This project is about creating an incubator which will be able to oscillate temperatures in a controlled manner. The idea behind is to create as friendly environment for the microbes as possible with the aim on cultures which are composed from many different microorganisms with different temperature optima. The goal is to keep the cultures like kombucha, kefir etc. as biodiverse as possible aiming to improve the vitality of the culture, it's probiotic qualities and also it's taste. The prototype should be based on arduino control element, temperature sensor and simple heat source like air heater or aquarium heater. I believe that because of the climate conditions in Ireland, this piece of equipment is essential for success of larger fermentation movement.