In node-red all nodes can display status information on the admin UI.
In this video we look at using capturing and using this information in a flow.
This is especially useful with nodes like MQTT where we don't want to publish data if we don't have a connection.
To do this we need to a the status node into the flow.
You can get the status node to monitor multiple nodes or just a single node.
When it detects a status change in sends a message.
It is also important to realise that the status node will only send a message when the status changes which is another important reason why you should capture it using a context object.
In the video I forgot to mention that you can disable status information from appearing in the settings. It is enabled by default.
Tutorial on Site
https://stevesnoderedguide.com/using-the-node-red-status-node
Flow used in video is on download page
http://stevesnoderedguide.com/download/node-red-status-node-flow-video
Related Videos
How to Store Data In Node Red Variables
https://youtu.be/kNfP1vw2Img
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Using the Node-Red Dashboard Switch Node
https://youtu.be/P6MyTXEb71I
Node-Red Using the Status Node for Flow Control
https://youtu.be/_Si7A8XuCZA
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