I2C

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

• wikipedia [L1 ]
• article con LinuxJournal [L2 ]
• I2cTcl for Tcl/Tk on LINUX [L3 ])
• See the presentation from Uli Ender and Uli Ender bitbang I2C with Arduino
• You can find an example to write to a LCD with an I2C interface using Arduino here: Firmata
• One more interesting article [L4 ] "I2C Hacking Demystified"
• I2C bitbang with lpttcl