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Spiral Maker for Litchi Waypoint Missions

parkgt

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Very neat piece of work. There is another enhancement that would be interesting.

Right now the POI height can be set but it is static. Being able to control the pitch angle as the altitude increases would provide some benefits when flying around taller structures.

One could start looking at the base (ground level) with a large degree of pitch and then decrease pitch as altitude increases to get a horizontal view higher on the structure. This would then bring the horizon into view and offer a sweeping vista at altitude.
 
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DJ Wes

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Very neat piece of work. There is another enhancement that would be interesting.

Right now the POI height can be set but it is static. Being able to control the pitch angle as the altitude increases would provide some benefits when flying around taller structures.

One could start looking at the base (ground level) with a large degree of pitch and then decrease pitch as altitude increases to get a horizontal view higher on the structure. This would then bring the horizon into view and offer a sweeping vista at altitude.
Thanks for the suggestion. This is something that I've been thinking about for some time. I've added this as a new option.

  • Multiple Gimbal Pitch Modes: Both "Focus POI" and "Interpolate" gimbal pitch modes are now available in spiral missions.
    • Focus POI: This mode is appropriate when flying around an object where it is desired to keep the camera pointed at a specific height on that object throughout the entire mission. Flying around a small building is an example of a mission where focusing on a point of interest might be the best option.
    • Interpolate: This mode is appropriate when flying around a tall structure where it is desired to have the camera focus at a height that changes throughout the mission. Flying around a tower is an example of a mission where interpolating between a starting and ending gimbal pitch angle might be the best option.
 

Greekislandlover

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So looking forward to flying some missions with this, thanks for adding it!

I've got several missions planned and ready to go - unfortunately the weather is terrible :(
 

Agnieszka MT

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I know what you are referring to - there appears that there needs to be a "destination" component between waypoints and an orbit which causes the footage to either pause, jump, etc. That's what video editing is for. :)
Wow, I never knew this - in fact, most of my Dronelink missions failed before Orbit was started after Path. I always thought this was because of wind etc (I tried them at the coast), but perhaps this was the reason? I must try with Destination in between.
 

Trask55

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Really cool! I'm just getting started with a Mavic 2 and this is going to make it much easier to get some of the shots I'm after. Looking forward to actually flying my first generated spiral mission. Thank You!
 

parkgt

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Wow, I never knew this - in fact, most of my Dronelink missions failed before Orbit was started after Path. I always thought this was because of wind etc (I tried them at the coast), but perhaps this was the reason? I must try with Destination in between.
 
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Agnieszka MT

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Did you start from spiral? When I started from spiral it worked.
But when I incorporated spiral in the route after the "path", it continuously failed with error "too far off the course". This was in a different location than the flight that succeeded, so I just assumed that this had something to do with conditions.
It rained over the weekend here in SA, so I did not get chance to try with "destination" in between that would probably correct the error. I will share the result if it works :)
 

parkgt

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That was a waypoint mission, constant radius. The gimbal pitch changes between top and bottom.

Here is one that is just a orbit with a constant gimbal pitch with a increasing diameter.
 

Greekislandlover

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I've been trying to get the opportunity to try this for months, and this was my first attempt. I combined three rotations with a fly in and fly out as a mission.

I made some mistakes in the original mission, and the video jumps where I have cut out a bit where the drone detected and object and stopped. Also, the people in the video are me and my two kids who were part of my "Crew" so no uninvolved persons are near my flying.

I've sped it up just a tad to make it run faster, but it's really just experimentation and I need to do some fine tuning of the mission. In addition, I had programmed several other missions but they were too tight to objects and the ground so I am going to have to have another go at them and fly again.

 
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Rui Madureira

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Hi DJ Wes

First of all, thank you for your work on the spiral programming for Litchi! Nice job and very usefull!
I have an request/ doubt... Is it possible to convert or use the kml file generated in Google Earth to use in DJI Pilot Missions?

Thanks!
Regards from Portugal!
Rui Madureira
 

Jim Dow

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You might want to extend the spiral flight line to a more diverse flight line such as the logrithmic spiral for approaching a target - or even collecting aerial photography over an area. The benefits of gently curved, convergent, non-traditional (non-linear/non-parallel) flight lines include a) a more diverse view perspective and b) mitigation of the Structure-from-Motion doming/dishing (elevation) error. Google "Gently Curved, Convergent, Non-traditional Drone Flight Paths" to see the math for the log-spiral curve. I've attached a couple examples of curved flight mission plans for your review - fixed wing drones and multi-rotor drones. Purtuniq - Quebec - Canada Image.jpg Peeble Creek Mine Second TEST 021819 Image.jpg Bessemer Airport POINTS 021619.jpg
 
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spud1969

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Just wanted to throw in my THANK YOU to DJ Wes for this tool - what a great job, and I can't wait to incorporate it into some flights!
 

Jim Dow

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You might want to approach your target using a log-spiral trajectory. It might make for a more interesting, dramatic video. The attached image offers some options.
 

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  • Log-Spiral Constant Tangent Angle Illustration-LINE 102020.jpg
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Bussty

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This looks great! Roll on Waypoint Compatibility for Mavic Mini!
 

Jim Dow

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Being a software engineer, I really appreciate clever solutions like this! Nice work.

But, I do have to ask: Is there something that Litchi does (at least in this spiral use-case) that Dronelink doesn't?

I also own a Litchi license, but find I'm using Dronlink more due to the combining of components in a single mission and the web version supporting everything. I will use Litchi if a Dronlink mission fails for some reason and I need to quickly create a mission in the field.
Try using the log-spiral curve instead of the basic spiral entry curve. Then add an orbit component once in the immediate vicinity of the target point (POI). Here's an example prepared using DroneLink - for the same reasons you are mentioning.
 

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  • DroneLink Imported Curved Flight Path (1).jpg
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webvan

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Would there be a way to emulate the Parrot Anafi's "Rise" feature with Litchi ? The idea is to go up and then do a 360, it's demonstrated here
 

gope_73

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Discovered Spiral Maker yesterday and tried it today. But immediately tried something. Twice a small section from Google Earth -> created the two .CSV with Spiral Maker and copied them into one file. Created a Litchi file with this new CSV and then flew it.
See screenshots(Airdata / Mission Hub)

This opens up completely new perspectives. I still have a small problem:
The Spiral Maker creates a "mission.csv" from a "named.kml". It would be nice if the mission had the name of the .kml.

Translated with www.DeepL.com/Translator (free version)
 

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