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HI
I currently trying to test the accuracy of barometric sensor on crazyflie i do it for my project. I just select only pressure in Baro configuration (logging baro.pressure) and what i got is the pressure is start up from 1013.4 - 5 mbar which is -1.2 to -1.5m i totally confuse because, what i just did is put on the floor 0m which pressure suppose to be 1013.25 mbar. What i have done it wrong is it problem with sensor?

Ps. I have update all the firmware and Client already

Hi,

The measurements you are describing seems normal. The air pressure should be about 1013.25 mbar, but this will change depending on weather conditions, inside conditions etc. If there's a storm coming then the air pressure goes down.

In short, the barometer should not be used to get an absolute value. It should be used to get a relative value (i.e to see how much you move around).