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MPP DJI Mini 2 flies diagonally at takeoff, can't reset a manual restart point, gimbal issues with new update

Hello,

I had a very frustrating time today mapping with MPP and my DJI Mini 2. I really would like this app to work for me but I'm not sure that it can. Here's what I need help with:

  1. When I set the drone to take off, it would lift off the ground and then fly diagonally, I assume to meet the most recently updated home point. Often, this doesn't exactly match up to where the home point shows up on the map. So, in practice, even if I space myself 20+ feet away from trees or wires, it will fly quickly towards them at takeoff. I'll have to quickly switch to sport mode to take control, which counts as a flight, and now when I go to restart this, I'll have to start the process anew with flight 2. Does the home point correlate to the drone location or my phone's location at the start of the flight? It would be incredible if I could take off manually and then start the flight after I get the drone above the trees or wires, but I don't think this is possible.
  2. After this mess of starting and restarting flights, I got a notification right about when it got to altitude that said something like "flight will be kept at 4.5 mph to match flight 1". The first time this happened, I took control, landed it, and redrew the entire map just to start fresh. Somehow, 1 and 2 ended up happening again, and I just let it start mapping, and it proceeded at 10.5 mph, which would have been fine. I'm unsure how I should've interpreted the original notification or why it popped up. It never has before.
  3. After battery 1 ran out, it returned to home. I swapped the battery out, restarted it, and it took off very quickly. I realized I forgot to switch it out of sport mode, so I switched it to normal (I probably shouldn't have done anything here), which activated manual controls. I had to land the drone again and restart the takeoff process, except now my last abandon point was erased and I only had one right near the original home point from this botched flight attempt. At this point, I got frustrated and abandoned the mission after discharging two batteries to get 1/3 of the way through a map that only should have required 2 batteries total to finish. I've never had luck manually resetting these abandon points or creating a new one. I saw an article posted on here about how to do it, but it's never worked on my version of MPP.
  4. After this, I updated the app to the latest release on the android app store that included orbital and vertical missions. I thought this might help some of the issues I encountered earlier. I ran a grid flight later in the day and set the gimbal angle to 0 after noticing I now had the option to set it in mission planning. When I started the flight, I encountered an issue wherein the gimbal would go to 0 once the drone got to altitude, then it would snap to what looked like 5 degrees, then it would get stuck in a loop of panning down to 0 and then snapping back up to 5. This never happened in the earlier versions where I could set the gimbal angle during the flight. I couldn't figure out how to fix this so I had to abandon the mission.
  5. During both of these flights, I couldn't tap on the camera view to enlarge the camera view window. During my previous flights, I could. I'm not sure what happened but this made manually landing the drone more difficult. If I tap the camera view window in the bottom corner, it just closes the camera view window instead of making it full screen...

 

Nic Garza

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Thank you for the reporting.

#1. We have sifted through the log files of other users using the latest version and are not seeing the diagonal flight issue. That is a top priority for us to figure out since it is safety related. I can see where some weirdness occurred when using 2.4.14. That version has been pretty stable for quite a while. When looking at your flight logs it shows lots of "Strong winds" warnings were shown in the Aircraft Error panel. That is the likely cause of the diagonal flight. You need to keep an eye for the flashing orange that shows that errors are occurring. The Mini 2 is especially susceptible to high winds. All of your flights at this site this day had these errors. 

#2. The second flight will allows follow the speed adjustment that was calculated for the first flight. If the first flight was faulty this would cause issues with subsequent flights. 

#3. Again, it sounds like the initial issues cascaded into multiple problems. 

#4. The new version isn't going to fix the winds. 90 degrees is straight down. The Map Pilot Pro default is 85 degrees (5 up from nadir). If the gimbal is not properly calibrated, or, the aircraft is getting nailed by high winds this gimbal can have a hard time keeping up. 

#5. We will look into the camera view swap issue. 

In general, it sounds like it wasn't a great day to fly right on the waterfront in the fall. Please try things a bit further away from the shore line in less winds and things will likely behave better. 

Zane 0 votes
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Thanks for the response, Zane. What I'm talking about was not caused by high winds, it has occurred in almost every flight I've taken with MPP. The drone will fly up about 10 ft, pause, and then zoom diagonally, maybe at a 10-20 degree angle, to start getting up to altitude. Notably, this has happened in my third flight of the day on 10/01, which caused my drone to fly into a tree. Usually, I've taken off with a huge amount of clearance to avoid this issue, but in the future I will definitely need to take off from small clearings in woodlands, so this is growing to be a big concern for me. 

 

Also, is there a way to completely reset flight data on a mission? Like if something like this happens again, to prevent a cascading effect.

The issue with the gimbal took place far away in a different location, two hours south of my original flight. I did not get a high wind warning that I recall. The gimbal issue was a glitch, not a matter of high winds. It's what happened when I tried to set the gimbal angle manually in a vertical flight a few weeks ago, it snapped quickly back to horizontal and then got stuck in a loop snapping back up. This has only happened to me on the version of the app that included vertical and orbital flights.

Nic Garza 0 votes
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We are sorry to hear you had an incident. I don't see a 3rd flight of the day on 10/1. I see one flight on the 1st and 6 on the 12th. 

There were some initial gimbal control issues on the beta versions for the Vertical and Orbit flights but we will look into what is going on there. With the public release of 3.0.12 we are seeing many successful flight logs coming in. 

You can reset the flight by unlocking the flight using the lock icon button in the upper right corner. 

Zane 0 votes
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Sorry, it was the first and only flight on 10/01 using MPP. I set up the drone, my phone (which one sets the RTH point?), and the controller in a clearing that was clear about 15 feet in all directions in a stand of cedars. It lifted about 10' off the ground and then shot diagonally into a tree nearby. Again, this happens in all of my MPP flights, but usually I give myself a lot more clearance to account for it. If the space is clear, after it flies diagonally for a a few seconds, it starts to rise in a straight line to altitude. 

Nic Garza 0 votes
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You might want to wait a bit longer before taking off from powering up the aircraft so it can get a more stable GPS fix, especially in heavy tree cover. If you program the flight while it is still getting fix it will program the waypoint that is over the home point as one position but then as the fix gets better it can settle in a different location by the time you take off. Then when you take off it will leave the ground and go to the waypoint that it thought was the takeoff location before and go slightly (or more) diagonally. When there are trees around it can make the GPS fix jump around quite a bit.  

 

Zane 0 votes
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