Please select Into the mobile phone version | Continue to access the computer ver.
Help! Drone would ascend attitude above set limit during return home
1001 26 2017-2-19
Uploading and Loding Picture ...(0/1)
o(^-^)o
Pandakev
lvl.2
Flight distance : 548763 ft
Australia
Offline

My mavic would return at prescribed attitude home but at home point, it would start ascending again until I pause or cancel the return home function and land it manually. Does anybody else have this problem?
2017-2-19
Use props
CuaC
First Officer
Flight distance : 369626 ft
South Africa
Offline

Disable the vision sensors and try again the rth, if then it works as expected your ground sensors are not working properly, you can try to calibrate and check again. If that doesn't work you'll have to ask for a replacement.

I'd suggest to pull your logs and open a case already.
2017-2-19
Use props
DJI Natalia
Super Moderator
Flight distance : 318 ft

Offline

Pandakev, may I know have you contacted our tech support to create a case and provided the flight log for evaluation by engineers?
If so, may I have the case number?
2017-2-20
Use props
Seamus
lvl.1

United States
Offline

I had the same issue yesterday.  I used RTH after losing line of sight.  The home point was directly into the sun.  I believe the Mavic interpreted the sun as an obstacle due to the forward obstacle avoidance being enabled and blinded.  My Mavic ascended well above the altitude limit I had set.  I had to cancel RTH and descend to approx 200 ft AGL before regaining line of site and manually bringing the Mavic back to home.

Is it normal for the Mavic to ignore the altitude limit when the RTH path is "obstructed"?
2017-2-20
Use props
napabill44
lvl.2
Flight distance : 14068 ft
United States
Offline

Same thing for me today.  Sun low in the sky, and I lost visual contact.  Drone at 200+ ft and kept getting obstruct warnings.  Was flying into the sun.  When I RTH it started to ascend, over the 400' max.  I canceled and managed to manually bring it back close enough for visual contact.  A bit scary.
2017-2-20
Use props
Jenee 2
Captain
Flight distance : 7852129 ft
Australia
Offline

Yes, if the OA is sensing the sun as an obstacle then it will just continually climbing well past RTH height and well past any set maximum height. It just ignores them all. Lots of people have this problem. Just stop RTH and fly home manually.
2017-2-20
Use props
Jason Lane
Second Officer
Flight distance : 260144 ft
Philippines
Offline

Jenee 2 Posted at 2017-2-20 23:08
Yes, if the OA is sensing the sun as an obstacle then it will just continually climbing well past RTH height and well past any set maximum height. It just ignores them all. Lots of people have this problem. Just stop RTH and fly home manually.

Does the app show the OA warnings and radar arcs on the screen when this happens in RTH mode? That should be an easy way for people to know if OA is the culprit or not.
2017-2-21
Use props
Ex Machina
Captain
Flight distance : 1806362 ft
United States
Offline

Jason Lane Posted at 2017-2-21 00:18
Does the app show the OA warnings and radar arcs on the screen when this happens in RTH mode? That should be an easy way for people to know if OA is the culprit or not.

It does show alerts. I think the app also provides some haptic feedback when OA kicks in, but I can't be 100% sure about that.

I tend to watch height and distance readouts while RTH to keep on top of what's happening.

Had this happen to me yesterday for the first time, realized the flight path was headed towards the sun, so I took over control and flew manually at a diagonal for a bit until I could get the altitude low enough not to be bothered by the OA false-positive. The video is amusing, really looks like I keep bumping into an invisible wall.
2017-2-21
Use props
Jenee 2
Captain
Flight distance : 7852129 ft
Australia
Offline

Jason Lane Posted at 2017-2-21 00:18
Does the app show the OA warnings and radar arcs on the screen when this happens in RTH mode? That should be an easy way for people to know if OA is the culprit or not.

Sometimes you see the OA arc but sometimes it does not show. When you experience one of these episodes, you tend to be watching the drone as it brakes, climbs, brakes etc to make sure you know where it is to get it under control again.
2017-2-21
Use props
Jason Lane
Second Officer
Flight distance : 260144 ft
Philippines
Offline

Jenee 2 Posted at 2017-2-21 21:47
Sometimes you see the OA arc but sometimes it does not show. When you experience one of these episodes, you tend to be watching the drone as it brakes, climbs, brakes etc to make sure you know where it is to get it under control again.

And do those OA warnings show up in the flight record when you play it back? I'm just trying to figure out if there's an easy way that users can tell whether OA is the cause, or if it's the same bug in RTH that I was experiencing before the latest firmware.
2017-2-21
Use props
Jenee 2
Captain
Flight distance : 7852129 ft
Australia
Offline

Jason Lane Posted at 2017-2-21 22:04
And do those OA warnings show up in the flight record when you play it back? I'm just trying to figure out if there's an easy way that users can tell whether OA is the cause, or if it's the same bug in RTH that I was experiencing before the latest firmware.

No warnings show in the Healthydrones flight records. I never had any problems with the previous firmware and now I am really confused because I have just changed from Android phone to an IPad Mini 4 and I haven't yet had the problem while using the iPad. Go figure?
2017-2-22
Use props
geofox784
lvl.4
Flight distance : 1482175 ft
United States
Offline

I thought that it disables the obstacle avoidance during RTH? I assumed it was for this reason. I always see "obstacle avoidance disabled" whenever RTH is activated. You should just set the RTH correctly so there is no risk of hitting an obstacle.  
2017-2-22
Use props
Ex Machina
Captain
Flight distance : 1806362 ft
United States
Offline

geofox784 Posted at 2017-2-22 06:34
I thought that it disables the obstacle avoidance during RTH? I assumed it was for this reason. I always see "obstacle avoidance disabled" whenever RTH is activated. You should just set the RTH correctly so there is no risk of hitting an obstacle.

I think you are seeing "Obstacle avoidance will be disabled in landing" messages -- I think this means OA is active on the RTH, but disabled on landing since the Mavic knows the condition of the landing area?
2017-2-22
Use props
Ex Machina
Captain
Flight distance : 1806362 ft
United States
Offline

Ex Machina Posted at 2017-2-21 09:11
It does show alerts. I think the app also provides some haptic feedback when OA kicks in, but I can't be 100% sure about that.

I tend to watch height and distance readouts while RTH to keep on top of what's happening.

Welp, looking at my flight log (phantomhelp and healthydrones) I actually don't see any warnings. Weird. Now I'm questioning my recall.
2017-2-22
Use props
Jason Lane
Second Officer
Flight distance : 260144 ft
Philippines
Offline

Ex Machina Posted at 2017-2-22 07:13
Welp, looking at my flight log (phantomhelp and healthydrones) I actually don't see any warnings. Weird. Now I'm questioning my recall.

What about the flight playback in DJI GO?
2017-2-22
Use props
Ex Machina
Captain
Flight distance : 1806362 ft
United States
Offline

Jason Lane Posted at 2017-2-22 07:15
What about the flight playback in DJI GO?

Looked there, too. For some reason flight playback doesn't display any of the alerts, at least on the iOS version of the app. Unless I'm overlooking something?
2017-2-22
Use props
hallmark007
Captain
Flight distance : 7732080 ft
  • >>>
Ireland
Offline

Ex Machina Posted at 2017-2-22 07:23
Looked there, too. For some reason flight playback doesn't display any of the alerts, at least on the iOS version of the app. Unless I'm overlooking something?

There is a recording in the app that shows all warnings, and flight dates.

Just go to equipment click on enter device, in right hand corner 3 dots click scroll down 3 from the end WARNINGS click your flight date this will give you a list of all warnings for required flight...
2017-2-22
Use props
Griffith
First Officer
Flight distance : 98537 ft
United States
Offline

Jenee 2 Posted at 2017-2-20 23:08
Yes, if the OA is sensing the sun as an obstacle then it will just continually climbing well past RTH height and well past any set maximum height. It just ignores them all. Lots of people have this problem. Just stop RTH and fly home manually.

In relation to this ... After RTH to the proper ground coordinate - before landing - the Mavic will rotate to the take-off compass direction before descending.  If that direction is facing the sun, it might ascend or just hover.  Try your take-off with the Mavik pointed in another direction.
2017-2-22
Use props
fans90d4f438
lvl.4
Flight distance : 451335 ft
United States
Offline

there are two settings for disabling collision avoidance. click the three dots in the upper right hand corner of the app. then select the radar looking icon (second from top) on the left hand side.  Diable "enable obstacle avoidance" on that screen, then scroll to the bottom of the same screen and go to "advanced settings".  In there, turn off the "RTH OBSTACLE CHECK"  
2017-2-22
Use props
Ex Machina
Captain
Flight distance : 1806362 ft
United States
Offline

hallmark007 Posted at 2017-2-22 07:29
There is a recording in the app that shows all warnings, and flight dates.

Just go to equipment click on enter device, in right hand corner 3 dots click scroll down 3 from the end WARNINGS click your flight date this will give you a list of all warnings for required flight...

Ahh, thanks, there is the obstacle detected alert!

Weird that this isn't also presented in the Flight Playback tool.
2017-2-22
Use props
hallmark007
Captain
Flight distance : 7732080 ft
  • >>>
Ireland
Offline

Ex Machina Posted at 2017-2-22 07:58
Ahh, thanks, there is the obstacle detected alert!

Weird that this isn't also presented in the Flight Playback tool.

You would think it should, it's a good tool to check after your flight, I also see redundant compass warnings appear on this, which I presume means , compass has switched to second compass because of interference.
2017-2-22
Use props
geofox784
lvl.4
Flight distance : 1482175 ft
United States
Offline

fans90d4f438 Posted at 2017-2-22 07:49
there are two settings for disabling collision avoidance. click the three dots in the upper right hand corner of the app. then select the radar looking icon (second from top) on the left hand side.  Diable "enable obstacle avoidance" on that screen, then scroll to the bottom of the same screen and go to "advanced settings".  In there, turn off the "RTH OBSTACLE CHECK"

Android? I don't see this option on IOS. No advanced section on Visual Navigation Settings.
2017-2-22
Use props
geofox784
lvl.4
Flight distance : 1482175 ft
United States
Offline

Ex Machina Posted at 2017-2-22 07:58
Ahh, thanks, there is the obstacle detected alert!

Weird that this isn't also presented in the Flight Playback tool.

I remember seeing those alerts before but they seem to be gone. Not seeing any alerts in flight playback anymore. I can see them in the healthydrones data though.
Edit: Tried again, but instead of scrolling through it quickly if you play it back at 1x, 2x, 4x, or 8x speed they will show up.
2017-2-22
Use props
geofox784
lvl.4
Flight distance : 1482175 ft
United States
Offline

Reviewing the HealthyDrones data I can see that the "Obstacle Avoidance will be disabled in landing." warning wasn't activated until it was over the landing area.
2017-2-22
Use props
Jenee 2
Captain
Flight distance : 7852129 ft
Australia
Offline

Griffith Posted at 2017-2-22 07:36
In relation to this ... After RTH to the proper ground coordinate - before landing - the Mavic will rotate to the take-off compass direction before descending.  If that direction is facing the sun, it might ascend or just hover.  Try your take-off with the Mavik pointed in another direction.

I agree but when you first get a Mavic, there is no big poster in the box to tell you not to takeoff into the sun or RTH into the sun.
2017-2-22
Use props
Jenee 2
Captain
Flight distance : 7852129 ft
Australia
Offline

fans90d4f438 Posted at 2017-2-22 07:49
there are two settings for disabling collision avoidance. click the three dots in the upper right hand corner of the app. then select the radar looking icon (second from top) on the left hand side.  Diable "enable obstacle avoidance" on that screen, then scroll to the bottom of the same screen and go to "advanced settings".  In there, turn off the "RTH OBSTACLE CHECK"

Yes I am aware of those settings now but turning one or both off is like putting a bandaid on a software problem. If we all make adjustments to get around the problem it will never get fixed. As I have said before, I never had the problem with the previous firmware.
2017-2-22
Use props
Griffith
First Officer
Flight distance : 98537 ft
United States
Offline

Jenee 2 Posted at 2017-2-22 17:17
I agree but when you first get a Mavic, there is no big poster in the box to tell you not to takeoff into the sun or RTH into the sun.

It's not generally a  problem unless the sun is very bright.  In any event, you can manually rotate the drome 90 degrees and manually land or just hit the "land" button on the RC.
2017-2-23
Use props
Advanced
You need to log in before you can reply Login | Register now

Credit Rules