Hey guys,

I have a question regarding waypoints with Litchi.

I did set the altitude to drop but it never happens. Do you know why?

I dunno if the problem is because it is over the water.  As you can see in the pic, I changed the altitude in waypoints 3 and 4, but my bird does the whole mission with the same altitude.

They are all relative to your home point altitude; thus if your home point is 50 feet higher than the lake, then 277 altitude is really 327 (about 331), same as home point.
A bit off topic, but I always try to curve sharp angles, because I am not sure how a fast moving craft will behave trying to keep a sharp angle.  And I avoid big altitude drops over a small time span (not relevant to your flight, which does not have sharp drop offs).

MD_Icarus Posted at 2016-6-27 13:07
They are all relative to your home point altitude; thus if your home point is 50 feet higher than th ...

Yes, I know that. But I am almost sure that this is not the problem.
When I set to don't change the altitude in those points, it is EXACTLY the same, nothing change during my flight.

I tried also with sharp angles.

Thanks for your reply

Chris512 Posted at 2016-6-27 13:34
Any chance you could share the CSV from the HealthyDrones log for the flight?

Yep,  will do it tomorrow.

Video is here:

https://www.youtube.com/watch?v=SoeLb2bGOjY

Chris512 Posted at 2016-6-28 14:08
I watched your video and want to say very nice flight!  It is hard to perceive any altitude changes  ...

my bad...
the flight is this one:

I sent you the wrong video before, sorry

Beto NYC Posted at 2016-6-28 17:02
my bad...
the flight is this one: https://www.youtube.com/watch?v=DG73Nd7HqhE

one more thing: when I set my Phantom to stay in one waypoint for x seconds, it doesn't work.

Beto NYC Posted at 2016-6-28 22:04
one more thing: when I set my Phantom to stay in one waypoint for x seconds, it doesn't work.

You cannot set an 'action' if you have curved lines set up.

The phnatom has to pass over the waypoint for an action to trigger. With curves on the phantom does not pass over the waypoint (usually).

Lets say it's about 600ft between WP 2 and 3, in that 600ft it gradually drops 54ft between the two waypoints, looks about right to me on the video.

You could test it on land, set up a small mission with a couple of waypoints, put them say 30 ft apart, and put one at 100ft and the other at 200 ft, and watch it descend. between them.

malvern Posted at 2016-6-28 16:23
You cannot set an 'action' if you have curved lines set up.

The phnatom has to pass over the way ...

Thanks for that.  You just answered a question for me.

Curved lines for taking videos.

Straight lines for photos.

That's what i do anyway.

Thanks for all replies. This weekend I will try again with a lower altitude.

Chris512 Posted at 2016-6-29 16:28
Litchi 3.6.2 came out today with ability to set speed at waypoints.  Very nice addition.  I flew t ...

Just saw it, updating right now. Cool feature! Would be much better if we could set different speeds without signal.

I will test it this weekend.

Also now we can cancel landing or RTH, great! I always had to switch to P to cancel L or RTH.