Hello community,
During my latest flight my quadcopter made several flips and crashed from 40 meters high. Reviewing the logs I couldn't understand which part is responsible for the crash. All parts were found in good condition. I mean the flight controller, ESCs, motors, Propellers etc. Only an arm broken and the landing gear. Lucky me but I am anxious about flying that thing again. So I could use some help.
My setup is:
Frame: Tarot 650 IronMan
Motors: 4x Sunnysky X4108S 480kv
ESCs : Turnigy Plush BlHeli Firmware 25A
Propellers: Tarot 1555 Folding props
Flight controller: APM 2.6 clone
GPS: uBlox lea 6h
Battery: Turnigy 5000 4s 30C
Radio transmitter: Turnigy 9XR
Radio receiver: FrSky D8R-II PLUS 2.4Ghz 8CH
I have uploaded my log file if anyone needs it.
Replies
After checking again I found that one connection of the front left motor's was loose and doesn't always give power to the motor. So I believe this is the problem and that it didn't happened from the impact. I have to solder those connections. Lesson taken. Thank you guys. You were both right!
near line 19300 you can clearly see how attitude and desired attitude diverts.
this is a common example of what happens when you lose thust on one motor, - something went bad, may look like rear left arm of the quad, but I did not put a lot of thought to that.
Thanks for your answer. So do you believe that I should focus to the motors and escs? The rear left arm is the only arm that broke during the incident. But I don't believe that it happened during the flight. Any ideas about that quick change of modes during the last seconds. As I remember I only change the mode to stabilize to save my day. But as I can see there 5 more mode changes.