Arduino based grove ORP prometheus exporter, that can be easily integrated into home assistant. It allows you to remotely measure the ORP value of your pool or hot tub, providing a good indicator of ...

A sketch for Arduino Uno Wifi Rev. 2 emulating pH, ORP, and temperature sensors that sends values to an MQTT broker like mosquitto for Home Assistant - VynDesign/pool-assistant-mock ...

If you’re going to develop another Arduino-compatible board these days, you might as well take a “kitchen sink” approach. The Smart Citizen Kit piles it on, including Wi-Fi, an SD… ...

Sensors for pH, ORP, and temperature are immersed in pool water flowing through a bypass pipe that runs between the filter and the pump.

In this article, I have added three sensors with Arduino UNO and user can choose the required sensor with the help of keypad.