BrewPi 2.0

Finally got chance to start putting together my next upgrade to BrewPi. I want to log the bubbles passing through the airlock during fermentation. The black horseshoe shaped thing on the foreground is a photo interruptor which I hope I can use to detect when a bubble passes through. At the moment it is able to count how many times I insert my finger in the gap, and even how many milliseconds it's there for. But bubbles are going to require a bit more adjustment.