Installation

This integration is available in HACS (Home Assistant Community Store)

1. Using the tool of choice open the directory (folder) for your HA configuration (where you find configuration.yaml).
2. If you do not have a custom_components directory (folder) there, you need to create it.
3. In the custom_components directory (folder) create a new folder called nodered.
4. Download all the files from the custom_components/nodered/ directory (folder) in this repository.
5. Place the files you downloaded in the new directory (folder) you created.
6. Restart Home Assistant
7. Refresh your browser window (bug in HA where it doesn’t update the integration list after a reboot)
8. In the HA UI go to “Configuration” -> “Integrations” click “+” and search for “Node-RED Companion”

Using your HA configuration directory (folder) as a starting point you should now also have this:

custom_components/nodered/translations/en.json
custom_components/nodered/__init__.py
custom_components/nodered/binary_sensor.py
custom_components/nodered/config_flow.py
custom_components/nodered/const.py
custom_components/nodered/discovery.py
custom_components/nodered/manifest.json
custom_components/nodered/sensor.py
custom_components/nodered/services.yaml
custom_components/nodered/switch.py
custom_components/nodered/websocket.py

Source: GitHub – zachowj/hass-node-red: Companion Component for node-red-contrib-home-assistant-websocket to help integrate Node-RED with Home Assistant Core