I like coffee.
I find James Hoffmann crosses over into my interests pretty well as a person on youtube, and surprisingly, ends up crossing over into the educational realm, and so, an impromptu introduction about PID controllers.
Worth a watch:
One of the first 'IoT' devices was a controlled coffee pot, watched by a webcam or something. Probably controlled over RS232, one that now monitors the pressure and temperature too? That feels like a level-up.
Kinda want one. It doesn't already exist, right?