Debouncing button or switch inputs on microcontrollers can be a challenging ... For those wanting to try this out, [stockyu] has included some example Arduino code for others to use.

(Google Translate) The wiring for this project is about as easy as you’d expect: the buttons connect to the digital inputs on the Arduino, and the LEDs on the digital outputs. When the Arduino ...

You can read the state of a button using Arduino and a few lines of code ... const int pinButton = 8; void setup() { pinMode(pinButton, INPUT); Serial.begin(9600); } void loop() { int stateButton = ...