This means all other waypoint altitudes are related to waypoint 1. If waypoint 2 altitude is 50', it means it it higher than waypoint 1 by 50'.When instructions state waypoint height is relative to start height. What is met by this?
Sent from my iPad using PhantomPilots mobile app
Litchi heights are exactly the same as in the DJI GO app.When instructions state waypoint height is relative to start height. What is met by this?
See above. Waypoints are relative to home point - NOT to waypoint 1.This means all other waypoint altitudes are related to waypoint 1. If waypoint 2 altitude is 50', it means it it higher than waypoint 1 by 50'.
Not at all ... that would be way too confusing and cause problems all the time.So it is not related to starting program height but height of way point 1 only. So if waypoint 1 is 50 ft waypoint 2 is 50 ft it is the same height.
I always plan offline missions and Litchi references all other waypoints wrt to waypoint 1 as there is no home point. May be when waypoints are loaded to aircraft, they get readdressed but that doesn't affect mission. Not sure what happens if max altitude goes above the set limit.Litchi heights are exactly the same as in the DJI GO app.
They are all relative to your home point which is zero.
From Litchi waypoint help ...
Altitude: The altitude of the waypoint relative to the elevation of the aircraft where it was powered on.
See above. Waypoints are relative to home point - NOT to waypoint 1.
If waypoint 2 is 50 metres, it's 50 metres above home point.
Not at all ... that would be way too confusing and cause problems all the time.
So, if you fly start on a cliff with a height of say 10m, the Phantom will maintain the same height if you go over the cliff? It won't descend to 10m above the beach?
thanks.Yes ... this gets asked a few times a week.
Just like a plane or a helicopter, the Phantom won't plunge when it flies over a cliff.
It will just keep flying - because your Phantom has no idea what is below it or how far below it is.
One should be careful in executing the mission as all altitudes will be referenced with respect to home point and if the home point is at lower altitude than waypoint 1, you may go totally wrong in estimating the heights of obstructions.
I therefore keep my home point close to waypoint 1 or at least at the same level.
The lowest setting Litchi Waypoint will allow is 5 metres above home point.After taking off on said cliff, can you set a waypoint at an altitude 20 feet below the home point? (say there is a 100 foot drop off) .. .alt = -20 ??? The flight apps of other popular drones unfortunately assume the earth is FLAT.
if the home point is at lower altitude than waypoint 1, you may go totally wrong in estimating the heights of obstructions.
When you are flying a Phantom, regardless of whatever app you use, the only height your Phantom knows is Home = zero.what is the zero altitude: homepoint, waypoint 1, sea level or what??)?
I missed that Litchi allows waypoint_1 only if it's altitude is higher by min 5 m. Thanks for corrections. Good that Litchi has this protection built in.The lowest setting Litchi Waypoint will allow is 5 metres above home point.
If you want to fly waypoints lower than home point, you have to rethink the mission and launch from lower down.
Home point will always be lower than Waypoint 1.
You can't set a waypoint less than 5 metres above home.
Thats what I thought works but picking lower altitudes is very risky as you need to check for elevations too at those points.You can set a waypoint as low as 200 meters below the home point. Here's an example from iOS Litchi ver. 1.2.1 (I know it's old):
View attachment 52128
I just checked and the current Mission Hub will also allow negative 200m waypoints.
I've never tried loading one like this onto the P3. It might not accept it, depending on firmware version.
Absolutely. As you mentioned earlier, the Litchi Mission Hub helps you do that if you select "Map" and check the "Terrain" box.Thats what I thought works but picking lower altitudes is very risky as you need to check for elevations too at those points.