Gutters to Gardens is a solar powered rain barrel for remotely or automatically activating a water distribution system for home garden beds.
A 500W+ solar charge controller. It can charge a 12V batteries with+40A. Want wireless? No problem!! the Seeed Xiao ESP32-C3 has your back..
The idea is to basically monitor our rooms continuously and if no one is present in the room, the system will turn off the lights and fans.