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    BNO055 calibration issue

    BNO055 calibration issue

    theaddies
    New Poster

    I have my sensor calibrating fine.  It outputs gyro = 3, mag = 3 and accel= 3.  But the sys output will stay at 0.  I thought that the sys output was solely based on the output of the other 3.  I have had the sensor working fine up until yesterday.  Once I would get the 3 x 3s the sys value would quickly hit 3 and everything was all set.  I can't figure out what I might have done or what happened.  I assume this should not be happening with all 3s and a sys of 0.  TIA.

    5 REPLIES 5

    BSTRobin
    Community Moderator
    Community Moderator

    Hello theaddies,

    Is the sensor data expected?

    Can anyone please help me with this issue?  I get very quick calibration for a, g, and m but the system value stays at 0.  Over on Adafruit someone pointed me to the link below.  they said there is an error in the firmware.  Is this true?  I tried removing the sys ==3 condition from the "!fully_calibrated loop".  While the remaining code continued to run it seemed as though it was not calibrated as the compass wasnt working.

    https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BNO055-Calibration-Staus-not-stable/m-p/...

    BSTRobin
    Community Moderator
    Community Moderator

    Hello theaddies,

    Sensor calibration status is 3, indicating that the data is credible. Is your actual sensor data normal?

    I would say that the data seems not normal when the sys value is not 3.  But there is nothing that will change sys=0.  It is just stuck at 0 with the other sensors all at 3.

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