− | If you want your additional devices to send or receive information from the AVR, you will need to connect them to one or more of the AVR’s I/O pins. The pin assignment table in Section [[lists all of these pins]] and how they are used. Many of the I/O pins are already being used for some other purpose on the board, but there are 8 free I/O pins: 0, 1, 5, 12, A0, A2, A3, and A4. Any of the free I/O lines can be used as basic digital inputs or outputs; each pin also has some special capabilities. | + | If you want your additional devices to send or receive information from the AVR, you will need to connect them to one or more of the AVR’s I/O pins. The pin assignment table in Section [[Pololu-Romi-32U4-Carte-Broches|lists all of these pins]] and how they are used. Many of the I/O pins are already being used for some other purpose on the board, but there are 8 free I/O pins: 0, 1, 5, 12, A0, A2, A3, and A4. Any of the free I/O lines can be used as basic digital inputs or outputs; each pin also has some special capabilities. |