Hey everyone, I’m running into an interesting issue with my OpenHAB setup, and I’m hoping someone might have some insight or a solution. I’ve been using OpenHAB for a while now to monitor various aspects of my home, and one of my favorite setups is tracking the daylight levels outside using a WS Helligkeitssensor. It’s been working great for the most part, but recently I noticed something odd with the chart display.
The sensor itself is working perfectly—it accurately measures the light levels throughout the day, from the bright sunlight at noon to the dim glow at dusk. However, when I look at the chart in OpenHAB, instead of seeing the expected range of values (which should be between 0 and 100,000 Lux), the scale on the left side of the chart shows numbers like 4E4, 5E4, and 6E4. At first glance, it looked like some kind of error code or technical jargon, but after a moment, I realized it was just scientific notation for 40,000, 50,000, and 60,000 Lux. While I understand what those numbers mean, it’s not exactly user-friendly, especially if I want to share this data with someone who isn’t as tech-savvy.
Here’s a quick breakdown of my setup:
- Sensor: WS Helligkeitssensor
- Chart Configuration: I’m using the default MySQL service for the charts, with different time periods set up for viewing historical data (1 hour, 12 hours, 1 day, etc.).
- Issue: The scale on the chart is displaying values in scientific notation instead of the standard numerical format.
I’ve tried a few things to troubleshoot this:
- Checked the Item Configuration: The item is correctly configured to display Lux values, and the sensor itself is reporting accurate measurements.
- Reviewed the Chart Settings: I’ve gone through the chart settings multiple times, but I can’t seem to find an option to change the number format.
- Searched the Forums: I did a quick search on the forums, but I either didn’t find anything relevant or the solutions mentioned didn’t apply to my setup.
I’m really hoping there’s a simple fix for this, whether it’s adjusting a setting in OpenHAB or modifying the chart configuration. If not, maybe there’s a workaround or a custom solution someone has implemented. I’m not entirely sure if this is a bug or just a feature that hasn’t been fully fleshed out yet, but it would be great to have a more user-friendly display for these values.
If anyone has experienced something similar or has any suggestions, I’d love to hear from you! Let’s keep the conversation positive and collaborative—this is a great community, and we’re all here to learn and help each other out.
Thanks in advance for your time and input!