I have a few projects in mind to add to the home assistant.
Irrigation I have some moisture sensors still to implement, once I figure out how to maximize the existing cat5e cable to the solenoids. I have most of the parts ready to start. I did consider moving the relays to the solenoid end, but simplicity is more attractive. I'm investigating a 1-wire (actually uses two) solution to talk to the sensor. Wireless might also work.
Weather Station I have a 3D printer, so this could be a good addition.