This circuit was on another Web Site, but the Web Site is GONE. It's a good thing I downloaded this project.
As the temperature changes, the LED's change color. When you see RED, you need to find out what's wrong!
Sorry, the one thing I don't have is the PCB Layout-- notice that a PICAXE-18X SMD was used on the bottom of the board.
Cooler Manual (Wordpad File)