I recently embarked on a project to set up a smart heating system using Eurotronic Spirit actuators with PID control. It was a challenging journey, but I learned a lot along the way. Here’s my experience and some tips for anyone considering a similar setup.### The GoalI wanted to automate my home heating system to maintain comfortable temperatures while minimizing manual intervention. The system needed to handle multiple rooms with different heating requirements and integrate seamlessly with my existing smart home setup.### The SetupI decided to use Eurotronic Spirit actuators for their compatibility with Z-Wave and their ability to be controlled via OpenHAB. The actuators were paired with Xiaomi Aquara temperature sensors for accurate room temperature readings. The Raspberry Pi 3B+ served as the hub, running OpenHAB with the necessary bindings and rules.### Challenges Faced1. Node Disconnections: Initially, I struggled with frequent disconnections of Z-Wave nodes, especially during peak usage times. This was resolved by adding two NEO Coolcam Z-Wave outlets to ensure consistent power supply. 2. Overheating Issues: The Spirit actuators would occasionally overheat rooms due to slow response times. This was addressed by switching to a PID controller for more precise temperature regulation.3. Battery Issues: Using rechargeable batteries caused inconsistent performance. Switching to alkaline batteries significantly improved reliability.### The SolutionThe PID controller proved to be the game-changer. It allowed for precise control of the actuators, ensuring that rooms reached the desired temperature quickly without overshooting. The system now includes:- Virtual Temperature Calculation: Combines readings from both the built-in thermostat and external Xiaomi sensors for accuracy.- Manual Override: Users can adjust temperatures manually, which resets the PID controller to adapt to new settings.- Scheduled Updates: Ensures the actuators receive regular updates to maintain optimal performance.### Lessons Learned- Battery Choice Matters: Invest in high-quality alkaline batteries for Z-Wave devices to avoid unexpected disconnections.- PID Controllers Are Essential: For precise temperature control, especially in rooms with large windows or high thermal mass.- Regular Maintenance: Keep actuators clean and ensure they are properly calibrated to prevent overheating.### Final ThoughtsWhile the setup required significant time and troubleshooting, the end result is a reliable and efficient heating system. It’s been a rewarding experience, and I’m confident this setup will serve my home well for years to come.If anyone has questions or suggestions, feel free to reach out! I’d be happy to share more details or help troubleshoot issues.