DMX_MT
First Officer
Malta
Offline
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Hello Mate !
I think you should take a moment and start learning what ATTI Mode is, Compass Errors & Yaw Errors (Usually Related when Compass and IMU create a Mismatch), Satellite HDOP, Magnetic Interference, etc..
https://forum.dji.com/thread-151297-1-1.html
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Your Case
Your Spark entering in ATTI Mode is not because it was a User Error, but because there was Magnetic Interference. You may ask from where, I will show you.
I can see that behind you there were Powerlines all through out the road. This may have caused the Compass to change the True Reading, IMU will not be effected with Magnetic Interference, when you take off and start moving away, the Compass will start gettting back to normal as the Interference is starting to Fade Away and will now show the True Reading. The Spark will see that when the Compass was changing, the IMU didn't move in co-ordination with the Compass, so it will Report a 'YAW Error' (Yaw is related to the IMU - Yaw Axis). Then the Spark will say ! There is a Mismatch between Compass and IMU and will give you 'Yaw Error' then 'Compass Error' also sending the Spark in ATTI Mode where it will lose GPS Positioning.
Fortunately your Spark entered P-GPS Mode again and you could make an RTH. If you are in ATTI, RTH wont work so dont stare at your Drone, but land or bring it back Manually via the Remote Sticks Controls. Thats why in your case, keeping it in Visual Line of Sight (VLOS) made you able to recover the Drone ! Welldone !
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