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    BME280 Data to test Calculations

    New Poster

    BME280 Data to test Calculations

    Hello,

    Could someone please send me some the raw calibration values, and the raw register values for the Temperature/Pressure/Humidity for the BME280.

    With also the correct calculated Temperature/Pressure/Humidity readings?

    I would like to test my calculations as I think my pressure calculations are incorrect.

     

    Thanks!

    8 REPLIES 8
    Community Moderator
    Community Moderator
    New Poster

    Re: BME280 Data to test Calculations

    Thanks for the link. I had seen (and used) the excel form already. What I needed was the Raw (Hex) data which is returned from the BME280, unfortunatley the sheet does not have this.

    The issue I have is that the BME280 returns a high pressure reading, the form also shows this so it is not my calculations. Is the sensor faulty?

    The temperature is correct, and humidity I don't have anything to check against.

    The Raw values are:

    Calibration:

    0x6C, 0x6E, 0x77, 0x66, 0x32, 0x00, 0xA8, 0x92, 0x27, 0xD5, 0xD0,
    0x0B, 0x6F, 0x18, 0xCA, 0xFF, 0xF9, 0xFF, 0xAC, 0x26, 0x0A, 0xD8,
    0xBD, 0x10, 0x4B, 0x65, 0x01, 0x00, 0x14, 0x0B, 0x00, 0x1E

    Temp/Press?Humidity:

    0x55, 0x33, 0x80, 0x81, 0x7F, 0xB0, 0x79, 0x13

    Calculations are:

    +24.44°C
    1148.38hPa
    54.17%rH

    Settings are:

    0xF5 = 0b10101000  ' Config Setting (1000ms Standby, IIR Filter @ 4)
    0xF2 = 0b00000010  ' Humidity Setting (x2 Oversampling)
    0xF4 = 0b01001011 ' Temp/Pres Settings (x2 Oversampling, Normal Mode)

    Regards,

    Highlighted
    New Poster

    Re: BME280 Data to test Calculations

    Hi,

    Do my settings/data look correct?

    Could it be a faulty sensor, or am I missing something?

    Thanks

    Community Moderator
    Community Moderator

    Re: BME280 Data to test Calculations

    Hi Badger,

    The data that you provided does not specify which value corresponds to which calibration register. I could not decode the calibration data.
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