(Project for work) Vacuum control board for a industrial printer with membrane keypad and 4, 7-segment digits for a menu system.
Network Enabled Raspberry Pi Sous-Vide Cooker
Heater from kettle, metal pot, hole in pot, gasket from kettle, relay from junk drawer, raspberry pi, wi-fi dongle, optoisolator to transistor to mains relay, adafruit waterproof temperature sensor, and software