RSeries I2C is +5V vs NXP standard of 3v3.
The NXP standard, like the NunChuck connector is 3v3 VDC.
However to power the I2C FX Modules, we used 5VDC so that one 4 wire cable can
do both the I2C and the power to the other Arduino UNO.
Currently there is no plans to move this to 3v3 volts. If you need to interface
a 3v3 I2C device, please consider using AdaFruit's $3.95 4-channel I2C-safe
Bi-directional Logic Level Converter - BSS138,
http://www.adafruit.com/products/757
Original issue reported on code.google.com by michael....@mac.com on 4 Apr 2012 at 4:38
Original issue reported on code.google.com by
michael....@mac.com
on 4 Apr 2012 at 4:38