Cool project! I recently did roughly the same, publishing to the MQTT server on my Raspberry Pi, which will be the 'backbone' of my home automation system. It's

Cool project! I recently did roughly the same, publishing to the MQTT server on my Raspberry Pi, which will be the 'backbone' of my home automation system. It's insane how cheap you can get these parts off Ali Express and the likes. I powered it from a programmer for now sticking out of a powered USB HUB (probably not so wise!), but ordered a few sub-dollar 'power' modules to try out as well.