Kombucha Maker Project with CircuitPython and Feather - Kombucha doesn't brew very well in the winter time. It is slow and inconsistent (and really not very good). I purchased a heater some time ago thinking that would fix the problem. Unfortunately it kept the culture too hot causing the culture to be imbalanced and the tea to be mehh. So, with the help of a temperature sensor, a Feather and a regulatable AC adapter I was able to write some simple python code to create a kombucha thermostat. Check it out on my blog.