Heading Track Issues with GPS + APM2.6

Posted by Sergio on July 17, 2015 at 5:37am

Hi everyone,

I've been having issues calibrating my GPS to point to the right direction in Mission planner.

My HDOP is low, My SAT count shows 11-17 any given time, compass calibration was successful and live calibration picked all the point.

Soo, what i get is my gps heading always 45-80 degrees off no matter how many time i calibrate or change the roll numbers under setup. (I tried all of the options for the mounting).

I tried 3 different GPS's, one of them the original 3DR.

Is this a firmware issue? It used to work well before i change the firmware on my quad.

Please advise,

Thanks for the help.

Sergio

 

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Replies

  • 3D Robotics
    Chris Anderson July 17, 2015 at 7:47am

    GPS heading is only meaningful when it's in motion. It is measuring the direction of the track, and when you're on the ground there is no track. 

    • Sergio > Chris Anderson July 17, 2015 at 7:54am

      Thanks Chris,

      My only concern is that n the past when I pointed the front of the craft to an area (while on the ground) the RED tracking line would follow close to the same direction, now it moves but it is always off by 45-80 degrees. Not sure if it is safe to take off and loiter but I will try. Compass looks correct though.

      Do you know if the firmware version could have affected this read?

       

    • 3D Robotics
      Chris Anderson > Sergio July 17, 2015 at 8:00am

      Again, if the compass is correct, don't worry about the track until you're in motion. 

    • Sergio > Chris Anderson July 17, 2015 at 8:04am

      Ok, Thanks for the help.

This reply was deleted.