No auto land with flat controller?

Carhn · Dec 27, 2017

Here's a issue I had yesterday... Flying around, having a great time, 3 batteries worth of fun, in sport mode too, it hauls...65.5kph!!! but my controller battery dies on me (yes I ignored the warning alarm) but assuming when it went flat it simply would return home and land. Well, it did return to home, right in front of me me...BUT... It would not land, only hover about 2m off the ground..tried an air grab but man did the thing fight me, let go, it returned to hover 2m above home spot??? I just had to wait until the mavic battery went flat, then it landed.
Does anybody know if the fact it was in sport mode was the reason it wouldn't land or is this an oversite in the safety software?

Ps, attached a cool pic for the hell of it...

wytnyt · Dec 27, 2017

Carhn said:
Here's a issue I had yesterday... Flying around, having a great time, 3 batteries worth of fun, in sport mode too, it hauls...65.5kph!!! but my controller battery dies on me (yes I ignored the warning alarm) but assuming when it went flat it simply would return home and land. Well, it did return to home, right in front of me me...BUT... It would not land, only hover about 2m off the ground..tried an air grab but man did the thing fight me, let go, it returned to hover 2m above home spot??? I just had to wait until the mavic battery went flat, then it landed.
Does anybody know if the fact it was in sport mode was the reason it wouldn't land or is this an oversite in the safety software?

Ps, attached a cool pic for the **** of it...
View attachment 27498

you probably had RTH set to hover

Kilrah · Dec 27, 2017

No or it would not have come back.

You likely have "Landing protection" on and it considered the ground at the home point not to be OK to land. It will eventually land anyway when it has no choice due to low battery.

royster · Dec 27, 2017

Happened to me also, as Kilrah says,-She didn't like the landing area,but, when battery got to critical, protesting loudly she landed !

msinger · Dec 27, 2017

@Carhn, you can disable Landing Protection in the following section of DJI GO (it's enabled by default):

Anthony · Dec 27, 2017

Carhn said:
Here's a issue I had yesterday... Flying around, having a great time, 3 batteries worth of fun, in sport mode too, it hauls...65.5kph!!! but my controller battery dies on me (yes I ignored the warning alarm) but assuming when it went flat it simply would return home and land. Well, it did return to home, right in front of me me...BUT... It would not land, only hover about 2m off the ground..tried an air grab but man did the thing fight me, let go, it returned to hover 2m above home spot??? I just had to wait until the mavic battery went flat, then it landed.
Does anybody know if the fact it was in sport mode was the reason it wouldn't land or is this an oversite in the safety software?

Ps, attached a cool pic for the **** of it...
View attachment 27498

If you ever find yourself in this position again ( or anyone you know ) just rotate the Mavic 90 Deg onto its side and it will shut off.

msinger · Dec 27, 2017

... and hang on for the ride when you go to grab the Mavic from the bottom. It really tries to pull away when the Landing Protection setting is enabled.

Carhn · Dec 27, 2017

wytnyt said:
you probably had RTH set to hover

Cant seem to find the setting to adjust that... Only options showing are 'RTH'. 'Land' or 'Hover' when RC goes flat. Last 2 options means it will land or hover where it is when it loses connection with controller. I would have thought RTH would simply come back and land as it does when I press the RTH button

msinger · Dec 27, 2017

@wytnyt is referring to the "Remote Controller Signal Lost" setting.

Carhn · Dec 27, 2017

msinger said:
... and hang on for the ride when you go to grab the Mavic from the bottom. It really tries to pull away when the Landing Protection setting is enabled.

Your not wrong there!!! Got some serious grunt.... My mate shudda videoed me hanging on, quite comical

Carhn · Dec 27, 2017

Anthony said:
If you ever find yourself in this position again ( or anyone you know ) just rotate the Mavic 90 Deg onto its side and it will shut off.

Thanks for the tip. [emoji3]

wytnyt · Dec 27, 2017

msinger said:
@wytnyt is referring to the "Remote Controller Signal Lost" setting.

View attachment 27500

i thought i helped my first droner and flubbed it,thx for the catch
but what cornfuses me is if he was able to take off and set a home point then why couldnt it land there?

Kilrah · Dec 27, 2017

It's not that clever to say "if I could take off there then I can land there too".
The landing protection just kicks in and looks at what's under it when it's time to land, nothing more.

And since it's a computer vision estimation it will sometimes (often) evaluate things poorly and thus take bad decisions like refusing to land when it's actually perfectly good but what it sees suggests the opposite.

wytnyt · Dec 27, 2017

Kilrah said:
It's not that clever to say "if I could take off there then I can land there too".
The landing protection just kicks in and looks at what's under it when it's time to land, nothing more.

And since it's a computer vision estimation it will sometimes (often) evaluate things poorly and thus take bad decisions like refusing to land when it's actually perfectly good but what it sees suggests the opposite.

which is why landing pads are better i assume