TWILCD

The TWILCD is an easy to use 16x2 LCD display that is controlled using the TWI (I2C compatible) protocol.

It is super-easy to control with any microcontroller that supports the TWI protocol. Libraries for Arduino and avr-gcc are available onGitHub.

The library is compatible with the Arduino LiquidCrystal library, so any sketch you have that uses a standard 16x2 LCD display (with 10 wires connected) can be converted to use the TWILCD with only 4 wires with only one single line of code change.

Only four wires are required for operation, one for power (runs on both 3.3V and 5V), one for ground, and two for the TWI protocol.

Akafuino X

The Akafuino X is a microcontroller board based on the Atmel XMega32A4 microcontroller.

The Akafuino X can run Arduino sketches. It uses a special version of the Arduino IDE that adds support for the XMega line of processors. See the XMegaduino projectfor more details.