Control any high voltage (240V, 15A) load whilst monitoring two external sensors and current drawn by load. No additional PSU needed.
A Roomba and invisible walls controlled by Photons triggered from anywhere in the house to vacuum one of multiple areas.
Used in a coffee roastery as part of a larger system, but can easily be adapted for control needs. A lot of control in a small form factor.
This small little program will tell you who won whichever state you want to know about, complete with percentages displayed on 8 LEDs.