Water tank level sensor: 4–20mA current loop, ESPHome, and Home Assistant

https://blog.narf.ssji.net/2025/06/30/water-tank-level-sensor-4-20ma-current-loop-esphome-and-home-assistant/

Our house water comes from a rain water tank. I built an ESPHome device, based on an Olimex ESP32-PoE2, to interface a 4-20mA current-loop liquid pressure sensor, and keep track of the water level in Home Assistant.

#clkMode #electronics #ESPHome #HomeAssistant #OlimexESP32PoE2 #waterTankSensor