BMP280 Factory Calibration Trimming Parameter Change

[RoBra_DLR]

Hello, we use a lot of BMP280 Sensors at once and we calibrate each sensor at our own. So we use the SensorTec-Formula, but with optimized Values. Because we can not change the onboard Values, we have to save the Values in the MC for each Sensor. Is there a possibilty to change the onboard Values on each Sensor?

BR,

Kai

[handytech]

Every BMP280 sensor is individually calibrated during production, and the resulting coefficients (that are used in the compensation formulas and should not be changed) are written to some OTP (one time programmable) memory. Unfortunately there is no user-programmable memory available in the BMP280, therefore any custom calibration values cannot be manually added to the sensor, and you would indeed need some external memory (e.g. currently in your MCU).