Built from a smallish old Zanussi Fridge/Freezer combo. It is 52-53 cm wide and about 120cm high. Got it for free from someone who had replaced the fridge in their cabin. It is hust big enough for my build and as small as possible to not take up too much space in my cellar.
12v transformer for the fan
Main control box
Running a wire through the wall. Old simple fridge with all cooling open in back and no danger of cooling liquid in the wakk (at least so I thought). 12mm drill
120mm pwm fan
Controller currently placed on top
60w Tubular heater bellow the carboy
Had to cut of part of the door to enable the carboy to fit in the small space. The door became a bit mor “wobbly” but still works,
Main control box now fitted with contacts for the temp probes.
Network is run using Powerline from the apartment to the basement. Works just fine (as long as the phases as the same).
I am pretty happy, only downside is that with thhttps://community.brewpi.com/t/small-fridge-built-into-a-fermentation-chamber/2137/4e current prices of copper i ended up using some red wire I had lying about instead of bying propper red, black, blue, brown and yellow/green cable…
Just thought I should add a part list:
- One fridge. Older is easier as running wires through the walls are easy if the cooling is visible in the back (take care still… Listen for noice. Check the internet)
- One 60w tubular heater. They are great, waterproof and not too expensive.
- One Raspberry Pi (preferrably with wifi)
- One power supply for Raspberry - the 2A in the store works great
- One high quality micro usb cable to connect the pi and the spark
- One Brewpi Spark (with photon)
- One wall mounted OneWire temp probe for the fermenter
- One ordinary OneWire temp probe to meassure inside the fridge
- One ordinary OneWire temp probe to meassure room temp (not actually necessary)
- 2 10A SSRs. One to switch the fridge. One for the heater
- A OneWire SSR expansion board. If you connect the SSRs to this and the temp-probes inside the fridge. You only need one RJ12 (or RJ11) cable from the Spark and inside the fridge.
- Decent transformer for the fan
- One fan. Look into the “hamster cage”-fans Elco speaks about
- Some good connectors to connect the power wires. I prefer Wago connectors
- Cable shoes to make connections to SSRs etc fit
- One tool to crimp the cable shoes just right
- Water proof boxes to protect connecting cables, SSR’s etc.
- Lots of cable
- 2 RJ12 panel mount coupler (in the store) makes connecting and removing temp probes easy
- I used 2 30 cm RJ12 cables to connect between the SSR expansion board and the RJ12 panel mount coupler.
- 1 21mm hole punch to make the necessary hole in the fermentor
- PS! If you only use SSRs and temp probes, you can freely switch betwwen RJ11 (4 wires) and RJ12 (6 wires) as only the middle four leaders are used.
I think I remeber all the parts. If there seems to be something missing, feel free to add to the list