This is a Forebrain-controlled mini-fridge turned sous-vide cooker project. I didn’t put any buttons into the project, so everything is controlled over USB (target temperature, PID tuning, LCD backlight). Because Forebrain has built-in USB-HID functionality, no drivers are needed! The control app is written in Qt.
If there’s significant interest in the project, I’ll make an instructable and release the sources on Github!