Hello,

I want land my drone from a speedboat to film a big ship. The drone need to be land on a flat floor or it's not important?
I can land it from my hand and take off. Any calibration is recommanded?

You mean you wish to take off from a speed boat?

No, nothing special, but be sure your satellites are fully engaged.

Hopefully your compass has been calibrated correctly. ;-)

Yes hand catching would be best...


RedHotPoker

As suggested by Cap'n Poker, hand launching and catching would be the best idea (practice on land before heading out to sea). But I should warn you that French law doesn't allow a nonprofessional piloting a drone from a moving craft; the boat should be at anchor (ref. Guide DSAC, AÉROMODÉLISME : MODÈLES RÉDUITS ET DRONES DE LOISIRS, paragraph 7.4 "Le télépilote d’un aéromodèle ne peut être à bord d’un véhicule en déplacement." "Cas d’un véhicule à l’arrêt : Le télépilote peut se trouver à bord d’un véhicule à l’arrêt, par exemple un bateau à l’ancre.").
So take care... and have fun!
Good flying!

Practice CSC ahead of time.  

Same in france, it's forbidden to fly from a vehicle or boat?

benetau Posted at 2018-5-6 12:04
Same in france, it's forbidden to fly from a vehicle or boat?

You never said what land of port you are flying near.


RedHotPoker

No problem if i switch on the drone on the speedboa? Start in atti and fly in gps

RedHotPoker Posted at 2018-5-6 08:50
You mean you wish to take off from a speed boat?

No, nothing special, but be sure your satellites are fully engaged.

Hopefully your compass has been calibrated correctly
Since there's never any need to calibrate the compass, this is just confusing people.

Mark The Droner Posted at 2018-5-6 11:50
Practice CSC ahead of time.

Practice CSC ahead of time.
Why?
The normal method for stopping the motors when hand catching is to hold the left stick down.
Not CSC.

Labroides Posted at 2018-5-6 13:51
Practice CSC ahead of time.
Why?
The normal method for stopping the motors when hand catching is to hold the left stick down.

i have drone racer before the phantom. What is CSC?

Combination stick command.

Csc= crash stupid craft

Flying from a moving boat is one of the riskiest things you can do. You need to research this very thoroughly before trying it. You needs to undsersatand what will happen if the aircraft goes into Return To Home mode, and your home position has moved. And that is just one factor.

Labroides Posted at 2018-5-6 13:51
Practice CSC ahead of time.
Why?
The normal method for stopping the motors when hand catching is to hold the left stick down.

Because he's on a boat.  Waves?  Up and down swells?  

Personally, I don't think I've ever tried to stop the motors with CSC except at the kitchen table

Labroides Posted at 2018-5-6 13:49
Hopefully your compass has been calibrated correctly
Since there's never any need to calibrate the compass, this is just confusing people.

Hate to see a fly away on a lake or sea...

Why are compass calibrations ever done? For bearings.


RedHotPoker

RedHotPoker Posted at 2018-5-6 16:01
Hate to see a fly away on a lake or sea...

Why are compass calibrations ever done? For bearings.

Hate to see a fly away on a lake or sea...
So ???
No-one wants to see a Phantom fly away anywhere but calibrating a compass does nothing to prevent losing the drone.
Understanding how the Phantom works is what helps prevent losing it and it would seem that you are overdue for a refresher course in the basics.

Why are compass calibrations ever done? For bearings.
???
Under normal circumstances it should NEVER be necessary to recalibrate the Phantom's compass.
Not before a flight, not after traveling some arbitrary distance, not after a firmware update and not even for a brand new, just out of the box Phantom straight from the factory in China.

Calibrating the compass gives the compass information about what magnetic effects belong to the Phantom so it can ignore those to properly identify the earth's normal local magnetric field.
The only time you should ever need to calibrate the compass, is after making changes to the hardware on your Phantom.

Mark The Droner Posted at 2018-5-6 15:42
Because he's on a boat.  Waves?  Up and down swells?  

Personally, I don't think I've ever tried to stop the motors with CSC except at the kitchen table

Because he's on a boat.  Waves?  Up and down swells?  
Yes ... and how does that make a CSC necessary?
Left stick down should be all that's required, just as on land.

Labroides Posted at 2018-5-6 16:53
Because he's on a boat.  Waves?  Up and down swells?  
Yes ... and how does that make a CSC necessary?
Left stick down should be all that's required, just as on land.

just some info, the ship is on the river.

Is this ship: https://www.marinetraffic.com/en ... 70/vessel:MAGELLAAN

Labroides Posted at 2018-5-6 16:53
Because he's on a boat.  Waves?  Up and down swells?  
Yes ... and how does that make a CSC necessary?
Left stick down should be all that's required, just as on land.

I guess you haven't seen the posts.  

People have complained that the motors sometimes don't stop in up and down swells.  

Let me explain:   the altimeter sometimes doesn't sense that it has landed due to the up and down motion of the boat.  So the motors don't stop with the left stick down.  

On land, there are no up and down swells - the land doesn't move up and down.  So left stick down works wonderfully.

And I didn't say it would be necessary.  I said practice (in case it was necessary).  I thought the implication was clear.

Hope this helps.

Mark The Droner Posted at 2018-5-7 01:58
I guess you haven't seen the posts.  

People have complained that the motors sometimes don't stop in up and down swells.  

And you've experienced this ... or just imagined it?

Labroides Posted at 2018-5-7 03:18
And you've experienced this ... or just imagined it?

Neither...

Found on youtube:

The key to landing on a moving boat is to make sure ALL automatic modes like auto return home on low battery, collision avoidance, downward facing sensors etc are switched OFF and the emergency motor stop in flight option is enabled (otherwise even after landing it won't let you switch off the motors as the boat is moving and therefore the drone doesn't think it has landed)  This was my first attempt, the boat was moving at about 8kts in 20kts of wind with the deck moving up and down vertically by about 2m in the swell. It got a bit hairy (!) but after you've done it once it gets much easier

benetau Posted at 2018-5-6 12:04
Same in france, it's forbidden to fly from a vehicle or boat?

Sorry, was slow getting back to you. Seeing as  your country label was France, I assumed that you want to do this in France. That is why I mentioned the problem. Yes, nonprofessional pilots are only allowed to control a UAV from a nonmoving (parked or anchored) vehicle. So I would take care near ports, villages, etc.

johnsr Posted at 2018-5-7 04:24
Sorry, was slow getting back to you. Seeing as  your country label was France, I assumed that you want to do this in France. That is why I mentioned the problem. Yes, nonprofessional pilots are only allowed to control a UAV from a nonmoving (parked or anchored) vehicle. So I would take care near ports, villages, etc.

exactly, i looking for more info about this and, i hope this fly will work perfectly

OOO LaLa.......OK that was HAIRBALL!!!  I thought she was in the drink after the flag tap!

Thanks for posting!

Randy

If you were to hand catch a Mavic on a boat like that, you would want chainmail gloves.

Mark The Droner Posted at 2018-5-7 03:42
Neither...

Found on youtube:

Neither...
Found on youtube:
Well it must be true then.
But for anyone flying a Phantom from a boat, you hand catch it and do not need to perform a CSC.
Left stick down will work just fine.

Mark The Droner Posted at 2018-5-7 01:58
I guess you haven't seen the posts.  

People have complained that the motors sometimes don't stop in up and down swells.  

Being a boat owner / user .... I thoroughly agree with MtD .....

You can try Left Stick Down IF the boat is steady and not moving about. BUT if boat is moving - then its CSC. Remember that the  detects ALL movement ... horizontal and vertical in its determination it has stopped moving. I cannot say for certain that horizontal movement of the boat will stop Left Stick Down command ... but its possible. Need someones actual physical results - not just forumites supposition ! Bobbing uo and down though definitely will !

OH - and the Compass calibration argument goes on and on and on and on ....

Compass calibration can be needed at times and it is wrong to say it is never needed or to say an owner should not know how to do it .... Even DJI have a dedicated Video about it ... in fact if you follow the 'Out of Box' series of videos - one of them in the series specifically takes you through Compass calibration.

Why would DJI make such a video ??

Nigel

solentlife Posted at 2018-5-11 00:19
Being a boat owner / user .... I thoroughly agree with MtD .....

You can try Left Stick Down IF the boat is steady and not moving about. BUT if boat is moving - then its CSC. Remember that the  detects ALL movement ... horizontal and vertical in its determination it has stopped moving. I cannot say for certain that horizontal movement of the boat will stop Left Stick Down command ... but its possible. Need someones actual physical results - not just forumites supposition ! Bobbing uo and down though definitely will !

Compass calibration can be needed at times and it is wrong to say it is never needed or to say an owner should not know how to do it ....
I spelled out in post #16 above when you need to calibrate the compass.
Even DJI have a dedicated Video about it ... in fact if you follow the 'Out of Box' series of videos - one of them in the series specifically takes you through Compass calibration.

Why would DJI make such a video ??
Why?
Because DJI started the whole myth about calibrating each new flight site in the first place.
DJI make great drones but are hopeless at communicating accurately.
And having very few moderators with appropriate specialised knowledge and experience doesn't do much to help either.
That's why.

At last DJI have almost got their compass calibration explanation right in the manual.
But their old materials still hang around.

Compass in mind. My only direct knowledge comes with compass calibration, from my sole Phantom 3 Pro'. I can't comment with any experienced authority about the Phantom 4 series.

But you know, "Someone" could rewrite the missing manual transcripts, with proper updated info, and share that manual with DJI. By posting it on the forum.

Hint hint. Hahaha

Shamefully, I don't know anyone who would have the free time and proper balance of patience and intelligence to do that.
A PDF copy for the peanut gallery, to save would be great.

I was under the illusion, that after doing a firmware update, a compass calibration was also in order.
If I had done a cold IMU and gimbal calibration, a further compass calibration drone dance was often in order.
I never travelled beyond 200 miles or kilometers to worry about that part of the compass recalibration myth. ;-)

RedHotPoker

''Because DJI started the whole myth about calibrating each new flight site in the first place.''

In fact not true ... but because i agree that DJI manual wording is not best - people have mis-interpreted the matter.

People ignore the first part of the Calibrating Compass section on P44 of the Pro manual as example which clearly states only calibrate if Go or prompt to do so. It also warns about ferro objects around etc.
Similar statements are in Standard and Advanced manuals ..............
It goes on to say that if you move etc. - but as L says ... badly worded because in reality - it should be read in conjunction with that opening line about prompted to do so.

Nigel

Mark The Droner Posted at 2018-5-7 03:42
Neither...

Found on youtube:

f... awesome pilot ...

Nebuchadnezzar Posted at 2018-5-11 09:24
f... awesome pilot ...

My favorite boat landing is here between 1:37 and 1:42

Geebax Posted at 2018-5-10 20:53
If you were to hand catch a Mavic on a boat like that, you would want chainmail gloves.

That's what the guy was wearing...

solentlife Posted at 2018-5-11 07:27
''Because DJI started the whole myth about calibrating each new flight site in the first place.''

In fact not true ... but because i agree that DJI manual wording is not best - people have mis-interpreted the matter.

People ignore the first part of the Calibrating Compass section on P44 of the Pro manual as example which clearly states only calibrate if Go or prompt to do so.
The whole problem with your argument is that you are the one doing the ignoring .
DJI finally dropped the irrelevant, unnecessary and misleading text about calibrating at new locations etc and updated their calibration text but you ignore it.
What's so hard to understand about:  Only calibrate the compass when the DJI GO app or the status indicator prompt you to do so.
What does that first word mean and why don't they list other times when calibrating might be needed?

Labroides Posted at 2018-5-11 14:31
People ignore the first part of the Calibrating Compass section on P44 of the Pro manual as example which clearly states only calibrate if Go or prompt to do so.
The whole problem with your argument is that you are the one doing the ignoring .
DJI finally dropped the irrelevant, unnecessary and misleading text about calibrating at new locations etc and updated their calibration text but you ignore it.

Sorry L .... my comment stands ....

I explained plainly and correctly.

We shall agree to disagree.

Nigel

solentlife Posted at 2018-5-11 23:21
Sorry L .... my comment stands ....

I explained plainly and correctly.

Clearly and correctly?
Not according to my dictionary.

I think it's little green men

Mark The Droner Posted at 2018-5-7 01:58
I guess you haven't seen the posts.  

People have complained that the motors sometimes don't stop in up and down swells.  

So if i catch the drone with my hand, the motors will stop maybe?

benetau Posted at 2018-5-13 02:26
So if i catch the drone with my hand, the motors will stop maybe?

If you hand catch your Phantom, the motors will not stop unless you hold the Phantom steady with one hand on the landing gear and also hold the left stick down for three seconds to stop the motors.
If you can't hold it steady, it will take longer.
Practice in dry land before trying on the boat.

Mark The Droner Posted at 2018-5-11 12:05
My favorite boat landing is here between 1:37 and 1:42

https://www.youtube.com/watch?v=i43YV4SvN7Y

just wow !!