I just finished my fridge and wanted to share how I went about it. I Just started the fridge for the first time so can't say that it works so far but its the same principle as Hook Daddy's Koolatron.
Thermoelectric wine fridge - Klarstein, Barolo 28 - it was on discount 229€
Peltier dehumidifier - Trotec - from Amazone It was like 29€
Controller - Elitech STC 1000 Pro TH, Its not wifi but I had it at home so it will due.
So I built a little stance for the fridge so I can have a bigger drain and move it around in my tight space.
First action was to try and find an entry point for the dehumidifier and sensor.
I was set on drilling a hole in the back, so started to remove the inner back plate.
As you can see this model has no internal fan. Only a big cold heatsink in the back.
On the right hand side you the thermometer for the fridge.
After removing the screws in the corners I stoped for a sec, and thought about the possible problems with thermal paste and other things I might need to deal with.
So changed my mind and just shoved the cables true the drainage hole.
Pored some water to see if it still goes true and 50ml went straight true, so no issues.
I had to cut the cable for my sensor thou, but that was an easy fix with some Wagu connectors.
I keep all connections outside the fridge so it won't come in contact with any moisture.
I also mounted the sensor in the fridge using some foam thing from some packaging and double sided tape.
Thank you Hook Daddy for sharing your Ideas and knowledge, and every one else that contributes to the Cannabis community.