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Altitude reads > 50m when at ground level

Posted by AndyMck on February 9, 2013 at 10:02am

Hi, my 3DR quad ( purchased RTF from udrones ) shows an altitude of > 50m when at ground level.  I have only noticed this since upgrading from 2.9 to 2.9.1.... Anyone any ideas why this might be?

The quad is fitted the 3DR GPS....and on last attempt locked onto 6 satellites.  Also has the MB1200 sonar module.

thanks

Andy

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Replies

  • 3D Robotics
    Chris Anderson February 9, 2013 at 10:05am

    I'd recommend disabling the sonar (in the MP hardware setup page). It's only needed for terrain following, not altitude hold, and under some conditions is vulnerable to noise. 

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