- Jan 18, 2016
- Reaction score
Aftermath pic: Amazon Cloud Drive
Sad to report, but I had my first crash this morning. I planned a simple mission to a park and back, but things didn't go well. It was supposed to take 8 minutes to go there and back, but after about 8 minutes had passed, my controller suddenly started beeping in this pattern - beep, pause, beep, pause - over and over.
I had never heard this before. I've had issues with missions where it would return to home early and I would get that RTH beeping sound, but this wasn't in RTH mode. It was just beeping strangely. I listened to that for about 30 seconds when sudddenly I heard it reporting that the altitude was dropping (the whole mission was supposed to maintain 269 feet). I started trying to raise the altiude but it didn't seem to be responding - the last report I hear was that it was at 90 feet. By then, it was within a couple of houses away from me and I heard it chopping through trees. I knew it was over.
Luckily, my battery didn't pop out and I was still seeing a picture from it upside down in a tree. I also had a GPS location, so I walked down to my neighbor's and was able to find it in bushes between the 2 adjacent houses down from me.
Besides some broken, dirty props, it seems ok - although I haven't tried to take it back up yet. Looking at the flight plan, it only recorded what seems to be the part where I had signal, so it's hard to tell where it went wrong. But at the end of the flight, something obviously malfunctioned, causing it to descend rapidly before my home point. Watching the video, it came down much faster than it does when returning to home. The only time I touched the controller was to try to increase altitude, so that speed wasn't coming from me.
Here's my concern - I've had very little success flying missions with the Litchi app. Half of the time, my missions end early on and my P3A goes into RTH mode. It's made it back fine every time except now, but something is triggering RTH mode early, and it's not because of the battery. The longest mission I've planned for is about 8 minutes, and that's always with little wind (less than 11mph). I've also had issues with the video cutting out during flight and the video files being corrupted. I've experimented with the DJI Go app and Litchi, and with different Android devices, and almost all flights have had some kind of issue. That's why I'm thinking my bird must be defective.
If anyone has any thoughts or suggestions, I'd be happy to hear them. Otherwise, I'm about to try to send this back and get a replacement, or try another model or brand.
FYI, here's what I was using when it crashed:
Phone: Samsung S5 (SV-G900V) - Android v5.0
Litchi app: v2.7.1
P3 FW: v1.6.004
Mission Hub - Litchi
HealthyDrones.com - Innovative flight data analysis that matters
HealthyDrones showed an average wind speed of 250mph. There were no tornoados in the area, so that definitely wasn't correct. My UAV app showed wind speeds of only 10mph:
Amazon Cloud Drive