Wax_heater_tiny is an Arduino project to build a thermostatically controlled heater. It is designed to use a ATtiny microprocessor instead of the usual Arduino ATMEGA processors, so this will not work on a standard Arduino.

It makes use of the TinyWireM library for I2C communication. This library can be found at http://www.scenelight.nl/?wpfb_dl=22

It also uses the Tiny_LEDBackpack library found here: http://github.com/millerlp/Tiny_LEDBackpack

The wax heater project is described in more detail here: http://lukemiller.org/index.php/2012/10/attiny84-led-display-and-heater-project/