When I moved houses I also upgraded from openHAB 2 to openHAB 3 and have noticed some funny stuff happening with the Xiaomi Gateway 2 Temperature, Humidity and Pressure sensors (the square shaped ones).
I used to log these values every 20 minutes, however now they get logged every time they change on openHAB 3. I have noticed that when looking at historical values that sometimes I see invalid readings.
For example:
- Temperature values show as “-100”
- Temperature values show as “100”
- Relative humidity values show as “654.36”
- Pressure values show as “0”.
Looking at the device, it only supports a specific range for reading data, so these values can’t be possible.
In a few cases I’ve noticed that this occurs when the device looses power or connection to the bridge. I am wondering if anyone else has noticed this in their setup as well?
At the moment I have created a MySQL stored procedure that I run manually that removes these invalid values from the persistence data. I will probably look at submitting a fix to ignore readings outside of the valid range.
