In order to calibrate the BMP280 to give correct relative altitude readings, you need to know the actual altitude at some point. Some other means to determine altitude must be used.
Pressure sensors must be recalibrated very frequently.
In order to calibrate the BMP280 to give correct relative altitude readings, you need to know the actual altitude at some point. Some other means to determine altitude must be used.
Pressure sensors must be recalibrated very frequently.