I started with curved turns. I changed it to straight lines to troubleshoot my heading problem.Have you tried changing the Mission Setting parameter from 'Straight Lines' to 'Curved Turns' ?
I started with curved turns. I changed it to straight lines to troubleshoot my heading problem.Have you tried changing the Mission Setting parameter from 'Straight Lines' to 'Curved Turns' ?
Rod,Sometimes it works, sometimes it just ends mission, with the same mission?
Yes that is a tough one.
"The only thing is that the drone is not facing the POI like it should"
Facing horizontally?
Is it off a lot or just a few degrees?
If your up in the air, not a mission does the reporting heading look correctly?
Meaning close to you in your yard, point it at your garage, does it look like its pointing the same as displayed on the screen map / direction?
To me, that would be the clue for weather it needs a compass calibration.
Your talking about POI 1?
"I'm surprised there is no heading data in the litchi log file. Is it stored anywhere else?"
Your not looking at the instructions for the flight, you looking at the results of the flight, unless I'm missing something.
Rod
Why?Personally I would have at least two more waypoints between 1 and 2 and two more between 2 and 3.
Why?
I don't understand how it gives more of a visual adding extra waypoints on a straight line? I understand about max distance and making curves smoother with more waypoints. Neither applies here. More waypoints on a straight line would also be needed if I were following terrain but I'm not. This is a small test mission to test something specific. These are actually fairly short legs compared to other longer and more complex missions I've programmed.It gives me more of a visual of what the AC is doing. You would keep the same POI in each. There is a max distance in Litchi between waypoints but I don't think your close to that. I add more waypoints in some of my videos to make my turns be more smoother. I always use curved turns. You can change that turn in each waypoint make it small or large.
I don't understand how it gives more of a visual adding extra waypoints on a straight line? I understand about max distance and making curves smoother with more waypoints. Neither applies here. More waypoints on a straight line would also be needed if I were following terrain but I'm not. This is a small test mission to test something specific. These are actually fairly short legs compared to other longer and more complex missions I've programmed.
Also, I almost always use curved turns. My initial version of this had curved turns. I changed it to straight lines to test something.
Good point on the low batt RTH. Thank you. Feeling dumb that slipped my mind. Of course in a headwind it could still be a nail biter.I know litchi aborts mission when sat locks drops before 6. I've noticed this when experimenting with flying under a bridge. (Side note: my P3P could maintain enough locks to fly mission while P4P would lose too many for Litchi's comfort and it would come to a hover using vision position hold).
Anyway lack of GPS at the point Litchi dumped out is not your issue, nor do you have any compass errors. Have you tried running similar waypoint mission with Go app or another app like Airnest, and see if it switches modes on you?
Unless there's something fundamentally flawed (like compass error and gps loss) you normally don't need to worry about your drone coming home if you have smart RTH turned on. It could hover out of sight and radio range but when battery depletes enough it will initiate RTH on its own. That function is independent of Litchi functioning correctly.
Is it? I'm curious regarding the difference between interactive mode and flying a mission disconnected.Unless there's something fundamentally flawed (like compass error and gps loss) you normally don't need to worry about your drone coming home if you have smart RTH turned on. It could hover out of sight and radio range but when battery depletes enough it will initiate RTH on its own. That function is independent of Litchi functioning correctly.
My money's on GPS issues, which is consistent with all the evidence.Here is something interesting. I'm attaching a collage showing my healthy drones track from two days ago (when I was having problems but eventually got a couple good runs) and today when I had no problems.
View attachment 79239
If Skyboysteve was answering my scenario then we are talking about the AC stopping the mission and hovering out there beyond range sitting in F-GPS mode (no longer F-WP mode). True that it's not in P-GPS mode either. But it's no longer flying a mission. But I suppose maybe it does need to be tested in order to be sure.Is it? I'm curious regarding the difference between interactive mode and flying a mission disconnected.
Even if you have RTH enabled, the aircraft will continue the mission to completion when disconnection rather than initiate a failsafe RTH. So obviously RTH can be overridden by Litchi under some circumstances. The question is, how is low-battery RTH affected by this? Thata "failsafe" RTH mode too.
I'm hoping you know with some evidence (the Litchi folks, DJI, official docs you read, experts you've spoken to, etc.). If it's just that it makes sense, I agree -- but engineers do make mistakes when designing complex systems.
Interesting theory. Thanks. Too bad the logs don't contain DOPMy money's on GPS issues, which is consistent with all the evidence.
Remember, you can have more than enough sats locked in and still have very poor accuracy -- and therefore big errors -- when the geometry of the satellites is bad (extreme angles, for example).
This leads to your position wandering all over the place each reading. You very well may have just hit a particular configuration of satellites that were that once-in-a-while crappy geometry.
Something was making the logic conclude it did not have accurate enough location information to stay in P mode.