Temperature is completely wrong (roundabout 10 degrees Celsius)

[rodriogs]

Hi,
I'm experiencing significant discrepancies with my sensor readings. The temperature is offset by approximately +10 degrees, and the humidity values are unusually low compared to the ambient environment. The pressure measurement is correct. I've cross-validated these readings using the board's original factory image and external reference sensors.

[mauringo]

Hello,

The sensor has been created to be used in different operative modes this library is just the bare minimum and incoplete. The sensor works at his best with the companion BSEC3 library from bosch: https://www.bosch-sensortec.com/software-tools/software/previous-bsec-software-versions/

I have 2 demno libs done for personal usage... use at your own risk:
https://github.com/mauringo/BME690-Arduino-lib-unofficial
https://github.com/mauringo/Bsec3-ArduinoLibrary-Unofficial

[rodriogs]

Hi @mauringo,
I am testing your library https://github.com/mauringo/BME690-Arduino-lib-unofficial but I also get temperature offset.
To use https://github.com/mauringo/Bsec3-ArduinoLibrary-Unofficial I need to put libalgobsec.a library on Arduino15 folder right?
Best

[mauringo]

Hello,

Place it in the Arduino libraries folder. The reason is that BME690 in Polverine is close to BMV080 and tyhe processor that heats the board up! you need a compensation table or to connect a Qwiic external BME690 sensor. Polverine values are also compensated.

[rodriogs]

But when I use polverine firmware version on PlatformIO using https://github.com/BlackIoT/Polverine/tree/main/POLVERINE_DEMO
I get right values, maybe they already use a compensation table but i don't see it

[mauringo]

Hello, yes! Polverine has compensation active!