Dan O
 lvl.2
Flight distance : 650768 ft
Romania
Offline
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So, it finally happened to me as well. I will put down all relevant data so that you may learn from my issue and finally DJI to really solve such a disturbing behaviour for a drone addressed to novice users.
1. No of flight: 106, no errors or missbeahaviour untill flight 106
2. Firmware versions: latest both drone and Remote
3. Apk version: DJI Go V 4.2.20, updated a day before the fly away
4. No usage of OTG, drone connected in 5.8 Ghz
Resume of the incident:
Fiirst flight of the day, one no real issue except of a lag in showing the distance from the home point. Beeing first usage of DJI Go V 4.2.20 I considered this related to the APK.
Second flight of the day, around 15 minutes later apk crashed 2 times before stabilizing when sarted, then record button did not worked. After cleaning up phone memory all went fine.
1. Minute 0:56 I noticed a tilting horizon while flying sideways to the right, the til was to the left which may occur if accelerometer is giving false information regarding the drone's angle. After I found this abnormal at minute 01:05 i started pulling back the drone which did but in a very large curve, describing half a circle(bowl effect?)
2. Minute 01:16, switched to atti mode with no audio warning.
3. Minute 01:17 magnetic field interference
4. Minute 01:23 weak GPS signal, position accuracy may be compromised
5. From here on I was fighting the drone which was not only drifting with the wind(this I am able to handle as I flyed several not GPS drones, hellis planes, whataver elese) but it was changing direction and speed drastically. After arriving in my area I tried to land with no response, then I switched to Sport mode and suddenly GPS was on again and the drone was behaving normally.
6. From minute 01:23 till minute 01:25 there is no info in the flight path altough the drone apperea 80 meters close to me that 2 second before.
My conclusions as following:
1. Tilted horizon indicates accelerometer issues and/or software issues
2. Magnetic field interference is a missinterpretation of accelerometer related issues.
3. Weak GPS signal has nothing to do with No'' of visible sattelites
4. While in atti mode the drone is not fully manual as it should and only drift in the wind but instead it's going wherever it wants, changing the speed and direction without input nor under the wind influence
5. Even so the drone is controlable but it requires a very good level of skills which is not something DJI is targeting with a selfie drone.
Last point which DJI NEEDS to address is to treat this issue like a safety point that it actually is, there is no coincidence now and a huge amount of users are/or will experience that in the near future.
The proposal of DJI on DJI support facebook page was to reset firmware and calibrate both compass and IMU, I am sorry guys but this MUST BE A JOKE!
I will specifically in a written form request for a complete refund for this product which represent a safety risk!
For sure, I am expecting a DJI official position!
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