Hi all, Sounds quite interesting :) It might also be an idea to provide a home for implementations of other hardware that can drive GPIO pins and can control similar sensors and other devices. I'm thinking of an Arduino, or something like an ESP8266. These are devices that are much simpler (and cheaper) than a Raspberry Pi, but if you are just building a sensor or a simple switch they are often quite useful.
Would that fit with a project like this as well? Cheers, David