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 ...

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

Because of the affordability and seeming ubiquity of the Arduino platform, they have been hard at work this last month trying to get their Geiger counter sensor board for an Arduino out the door.

The new EasyFerm Plus ORP Sensor expands Hamilton's successful Arc line, which has revolutionized process measurement by eliminating the need for transmitters. Arc sensors communicate directly with ...