A hardware hacker reverse-engineered the proprietary serial protocol used by the Waterdrop G3P600 smart RO water filter faucet. The four-pin connector turned out to carry a simple 9600 baud serial link at 5V, transmitting data on filter health, water quality, pump status, air temperature, and faucet state. Using this knowledge, a custom PCB was built to integrate the system with Home Assistant via ESPHome, enabling full home automation control and monitoring of the RO unit.
57 Impressions