There are two options to see your messages in MQTT
less than a minute
In general, there are two options. Option 1 is for quick fixes when working with Node-RED flows and Option 2 is more sophisticated.
Option 1: in Node-RED
…the thing with the debugger-node and the debugging-window.
Option 2: using MQTT Explorer
In this article we shortly explain how you can set up all machines and servers through the MQTT-Explorer. This is mandatory to monitor MQTT-messages and troubleshoot if somehow data does not find its way to grafana.
Install MQTT Explorer
Open it and add a new connection
Give it a name and enter the IP address of the MQTT broker (usually the IP of the edge device)