Portal 2 ’s very best gag comes at the start of the game, in its tutorial stages, and spins Portal ’s game-design satire into ...

Switches and push buttons need debouncing. It is straightforward to do this with software, using a library. The advantages of the Switch library are: External pull-up resistors are not required.

This library implements non-blocking functions to detect button actions, ensuring each action is debounced to filter out input noise on the button pin. The library can handle multiple buttons. Button ...