Did not understand Litchi Reverse

Videos by Drone
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Around the Pitons, St Lucia.

Did my first long waypoint mission with Litchi yesterday. As I was prepared for, I lost signal as the drone passed Gros Piton (mountain). It made a great video though, clip of below (will process the full res stuff when back from holiday):

However I used the “reverse” at mission end option expecting it to retrace its steps, back around the mountain. It turns out that isn’t what that does, so I believe it just hovered for a while, before initiating low battery return to home. I am amazed that I got the drone back, and am very impressed with the collision avoidance as it came straight back over the mountain - scary footage here:

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“Reverse” should re-trace. Strange.

Good to know collision avoidance works … most of the time.
Impressive footage! :+1:x10!

Don’t forget a low sun can trigger/confuse the collision avoidance. Had a case of that the other day when flying manually … not sure what would happen in a Litchi mission.

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It does retrace, but under manual control - you have to pull back on right stick. As I was out of range that was no good.

The way to do what I wanted would be to add waypoints bringing it safely back around and then trigger RTH once there’s a clear line back.

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Ahh. Ok. I understand, now. Useful to know. I think I was under the same misapprehension.

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One of the best ‘real world’ examples of collision avoidance I’ve ever seen! Especially as your RC wasn’t even connected at that point!

I’d have been bricking it too :blush:

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Remembered other panic detail. Landed on 7%.

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What was the total time in the air?

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Airdata says 18m16s. Felt like longer, but the the wind can gust so that could explain.

The log from Litchi cuts out while the reception goes - if I can figure out how, I’ll upload the log from the drone when back. You can see where the signal is lost/recovered though:

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Here’s the full video from the mission & the scary return journey in full HD :slight_smile:

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Even though I know you get it back, that return video is a real butt-clencher!
Some really close calls in that … and, with only forward obstacle avoidance, all it would have needed was a branch from a tree to the side to be above the MP … and it would have been so different!
Amazing! :+1:

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The other detail I failed to mention previously was it was starting to rain. Thankfully only lightly before I got it back - it can get heavy fast out there.

Now trying to figure out how to get the full flight log off the drone. Data Upload in Assistant isn’t managing to load anything.

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Connected with Assitstant, you should be able to access the MP’s internal SD card and simply copy from there.
Should be able to upload to http://www.phantomhelp.com/LogViewer/Upload/ if Airdata won’t accept those files.

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… and rain was almost the least of your problems. If I’m choosing between trees a mile away or it getting wet, I know which I’d go for. :wink:

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Hm, it’s not mounting. Will retry when I’m not supposed to be working.

If the rain had been like this at the same time it might have been an issue :slight_smile:

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Not ideal - but it would take a while before it got to places important enough for it to stop flying.

Skip to 9:00 in this clip …

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Ha - I’d seen that. Impressive but I’d rather not run the same test with mine. :slight_smile:

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And I’d rather not test my MP’s forward obstacle avoidance capability quite to the extreme that you managed! LOL

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Hm, I cannot get this to work. In Assistant I go to Data Upload as instructed here (How to retrieve a V3 .DAT File from the AC) but instead of showing a list the spinner doesn’t go away. No USB drive is mounted either.

The storage card doesn’t get mounted either… I’ll try a different computer.

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Appears to a not uncommon problem - DJI Assistant 2 Data Upload Not Working | DJI FORUM - tried on two computers now :confused:

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Problem A solved. “I don’t use android, I don’t need to install that driver” ← me being an idiot not realising that’s needed to talk to the drone.

Problem B - The data doesn’t appear to be there. The dates don’t seem to correspond to actual flights. I’ve pulled all the data off and had a look, but I don’t think it’s there. I saw a post suggesting the drone only stores so many logs and then stops once there’s no room left, and suggests deleting old logs - Keeping .DATs on the Mavic Pro accessible | DJI Mavic Drone Forum - though I’m hesitant to start messing with files on the drone directly, and in any case, that wouldn’t help getting at the log in question.