MQTT Transitioning from oh2 to oh3? /properly define a MQTT switch item?

[rpwong (Russ)]

Here are some good tutorials on setting up MQTT via the UI.

[OH3] MQTT Setup and Configuration

Overview In order to use MQTT devices, the following is required: An MQTT broker installed MQTT Binding installed in openHAB MQTT Bridge Thing configured in openHAB This tutorial was written with openHAB3 running on a headless Raspberry Pi 3B with Raspberry Pi OS, with SSH access. Method 1. Install the MQTT broker Install Mosquitto On the Raspberry Pi, perform the following commands to install Mosquitto, and ensure it runs when re-starting the Pi: sudo apt install mosquitto sudo systemc…

[OH3] Tasmota relay via MQTT (Sonoff Basic with optional DHT22)

Foreword This tutorial is for openHAB3. If you are on openHAB2 you will need to use my older tutorial. This tutorial was written with openHAB3 running on a headless Raspberry Pi 3B with Raspberry Pi OS, with SSH access. Overview This tutorial assumes you have openHAB3 installed. This tutorial will show you how to: Install an MQTT broker, install the MQTT binding, and connect the two Setup device to read the DHT22 temperature sensor Setup device to connect to the MQTT broker Configure openHA…