Making a custom arcade cabinet has become something of a rite of passage for aspiring hackers. As seen here, maker Rodrigo decided to add an extra bit of “flair” to his build (Portuguese), with buttons that light up under Arduino power. 

As demonstrated in the video below, the button lights slowly fade out after being pressed, and he’s created a pair of these light-up control boxes, one featuring blue buttons and the other red.

Notably, he’s using a separate controller to pass signals to his setup, leaving each Arduino free to control the lighting. Code for the project can be found on GitHub if you’d like to try something similar yourself.