Hey everyone,
I’ve seen some great projects where folks have set up advanced lighting systems and three-way switches in Home Assistant using Node-RED, and I got inspired!
I wanted to create an easier way to manage these configurations without diving deep into YAML or JSON manually. Specially if a project has so many devices that needs to be turn on and off in both ways.
So because of that, I have developed a Python Flask App that generates this Node-RED JSON with a mapping from your devices. It’s so much less manual work, which is a plus for me 
This web application streamlines the process of creating virtual three-way switch setups and virtual parallel switch setups within Home Assistant using Node-RED, by setting the source and target entity:
You can also set if that map, should be a Three Way:
After everything is done, click on Run Main Function button to generate a Node-RED Flow JSON:
So when you import this JSON into Node-RED, you will see the magic happening and will look something like this:
Feedback and Contributions
I’d love to hear any feedback you have and welcome contributions. You can find more information and download the project from my GitHub repository: guimatheus92/node-red-homeassistant-three-way
Thanks to everyone for the inspiration, and happy automating!