RTFM!

Este artigo é a parte 2 de 4 da série  Xbox Adaptive Controller

Great work Microsoft!

I now have 19 inputs that I can use with whatever I want.

Digital inputs are easy: just connect a switch. Any kind of switch, including LEGO RCX touch sensors.

But 4 of them can be also be analog… and no documentation at all to tell me what voltage levels I can use and if there is any kind of internal protection.