Rainwater system 25cm = 300 liters in the main IBC total capacity is 1700 liters using both front and back roofs to feed my whole house, 15cm is empty longest stretch off grid has been 9 weeks. converted from Arduinouno with ethernet to esp32c3 devboa

ESP32-based IoT system measuring water level in a rainwater storage tank and sending data to ThingSpeak.

Rainwater tank monitor with battery powered ESP32 and ultrasonic sensor