Auto landing

Boss_Vyc · Apr 4, 2018

Hello guys

A bug on the software force landing alone. Last week it landed 50 meters more then home point, although the drone still had a 22% battery. The landing can not be deactivated in any form. I tried to cancel the from app, from remote control, enable sports mode, deactivating the landing protection from the app. Nothing seems to work in all these cases. My luck was that I can still order the drone to go in the left, right, front and back side. So I managed to land on a field in the grass without damaging it.
Today I tried another flight with a high-flying (I know the rules and I apologize. It was just for the test). At 71% battery the drone went into force landing, reaching the ground with 45% battery but still with the battery error (low battery). After restart the bird, i flew again the 45% remaining battery.
Installed is the firmware .700 and various modified parameters (sport mode and height).
It will be seen in the log that I kept the acceleration down to come faster 5m / s.
What can I do to cancel this bug or error?
Here is the log file.
DJI Flight Log Viewer - PhantomHelp.com
Thanks for your help and sorry for my English.

msinger · Apr 4, 2018

It's not possible to cancel the auto landing that auto initiates once the battery reaches the critically low level. That level won't be reached as quickly if you fly closer to the ground.

MavicCF · Apr 4, 2018

Boss_Vyc said:
Hello guys

A bug on the software force landing alone. Last week it landed 50 meters more then home point, although the drone still had a 22% battery. The landing can not be deactivated in any form. I tried to cancel the from app, from remote control, enable sports mode, deactivating the landing protection from the app. Nothing seems to work in all these cases. My luck was that I can still order the drone to go in the left, right, front and back side. So I managed to land on a field in the grass without damaging it.
Today I tried another flight with a high-flying (I know the rules and I apologize. It was just for the test). At 71% battery the drone went into force landing, reaching the ground with 45% battery but still with the battery error (low battery). After restart the bird, i flew again the 45% remaining battery.
Installed is the firmware .700 and various modified parameters (sport mode and height).
It will be seen in the log that I kept the acceleration down to come faster 5m / s.
What can I do to cancel this bug or error?
Here is the log file.
DJI Flight Log Viewer - PhantomHelp.com
Thanks for your help and sorry for my English.

Does this happen with more than one battery?

Plawa · Apr 4, 2018

Does this happen when you're not 2000+ meters up?

Just_nick · Apr 4, 2018

That's what happens when you mess around with the root menu, things get screwed up. It looks like it was doing a smart RTH, though the inability to cancel is weird.
Also, guy that was crying to me, check out the mountain he's on.

MavicCF · Apr 4, 2018

Just_nick said:
That's what happens when you mess around with the root menu, things get screwed up. It looks like it was doing a smart RTH, though the inability to cancel is weird.
Also, guy that was crying to me, check out the mountain he's on.

He's having a critical battery auto landing because it thinks he's at 10% battery even when he's not.

ac0j · Apr 4, 2018

Battery firmware update needed?

msinger · Apr 4, 2018

MavicCF said:
it thinks he's at 10% battery even when he's not

That auto landing is not triggered at 10%. It's triggered when the aircraft calculates the battery only has enough power left to safely land.

MavicCF · Apr 4, 2018

msinger said:
That auto landing is not triggered at 10%. It's triggered when the aircraft calculates the battery only has enough power left to safely land.

So would deactivation smart RTH fix it?

msinger · Apr 4, 2018

MavicCF said:
So would deactivation smart RTH fix it?

No. It didn't initiate the low battery RTH. It triggered the auto landing that occurs when the battery reaches the critically low level.

MavicCF · Apr 4, 2018

msinger said:
No. It didn't initiate the low battery RTH. It triggered the auto landing that occurs when the battery reaches the critically low level.

I just find it confusing that I can be at 1600' and 30% battery without any auto landing wheras he is at 2000' or so and still 70% battery with a forced auto landing. My critical battery doesn't kick in until the preset 10%, no matter how high I am. It still doesn't make sense to me...

msinger · Apr 4, 2018

MavicCF said:
I just find it confusing that I can be at 1600' and 30% battery without any auto landing wheras he is at 2000' or so

He was at 6,618 feet.

MavicCF · Apr 4, 2018

msinger said:
He was at 6,618 feet.

Oh was that meters

. Makes sence now

thanks for your patience.

Boss_Vyc · Apr 5, 2018

Thank you all for the answers . Tested with 2 batteries. Now I do not have the courage to send the drones away because of this. The first time the drones was sent 4000 meters away and when it was in RTH it activated autolanding with 26% battery. He landed on a street in the city 200 meters away from home point. Last week was sent 5,000 meters away and landed 40 meters across, all with a 22% battery. The altitude was 80 meters. I've allowed the test with height because she always drops with great capacity in the battery and can handle it more easily when landing. If it is over private property or buildings, this can cause an crash.
I also saw drone flying at 2500 meters altitude and return with normal user control.
The same i see for long distances of 6000 meters and the drone returns with RTH 5% battery without landing like crazy.
My battery was not crical because it landed with 45% battery, then after restart it returned to normal.
I think it's an application bug or FW.

genesimmons · Apr 5, 2018

have u tried using litchi or another flight app, also try the modded dji go app thats floating around, if it does that in litchi then its a firmware issue not a app issue i would think

Lake_Flyer · Apr 5, 2018

Boss_Vyc said:
Now I do not have the courage to send the drones away because of this.

Considering the distances and altitudes you are flying that might even be a good thing?
Sending it over a city? Having it auto landing in some street?

Boss_Vyc · Apr 5, 2018

I don't try litchi, but is an good idea. I will try it. Now i made another downgrade to .400fw and i will try it again.
The distance and altitude it was only for tests. I believe all the drone pilots try it sooner or later to break the limits. Now i wait for 2 extra batteries to make a nice mode. It's just for fun. I make the upgrade for batteries but I'm afraid of this auto force landing.

bushie · Apr 5, 2018

The sooner youcrash your Mavic the better for the community. Flyig at the hight and dxistance you do is askingfor problems and askigfor enforcement against you. We certainly do not all act like idiots.

Boss_Vyc · Apr 5, 2018

Ok. Thanks

Paul2660 · Apr 5, 2018

I am surprised that at 6000' you did not see a massive wind warning. There had to be some kind of wind blowing up there, and it also may have created an issue for the drone in regards to the battery levels.

Still amazes me that at that height, it came back down to the correct spot.

On the wind warnings issue I have noticed if I get them a lot on one flight, say more than 4, I can sometimes have some strange issues with the Mavic, mainly gimbal related. But now when I get them, I tend lower my height and things seems to calm down. Not that I have attempted such a flight at that height.

Paul Caldwell