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GPS wrong reading

DanyCro

Well-Known Member
Joined
Jul 7, 2019
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Hi. I am building a drone with Betaflight 4 Omnibus.
I installed GPS BN-220.

My GPS reading 'Sea Level' altitude (elevation) and that is about 120m where I live. But all my gps (mobile, Garmin..) shows that altitude, so I know it is correct (if we talking about sea level).

But, main quastion is how to set this 120m to 0m at start ? Is that possible?
Some script for that? How do you solved that?

Also I want to say that my drone is not complited yet and I don't have barometar build in or reciever connected.
 
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