Sure, button “A” of my remote control handset outputs the 24-bit code “001000011110001001100010” (2220642 in decimal), as revealed exactly by the Arduino setup, but with a spurious “0” at the end ...

My daughter likes buttons. She's learning letters. I was bored over winter break and had these parts laying around... so I built her a "Button Box" based around an Arduino. Open source, hackable ...

You can read the state of a button using Arduino and a few lines of code. The actual state is shown in the Serial Monitor window as 0 or 1, 0 meaning the button is not pressed and 1 that the button is ...