nice Mikey! Good seeing your project posted here!

I made a temp controller for a chest freezer for my kegerator. I made it with all analog components, comparators etc. It was cool and it was like 5-10$ in parts. But it requires a separate power source for the DC.

I finally just bought a LOVE temperature controller, and wired it into the chest freezer. Now I have two chest freezers that I can reprogram and also displays the temp, they both run on AC input so you really only need 3 wires, Hot in, hot switched out, and neutral to both power the temp controller and switch on the compressor. Also, these cost about $50, the same price as this is being sold for….

Nice. I was looking into buying a pid temperature controller off of ebay to do sous vide cooking.

This is very cool. With winter coming it would be awesome to have a controller like this, but with a tweak to open a vent if the air outside is cooler than the room air. That way it would really cut down on the electricity needed. The controller would still be able to kick the fridge on if it got warm out again.

Built something like this to keep my corny kegs cold too. Yes, a compressor delay is essential to avoid smoking your freezer (learned the hard way when my freezer kept stalling – fortunately it survived). There’s no need to use outdoor air, as cool as that sounds – chest freezers are extremely efficient, and even more so when running low temp differentials as a fridge.

Only problem was, my chest freezer did not like being a fridge – humidity constantly built up in it for some reason and it was always swampy – since I like to keep my beer around 5C, the sides and bottom (submerged in 2″ of water after a month) always grew mold, despite regular applications of bleach. Gross.