This is AVR-GCC code for a EMSL Art Controller modified to thermostatically control the output relay. A TC74 temperature sensor turns on the relay when the temperature rises above the set point. The relay can be connected in Normally-On mode for heaters or Normally-Off mode for coolers or fans.

Designed to be used with the Art Controller relay board from EMSL http://www.evilmadscientist.com/2012/artcontroller/ Requires a TC74 temperature sensor connected as follows:

|Vdd | PB3| | --- | --- | --- |SCK | PB2| |GND | PB1| |SDA | PB0|

PD1 is the TX output of the UART used for debugging. Don't close the X60 switch or the X10 switch!

This code has been adapted from the EMSL Art Controller code, and includes a bit-bang I2C code based on this blog post by "Raul"

More information on the hardware can be found at this blog post on rotormind.com

the main file is in arttherm.c