Sous Vide / PID Temperature Controller Case

_This is 95% finished, and usable as-is, but has a few small warts that could be cleaned up_

Case for a common [PID](https://en.wikipedia.org/wiki/PID_controller) temperature controller used for immersion cooking ([sous vide](https://en.wikipedia.org/wiki/Sous-vide)). Using the parts below, you can create a temperature controlled heating element for maintaining a very tight temperature range on the target system.

This replaces an oxy clean box I'd been using for almost 5 years.

For example, if I have the setup pictured (large pot of water, single immersion heater, aquarium pump), It will keep the temperature within ~0.5F of the target in my experience.

I also frequently use a small slow cooker plugged in to the controller instead of the immersion heater when I don't need a lot of volume (1 or 2 steaks vs. a brisket).

This controller could be used for more than sous-vide. Build a flowerpot smoker and control the electric heat plate. Temperature control an animal habitat.