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This flow demonstrates how to emit an voice notification to a Google Home smart speaker when the byte value of a KNX device changes.
This flow uses:
- realknx-in
- googlehome-notify (googlehome-notify-nj4 before 2018 Q1)
googlehome-notify : Sends a notification (a string) to a selected Google Home smart speaker.

Note: do not set the option « Convert output to boolean: » in the realknx-in module for an « AUX-1 byte »
Configuration:
- From the Menu in Node-Red (hamburger), select Configuration Nodes
- Select “GoogleHome-config-node” enter the IP address of the Google Home
- Open the « set msg.payload » and modify the text that will be sent to GH.
How it works:
- when the state of the AUX changes, the Google Home speaker emits a message
Download Code: learning-google-home-input-aux.json
How-to import: Video Tutorial