Flight crash, Hex cube with ArduCopter 4.2.1

Hi, We had a crash in our flight. checked all the log data, couldnt able to find the rootcause for the problem.
Need some support and help from you guys. the memory of the log is more than 10 mb so attached the link below.

Attached log files for your reference.

Log File

Attached video of fligh link as well.

Flight Video

Sriram S

Hi @Sriram_Selvaraj, have you flown successfully with this param before? The reason I ask is that I think ATC_RAT_RLL_P, ATC_RAT_RLL_I, ATC_RAT_PIT_P and ATC_RAT_PIT_I for this drone is a bit high but I am not sure the root cause is from tuning.

Has this craft flown at all? You don’t have battery logging.

Some more info about the craft would be great. Like motors, battery type, and propeller size is important, especially for the initial setup.

Hi @bigboy061293 yes i did. attached the log for your reference. the flight was stable successful without any issues.
please do check it out.

Succesful flight

Haha i have hybrid generator setup onboard. :sweat_smile:
Yes indeed @dkemxr . i haven’t configured the battery management system. i am using a 12 S battery and i couldnt able to find a proper power module for the 12 S battery. You are welcome to recommend a suitable power module for a 12 S battery system which cube will support.

Hi @Axel1 thanks for the interest.

Motor : hobbywing X9 motor combo with 35 inch propeller
Battery: 12 Lipo battery

please feel free to ask if any other info is need.

At Mauch you’ll find suitable products rated to 12 cell and more

I wouldnt fly without setting up proper voltage and current monitoring

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Thanks fo the suggestion @xfacta