Attachments
Last edited:
That is worrysome . . Just got my P4P+ Repaired and upgraded firmware . . going for a test flight . . please let us know if you find anything . . .at allAirdata UAV - Flight Data Analysis for Drones
this log shows good signals, GPS, satellites so no idea why it stopped working .
Your P4Pro had an abrupt power loss. The method used to see this is to look at the motorVolt data which is 50 Hz. (The battery data is only 1 Hz and has a 1.5 second delay). At the end of the .DAT motorVolts were around 16 volts and then dropped to around 7 volts when the .DAT ends.View attachment 81785 After recording my RTH point I took off yesterday evening and ascended. After 50 seconds of going straight up I reached 60 feet or so then the rotors turned off and it plummeted to the ground smashing the gimble completely off, ruining the landing gear and damaging the shell. I have a magic pro and p3 and have been flying for 2 years and never had this before. Looking at flight log it says ATTI mode kicked in but that shouldn't disengage rotors should it. I don't have DJI care as I never used it on my p3 so I'm stuck with a ruined p4pro which is going to cost a fortune to fix !
Flew it for about 25 min today basic stuff no fancy mode switching . . . all perfectly normal surface to 400ft about 1200ft distant. Camera did well also . . and got some nice stills and 4kUHD video. . . no issues at allThat is worrysome . . Just got my P4P+ Repaired and upgraded firmware . . going for a test flight . . please let us know if you find anything . . .at all
IMHO it could be the battery or something inside the bird. Some of the posters over on the threads I referred to are convinced the incidents were caused by the battery not being seated properly. I don't find that very compelling though since the power loss incidents seem to be associated with an interval of manufacturing dates.Do you think the battery had a fault. Im afraid to put that in once I get it repaired ? The battery volts dropped so low I'm concerned. Its a new official DJI battery that has only been charged 8 times .
Sounds to me like a faulty battery . . possibly an internal wiring fault and you lost half the cells all at once(hence the 7.6v on all motors all at once). If it was a loose battery connection it would have gone to zero. Have not seen the data file but I can't think of anything internal to the machine that could cause that simultaneous behaviour on all four motors. Software maybe . . but rather unlikely. Did you get any further analysis back.Do you think the battery had a fault. Im afraid to put that in once I get it repaired ? The battery volts dropped so low I'm concerned. Its a new official DJI battery that has only been charged 8 times .
That's interesting. Looking a little closer at the very end.Sounds to me like a faulty battery . . possibly an internal wiring fault and you lost half the cells all at once(hence the 7.6v on all motors all at once). If it was a loose battery connection it would have gone to zero. Have not seen the data file but I can't think of anything internal to the machine that could cause that simultaneous behaviour on all four motors. Software maybe . . but rather unlikely. Did you get any further analysis back.