Ahh... well, I looked at the schematic for the arduino board the OP is using and it appears that it has a level translator built in so the signals should be 3.3V. A pretty nice (but expensive board) actually.
Ahh... well, I looked at the schematic for the arduino board the OP is using and it appears that it has a level translator built in so the signals should be 3.3V. A pretty nice (but expensive board) actually.