Smbus arduino mega - Arduino - I2C over CAT5 cable - YouTube
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The Arduino Due has two I2C TWI interfaces SDA1 and SCL1 are near to the AREF pin The Wire library uses 7 bit addresses MEGA 2560 board has pullup.
This is the method and code I used to communicate with the smart battery over I2C with an arduino mega 2560. I was able to communicate over I2C at 5v.
Video embeddedIf you are using an Arduino Mega, SDA is pin 20 and SCL is 21, 22 Responses to Tutorial: Arduino and the I2C bus Part One.
Communicating with bq20z80 via i2c from via i2c from an Arduino I understand now about the speed of the information transfer between i2c and smbus.
Usage. Using the I2C device library is actually very simple, especially if you're using the Arduino IDE. You can use other development systems, but you'll need to.