I’ve been working on a project to integrate a lux sensor into my smart lighting system using Node-RED, and I wanted to share my experience and some tips for anyone looking to do something similar. This setup allows my indoor lights to turn on earlier if the room becomes darker than usual before the scheduled time, which is especially useful during the changing seasons when daylight varies so much.
Initially, I set up a basic flow in Node-RED to control my lights at specific times using the built-in time triggers. It worked well, but I wanted to add an extra layer of intelligence by incorporating a lux sensor. The goal was to have the lights activate earlier if the room wasn’t bright enough, even if it was still daylight outside.
Here’s what my current flow looks like:
- A time trigger node set to turn the lights on at sunset.
- A function node that checks the lux sensor readings.
- A conditional node to compare the current lux level to a predefined threshold.
- A switch node to decide whether to turn the lights on immediately or wait for the sunset trigger.
The biggest challenge was figuring out how to layer the lux sensor data on top of the existing time-based automation without causing conflicts or overriding the sunset trigger unnecessarily. I found that using a combination of function nodes and switch nodes helped me manage the logic effectively.
After some trial and error, the system now works seamlessly. If the room becomes too dim before sunset, the lights turn on early. If it’s still bright enough, they wait for the scheduled time. This integration has made my home lighting system much more responsive to actual conditions, and it’s been a great learning experience working with Node-RED and smart sensors.
I’d love to hear from anyone else who’s worked on similar projects or has tips for improving this setup further. Happy coding and happy automating!