The I2C bus is a two-wire serial bus for connecting a wide range of ICs to a computer or micro-controller:

  • wikipedia [1 ]
  • article con LinuxJournal [2 ]
  • I2cTcl for Tcl/Tk on LINUX [3 ])
  • See the presentation from Uli Ender
  • You can find an example to write to a LCD with an I2C interface using Arduino here: Firmata
  • One more interesting article [4 ]