I’ve spent this and the last weekend soldering together a bunch of circuitry that I can use to control my beer brewing process. I have built three calibrateable temperature sensors and two circuits to drive two different relays. There will then be connected to an Arduino that will be the brains.

The temerature sensors will be used to measure the temperature around my beer and the relays will be hooked up to the fridge that the beer fermentation will be taking place. The other relay will drive a lamp that I can use to heat the inside of the fridge.

I am planning on either making a webpage or an instructable showing exactly how it’s all done and set up some kind of github or sourceforge project with the code for the Arduino.