I’ve been on a journey to integrate my Philips Hue lights with my KNX system, and I’m thrilled to share my success! 
The Goal:
I wanted to control my Philips Hue bulbs using my KNX switches, allowing me to create seamless scenes and automate my lighting system. The challenge was figuring out how to bridge the two systems effectively.
The Process:
- Research: I started by exploring how Home Assistant can act as the intermediary. It turns out Home Assistant has excellent support for both Philips Hue and KNX, making it the perfect bridge.
- Setup: I configured my KNX system to send commands to Home Assistant. This involved setting up the KNX bus and ensuring Home Assistant recognized the KNX devices.
- Integration: I created scenes in Home Assistant that correspond to the KNX switch actions. For example, pressing a KNX switch now triggers a predefined scene in Home Assistant, which in turn adjusts the Philips Hue lights.
- Testing: I tested each switch and scene combination to ensure everything worked smoothly. It was a bit of trial and error, but the results were worth it!
Tips for Others:
- Documentation: Make sure to thoroughly read the documentation for both Home Assistant and your KNX system. It saved me a lot of time.
- Start Small: Begin with a single switch and scene to test the setup before scaling up.
- Community Support: Don’t hesitate to ask for help on forums. The community is incredibly supportive and knowledgeable.
Outcome:
Now, my lighting system is fully integrated, and it’s a joy to use! The Philips Hue bulbs respond perfectly to my KNX switches, creating a cohesive and automated environment.
If anyone has questions or needs advice on a similar project, feel free to reach out! I’d love to help others achieve the same success. 
Hi, thanks for sharing this – great write-up and very clear explanation of your setup.
I’m currently designing a new house and I’m on a very similar path: KNX/BAS for infrastructure (heating, floor heating, heat pump, scenarios) and Philips Hue for lighting, mainly for scenes, color temperature, mood lighting and voice control.
Your approach with Home Assistant as the bridge between KNX and Hue is exactly what I’m evaluating, and I have a few questions where real-world experience matters more than theory:
- KNX actuators vs “always powered” Hue lights
In your installation, do you use KNX actuators to physically cut power to Hue lights (for example when you leave home), or are the Hue circuits normally kept ON and the actuators used only for special cases (vacation / long absence)?
I’m trying to understand if daily power-cycling of many Zigbee devices caused any delays or re-join issues when coming back home.
- Toggle logic vs absolute ON/OFF commands
When mapping KNX switches to Home Assistant scenes, did you rely on toggle logic, or did you implement explicit commands (e.g. one button always ON, one always OFF)?
My concern is de-sync scenarios, for example when lights are controlled via Google Home or the Hue app and the KNX side is not aware of the current state.
- Responsiveness when re-powering Hue devices
If you ever cut power to the Hue lights via KNX, how was the behavior when restoring power?
Were all lights immediately responsive, or did you notice Zigbee mesh recovery time that could be annoying in daily use?
- Home Assistant vs KNX supervisor
Did you consider using a KNX supervisor (e.g. Ikon) to talk directly to the Hue Bridge instead of Home Assistant, or was HA your first choice from the beginning?
In hindsight, would you still choose Home Assistant as the “logic brain” for lighting integration?
My goal is very similar to yours: KNX switches for reliable, predictable ON/OFF, and Hue handling all the lighting intelligence, while avoiding fragile edge cases.
Thanks again for sharing your experience – real installations like yours are incredibly helpful.