LED and the code example below. We set the pinButton variable as integer 8 and we connect the button at pin 8 on the Board. Then the LED is ...

If you’ve run out of I/O pins ... an Arduino. But this concept is directly applicable to any microcontroller. And it should be quite easy to use an ADC interrupt to drive all of the button ...

I made this Arduino 8 bit binary led counter as ... function (in our case we trigger the interrrupt when pin 2 is low). Here you can read more about it. In the count() function we debounce the button ...