My phantom 4 will return to home if lost signal or if i hit the h button
but it wont desend or land from 90m
it just stayes at the 90m that the rth is set at and will hover 90m after it comes back to the home location
i have to cancle the rth and land manually

My phantom 4 will return to home if lost signal or if i hit the h button
but it wont desend or land from 90m
it just stayes at the 90m that the rth is set at and will hover 90m after it comes back to the home location
i have to cancle the rth and land manually

Aloha Andre,

     Read the manual again.  Most of us have read it a half dozen times.  There are a few pages on RTH that you will have to sort out.  You might want to go through each scenario and test your system to see how it works.  There are many other factors that affect RTH so you will want to figure out those to.  That is why it is best to read the manual a few times.

     Hope this helps!

Aloha and Drone On!

That's not what his question was about.
He said that the Phantom comes back but stays hovering 90 metres up.

Andre Bach Posted at 2018-3-25 13:21
My phantom 4 will return to home if lost signal or if i hit the h button
but it wont desend or land from 90m
it just stayes at the 90m that the rth is set at and will hover 90m after it comes back to the home location

but it wont descend or land from 90m
Andre ... I haven't heard of any other Phantom doing as you describe.
It's an interesting mystery.
Perhaps the flight data will have a clue?
Go to http://www.phantomhelp.com/LogViewer/Upload/
Follow the instructions there to upload your flight record from your phone or tablet.
Come back and post a link to the report it gives you.

Is the Phantom brand new?

This problem is ongoing from when I got it used, my distance from the home point was 1.2km away so it was not in the 20m range, this problem come and goes some times it lands other times it just hovers

djiuser_Nrtg9XtxIhhj Posted at 2018-3-26 07:29
This problem is ongoing from when I got it used, my distance from the home point was 1.2km away so it was not in the 20m range, this problem come and goes some times it lands other times it just hovers

Your issue is unrelated to the 20 metre thing.
Please share your flight data if you want help.

Labroides Posted at 2018-3-26 03:22
but it wont descend or land from 90m
Andre ... I haven't heard of any other Phantom doing as you describe.
It's an interesting mystery.

did this 3 times, comes up as cant read this page

Andre Bach Posted at 2018-3-26 14:08
did this 3 times, comes up as cant read this page

Go to the link I gave you in post #6 above.
It has instructions for finding the.txt file on your phone or tablet and how to upload it  to that website.
Then copy the link for the report it shows you and come back and paste it here.

Do you have a gimbal guard or leg extenders on it? i know you can land manually but it could be just throwing off the sensors enough for auto landing

Andre, do you mount any accessories on the drone which may hinder the VPS? If not, please kindly export the flight records and flight log for analysis, thanks so much!

Android: Connect the device to the computer, find the flight records stored in …\DJI\dji.pilot\FlightRecord\, and copy the required flight records to the computer.
iOS: Connect the device to the computer, launch the iTunes, find the flight records in the DJI GO app, and copy the FlightRecord folder to the computer.

No addons to my drone, I will try again to upload my flight record, keep getting error messages every time I try

http://www.phantomhelp.com/LogViewer/HNVGEG31CYP5C5OSYVCK/

Andre Bach Posted at 2018-3-27 14:38
http://www.phantomhelp.com/LogViewer/HNVGEG31CYP5C5OSYVCK/

The flight data shows the Phantom behaving as you described.
On the first RTH, you cancelled and resumed control as soon as the Phantom was overhead.
On the second RTH, the Phantom returned to a point overhead at 8:49 and was still hovering there almost a minute later at 9:39 when you cancelled RTH and descended.
The VPS indication is clear so it doesn't appear to be a factor.
The cause is a mystery to me.
Was this a one-off incident or does it happen every time you RTH?

Labroides Posted at 2018-3-27 19:34
The flight data shows the Phantom behaving as you described.
On the first RTH, you cancelled and resumed control as soon as the Phantom was overhead.
On the second RTH, the Phantom returned to a point overhead at 8:49 and was still hovering there almost a minute later at 9:39 when you cancelled RTH and descended.

At 7m 31s it is in GoHome mode flying at 95m altitude and the ultrasonic sensors see something 2.3m below.

Doesn't look like there are any 92m high trees there so maybe there is something wrong.

If there is nothing non-standard attached to the aircraft then these readings should be looked into...

This happens to me a lot but not all the time.
it will land on it's own once in a while

razzorbach Posted at 2018-3-28 01:59
This happens to me a lot but not all the time.
it will land on it's own once in a while

I think you should reply to DJI Susan's post with the flight log she requested so that she can get it checked by DJI support.

Meanwhile, don't use full throttle down while in the air since it might turn the motors off!

Nigel_ Posted at 2018-3-28 01:22
At 7m 31s it is in GoHome mode flying at 95m altitude and the ultrasonic sensors see something 2.3m below.

Doesn't look like there are any 92m high trees there so maybe there is something wrong.

Good spotting.
There was no spurious VPS reading during the time the Phantom was above home point and refusing to come down.
But it happened several times during the flight - at 7:25, 7:31, 7:53, 8:01 & 8:20.
It's quite strange that it was happening and enough to suggest a problem with VPS which could affect descending.
Definitely something that needs attention.

DJI Susan Posted at 2018-3-27 00:31
Andre, do you mount any accessories on the drone which may hinder the VPS? If not, please kindly export the flight records and flight log for analysis, thanks so much!

Android: Connect the device to the computer, find the flight records stored in …\DJI\dji.pilot\FlightRecord\, and copy the required flight records to the computer.

http://www.phantomhelp.com/LogViewer/HNVGEG31CYP5C5OSYVCK/

DJI Susan Posted at 2018-3-27 00:31
Andre, do you mount any accessories on the drone which may hinder the VPS? If not, please kindly export the flight records and flight log for analysis, thanks so much!

Android: Connect the device to the computer, find the flight records stored in …\DJI\dji.pilot\FlightRecord\, and copy the required flight records to the computer.

I do not have any addons or accessories that I am aware of I did get it used

So where do I go from here do I get new parts?

razzorbach Posted at 2018-3-28 15:23
So where do I go from here do I get new parts?

If it's happening on a regular basis, you could simply disable the VPS in  the app settings.
VPS is of very limited use anyway.
Or if you want to use VPS, send it in to DJI for them to look at it.

razzorbach Posted at 2018-3-28 15:23
So where do I go from here do I get new parts?

Since DJI_Susan offered to look at it, I would wait for the response, give her some time as she is normally busy.

Assuming that there is a fault with the ultrasonic sensors then I believe new boards are available at reasonable cost if you search the internet, you could replace it yourself.  However unless you know that is the problem you may be wasting your money, sending it to DJI to be fixed guarantees it will be fixed but if it is not under warrantee will cost a bit more than replacing the ultrasonic sensors yourself.  Their prices are reasonable, there is a guide to prices on the DJI support site.

Note that warrantee starts when it was activated so even bought 2nd hand you may still have some warrantee left.

Not sure if Labroides advice is correct, I have never tested it but I would expect that even with VPS turned off it would still use the ultrasonic sensors for landing, otherwise it can't slow down before hitting the ground since it doesn't know where the ground is.  Maybe someone could confirm...

Nigel_ Posted at 2018-3-29 01:35
Since DJI_Susan offered to look at it, I would wait for the response, give her some time as she is normally busy.

Assuming that there is a fault with the ultrasonic sensors then I believe new boards are available at reasonable cost if you search the internet, you could replace it yourself.  However unless you know that is the problem you may be wasting your money, sending it to DJI to be fixed guarantees it will be fixed but if it is not under warrantee will cost a bit more than replacing the ultrasonic sensors yourself.  Their prices are reasonable, there is a guide to prices on the DJI support site.

Not sure if Labroides advice is correct, I have never tested it but I would expect that even with VPS turned off it would still use the ultrasonic sensors for landing, otherwise it can't slow down before hitting the ground since it doesn't know where the ground is.  Maybe someone could confirm...
If you turn off the VPS system, it stays turned off.
For most flying, it's not much use anyway

This also tells my why active track just stops following when locked on a target for no reason at all

razzorbach Posted at 2018-3-29 06:25
This also tells my why active track just stops following when locked on a target for no reason at all

You say you got it used and you are not sure if theres accessories....
Is there a bar that goes from 1 leg to the other below the camera?

Have you calibrated it using the Dji Assistant on  your PC or mac yet and tested?

If it does happen you can switch off the VPS just to bring it back down.
As its used, i wonder if its taken a knock in its past

razzorbach Posted at 2018-3-28 06:44
I do not have any addons or accessories that I am aware of I did get it used

Noted with thanks! We do not support to analyze the data from the third party software. Please refer my message in 13# and send us the original files via Google Drive or Dropbox, thanks!

Nigel_ Posted at 2018-3-28 02:34
I think you should reply to DJI Susan's post with the flight log she requested so that she can get it checked by DJI support.

Meanwhile, don't use full throttle down while in the air since it might turn the motors off!

Meanwhile, don't use full throttle down while in the air since it might turn the motors off!

No it won't!

Eric13 Posted at 2018-3-29 23:48
No it won't!

It has happened to other people who have had a similar fault...

Bashy Posted at 2018-3-29 21:05
You say you got it used and you are not sure if theres accessories....
Is there a bar that goes from 1 leg to the other below the camera?

I have never crashed it but I don't know how the other person who flew it, as for accessories I'm obviously not talking about visual ones, I'm not sure if there are any internal accessories like range extenders or anything

DJI Susan Posted at 2018-3-29 23:30
Noted with thanks! We do not support to analyze the data from the third party software. Please refer my message in 13# and send us the original files via Google Drive or Dropbox, thanks!

I will try to get the data from dji assistant 2 but the one I posted before will not come up on that app
I will take a new flight and try to send that data

DJI Susan Posted at 2018-3-29 23:30
Noted with thanks! We do not support to analyze the data from the third party software. Please refer my message in 13# and send us the original files via Google Drive or Dropbox, thanks!

https://paper.dropbox.com/doc/dji-RjZ7zhTnT0D9O5zk6UDNJ
this one actully lands but takes forever

razzorbach Posted at 2018-3-30 15:26
https://paper.dropbox.com/doc/dji-RjZ7zhTnT0D9O5zk6UDNJ
this one actully lands but takes forever

I can access the link now, but the file size seems only 1KB? Is the correct one? Could you double check and confirm? The video file we need ends with DAT...

DJI Susan Posted at 2018-4-2 02:05
I can access the link now, but the file size seems only 1KB? Is the correct one? Could you double check and confirm? The video file we need ends with DAT...

this is what i get when i click on the link i sent, it says data file and 191mb

razzorbach Posted at 2018-4-2 05:35
this is what i get when i click on the link i sent, it says data file and 191mb

It works now, thank you! This has been forward to our engineers for analysis, will come back as long as there is an update.

Your drone didn't takeoff in the file provided, please send the correct file. Thank you!

I will have to take a new flight. resend one when I can if there is a problem with the file I sent, it's getting very hard to find the right ones that don't land or just hover when you cant view the videos with assistant 2  and it also is giving me different dates that I used my drone compared to the dji go 4 app

https://paper.dropbox.com/doc/dj ... lutjrnn8nATS3h2Yr02

this is the new flight i took, its the only flight this month so it is the right one

Bashy Posted at 2018-3-29 21:05
You say you got it used and you are not sure if theres accessories....
Is there a bar that goes from 1 leg to the other below the camera?

I have to agree about the possible knock.
Or, it might have taken a bath and dried out.