01-21-2022 12:42 PM
I have three BME680 sensors whose readings you can see below. They are in the same location, so I would expect readings to be within specified tolerances.
You can see that the "yellow" sensor is off, especially with regards to humidity.
I have not seen APIs to apply humidity calibration. Can this be done within the sensor, so that IAQ readings take it into account, and not as a post-reading calculation?
Note the gas readings are also very different.
This isn't confidence-inspiring, but I am willing to try whatever is suggested here.
01-28-2022 01:23 AM
Hello Mayor,
Firstly, if you are using BSEC 1.4.8.0, it's the humidity data you got is already calibrated.
You can check calc_humidity function in bme680.c and it is used in BSEC.
And I saw your result and it's within our spec.
The accuracy tolerance is +-3% r.H.
Thanks,