DaveH_au
lvl.2
Australia
Offline
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"The flight data will show any changes in your home point."
I totally agree with you here.
Does it show changes in the position of the controller (your position)?
I have found the AC is fine and is correct as far as gps location is concerned. If the pilot hits RTH or the Ac goes into RTH as it is intended (loss of signal, voltage problem whatever), the App has your RC position incorrect. No difference to having a bad gps signal on your phone. It is the app that reports the controller position to the drone.
The Drone then says Return to home and a question is asked. Something along the lines of. Positions differ from home, do you want to return to your current position or the previous home position.
Remember the user is still near his take off point (home point) not knowing the App shows the user a long way from where he is actually standing. It has sent this position (wrong) to the drone, that is why the drone asks the question do you wish to set the home position. If you select the current position as you would expect it would come to where you are, the drone will fly to the wrong position that it has received from the App. Nothing wrong with the drone it is going to the co-ordinates it has received from the App.
And yes as you say, the flight logs will show "New Home Point Set" , but nowhere near the takeoff point or where you are located. That is the jumping home point.
If this false point is way out of your range you will loose signal and not be able to cancel.
"You described a fault that causes the location of the aircraft to be plotted incorrectly which is very different from having the aircraft position plotted correctly but having the home point jump."
The aircraft has always been in the position it is supposed to be in. I never said the AC was not going to where it is supposed to be going, the APP is giving the wrong co-ordinates to the AC and it is going directly to where it is supposed to be going.. Only problem is.. It has been told to go to an incorrect location.
"There are two settings in the app relevant to Chinese mapping.
Have you looked to see what yours is set to and does that make a difference?
Last section in the app settings - the one with 3 dots.
Look for:
Enable Amap (for China Mainland
Calibrate Map Coordinates (for China Mainland)"
Thank you for this information. I have known what these settings were for and have both turned off.
All I said here is I wonder if the shift in positon is related to the datum. Others with the same problem in the app have reported differing distances.
It is apparent from the number of ac crashes and lost drones since this update to 3.1.2 App that there is a bug or problem raising its head. I have removed Version 3.1.2 and installed 3.1.0 and MY position and the AC are correct on the map. This indicates to me the GPS in my tablet is functioning. I re-installed 3.1.2 and the map screen again shows the AC correct and MY position incorrect, up to 1000m away.
I have came across these mapping/shift issues years ago working with Autocad and Mapinfo, Is it not possible the latest app was not recognising the position of one of these buttons.
I apologise for the long post.
Regards
Dave
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