Fermentation fridges

To ferment at controlled temperatures I use two fridges. To save space these are placed on top of each other. Both can be used for cooling and heating.
The temperature sensor is placed just above the tap behind a sponge to isolate it from the environment.
The old type bubblecounter is placed on the left outside the fridge.

As heating element I use a 25 Watt ceramic heater with an E27 socket in one fridge and a 50 Watt  type in the other fridge.

Including the new Balloon Carbon-dioxide production sensor.
The Tcontrol-IO board can be seen in the lower left corner.

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