*
* Relays 1 to 4 are respectively wired to pins C4, C5, C6 and C7 of the Teensy++ V2,
* which are the PORTC bits 4 to 7 of the AT90USB1286. The relays MUST be wired through
*
* Relays 1 to 4 are respectively wired to pins C4, C5, C6 and C7 of the Teensy++ V2,
* which are the PORTC bits 4 to 7 of the AT90USB1286. The relays MUST be wired through