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    BME688 giving wrong reads after awhile

    BME688 giving wrong reads after awhile

    Radu
    New Poster

    Hello everyone, 

    I have a little problem with my new bme688 sensor. Sort breaf: I need to use it for temperature, humidity and pressure, to monitor a grow room. I took this sensor in hope to replace my currentDHT22( as I need pressure measurement as well, DHT22 have only temp and hum). My problem starts after some time, over 30 min, around a couple hours, of good readings my sensor suddenly give 195C and 100% humidity and seems to never come back to normal readings again. I'm using "sSense_BME680.h" library( - https://itbrainpower.net/downloadables/ssense_BME680_example.ino, from here)  and arduino Due. It seems I can't make  BSEC or BSEC2, it won't compile on my Due even if I do the steps from github( - https://github.com/BoschSensortec/Bosch-BSEC2-Library, this one).

    i2c breakout that I'm using - https://itbrainpower.net/sensors/BME688

    8 REPLIES 8

    BSTRobin
    Community Moderator
    Community Moderator

    Hi Radu,

    We haven't tested third-party software. The reference example is this one on GitHub: https://github.com/BoschSensortec/Bosch-BSEC2-Library. It is recommended to migrate the reference code to your platform and run.

    SterlingMinsha
    New Poster

    I have encountered a similar problem recently, and I am trying to solve it

    If only that code will work.

    Running the basic example is giving me this error: Library BSEC_Software_Library has been declared precompiled:
    Using precompiled library in C:\Users\d_rad\Documents\Arduino\libraries\BSEC_Software_Library\src\cortex-m3
    The platform does not support 'compiler.libraries.ldflags' for precompiled libraries. I've dont required steps shown here - https://github.com/BoschSensortec/BSEC-Arduino-library. With or without editing 'platform.txt', the result is the same. That's why I've used that third-party lib and code...that did work but not for long.

    BSTRobin
    Community Moderator
    Community Moderator

    Hi Radu, SterlingMinsha,

    As you used BME688, you need to use BSEC2 project. Download software from:
    https://www.bosch-sensortec.com/software-tools/software/bme688-software/
    or
    https://github.com/BoschSensortec/Bosch-BSEC2-Library

    First, refer the readme file: https://github.com/BoschSensortec/Bosch-BSEC2-Library/blob/master/README.md

    On my ESP8266 platform, I had the following mofication:

    Picture1.png

    Picture2.png

    Picture3.png

    Copy esp8266 version libalgobsec.a lib into SDK lib folder.

    Picture4.png

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