Can you tell us what each button does? It looks like we went from 3 buttons to 2 but there are the 2 bottom rectangle buttons. Will those be usable in games? Or are they to access the gamebuino's menu and stuff
No, home is not rebindable because it should always behave the same. Or else the user will not be able to exit the game or adjust volume. The "C" button of the Gamebuino Classic is now called the "Menu" button, and you can do whatever you want with it.