I am really bad at updating this project and a few things have changed since the last update. I got all the parts in for the miniaturization of the fermtroller and wired it all up. It looks god awful as I'm reusing the original project box and it's all hacked up. The good thing is everything worked really well except for my wifi connection. The Wifi has become very unreliable and I'm wondering if I may have damaged by BBB at some point when during a brew session it got sprayed with some hot wort. Other than that I'm quite happy with the rebuild. The Prototype Cape I picked up really simplified the wiring in of the temperature probes and made everything much more solid and not prone to falling out when I moved the box like the old setup. Moving to the smaller integrated Relays also simplified the external wiring and things look much cleaner.

Going forward I think I'd to do a custom 3D printed box and I'd like to add a Screen which allows manual override of the Web Setting and shows the temperature graphs as well. If anyone has a good touchscreen they can recommend for the BBB I'm open to suggestions.

On the software side of things I'm looking into implementing a PID algorithm for the temp control. The trick is I need a pretty wide deadband as you don't want to be cycling a AC unit every few minutes as it is really hard on the compressor, I'll be playing around with this over the next little while to get it tuned for my setup.