I've seen a few different methods of measuring the bubble rate, but actually just measuring when the water level rises and touches the 2 wires seems so simple and easy :) You might even be able to use it to control the temperature based on how well the yeast is doing.
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Great! The site doesn't seem to be up though?
I'd love to see the beer monitor... I've been considering doing something similar too - although mainly just for the temperature control side.
Have you seen this? http://community.spark.io/t/fermenting-beer-bubble-counter/2523
I've seen a few different methods of measuring the bubble rate, but actually just measuring when the water level rises and touches the 2 wires seems so simple and easy :) You might even be able to use it to control the temperature based on how well the yeast is doing.