This device will automatically lock any kind of pet door using two different methods.

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.

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.

This small little program will tell you who won whichever state you want to know about, complete with percentages displayed on 8 LEDs.