The I2C/TWI pins on the Micro are on D2 and D3. For Arduino beginners, these two boards are nearly interchangeable, especially when used in simple circuits like the Arduino's built-in examples.

It then moves on to AVR territory showing how to setup the I 2 C in an AtMega micro controller. The author uses a pretty standard to most of us Arduino, with software written in AVR C and a nifty ...