Is this normal behavior for Batometer Bricket? (Photo)

[neomutant]

Barometer bricket did not move an inch testing was in house with closed windows and doors, but its shows like he move almost 2m and "moving up and down" all the time. Showing that way soon after purchase and now after the latest firmware update. What can I do to make it fix?

 

[AuronX]

The change in altitude seems to correspond to the pressure changes (left graph), so I think it is due to unstable air-pressure.

I don't know the math, have you tried setting the reference air-pressure to the current pressure? Don't know if it is more reliable in the area of the reference pressure. (Altitude should be around 0m when you do this)

[neomutant]

Just make test outside, same odd behavior but more difference +-20meters random oscillations.

[JavaLaurence]

Mine behaves exactly the same way. A little bit surprising, I must admit.

[neomutant]

How this is possible ? Beta test missing ?

[borg]

I would expect that it stabilizes a bit more if you run it for a longer time period.

 

A change in air pressure of 0.12mbar is really not that much i am afraid. The altitude calculation is directly correlated to the air pressure.

 

There is nothing we can do about that.

 

If you want the altitude to be correct in the cm range, you will need to combine it with the IMU Brick data (with a Kalman filter).

[neomutant]

so this is just a trick ? thought that You move sensor up and down to graph  was not a flat line. But anyway in this image it look more solid (Altitude values).

 

http://www.tinkerforge.com/en/doc/_images/Bricklets/bricklet_barometer_brickv.jpg

[borg]

An increase of 1mbar is equal to a decrease of ~10m. You can see that in both screenshots.

[neomutant]

oscilation 1-3mbar is normal for this sensor? I have test it 5 minutes outside its fast sinusoid bechavior, going up and down +-20-30m.

[borg]

Do you have a screenshot of the behavior?

[neomutant]

When i be at home i will try to record a video.

[neomutant]

Video is not needed, very sorry for the confusion, the sensor is working properly. Last time when I did the test on the outside have to be affected by the weather, and my shaky hand is that I did it right behind the open window. It's amazing how reading has stabilized at a time when the sensor had a moment alone. My next step is suggested sensor fusion with IMU and GPS.