Stable Temperature Monitoring with Fibaro Sensors

Hi everyone,

I wanted to share my experience with the Fibaro door/window sensor paired with a DS18B20 temperature sensor. I’ve been using this setup to monitor the temperature inside my fridge, but I’ve encountered some instability issues with the temperature readings. I thought I’d document my journey in case others are facing similar problems or looking for solutions.

First, I want to acknowledge how impressed I am with the Fibaro sensor’s reliability. It’s been rock solid for other applications, but when it comes to temperature monitoring, I noticed some irregularities. The readings would fluctuate even when the fridge was stable, which was a bit concerning. I started by checking the sensor’s placement and ensuring it wasn’t too close to the fridge’s cooling unit, which could cause interference.

After some research, I realized that the issue might not be with the sensor itself but rather with how it’s configured. I decided to dive into the settings and found that adjusting the reporting interval made a significant difference. By increasing the interval slightly, I reduced the noise in the readings and got a more stable temperature display.

Another tweak I made was to implement a simple averaging algorithm in my home automation system. This helps smooth out any sudden spikes or drops in the temperature data. I’m using Home Assistant, and it was surprisingly straightforward to set up a script that averages the readings over a short period.

I also reached out to the community, and some members suggested using a temperature compensation technique. This involves placing the DS18B20 sensor in a way that it’s less affected by direct airflow from the fridge. I ended up insulating the sensor slightly and positioning it away from the cooling vents, which improved the readings considerably.

I’d love to hear from others who might have encountered similar issues or have tips for achieving stable temperature monitoring. It’s been a bit of a learning curve, but I’m happy with the progress so far. The fridge is now consistently monitored, and I can keep an eye on its temperature without worrying about false readings.

Thanks for reading, and I hope this helps someone else who’s dealing with similar challenges!

Best regards,
Rich