Originally Posted by DGibb
I'd love to hear how you're building a ferm chamber for $50 as I am looking to do something similar.
Also, I noticed that you're in Middletown, DE. I have family there!
It's probably doable if you already have an old refrigerator. I had a refrigerator where the defroster heating element died. I simply removed it, and replaced the control circuitry with an Arduino, a few relays, and two temperature probes.
I use the old fridge side as a ferm chamber, and the freezer side as a kegerator. It would be nice if the two sides were independently adjustable, but as it is, it's about perfect for doing ales. I could do a lager if I removed the keg from the keg side so it doesn't freeze.