Hello all,
I am building a new quad with pixhawk. Flew it 3 times but got 2 flip-crashes.
The 1st flight was good. Flew for 17mins. Did an autoTune and can loiter in the air.
In the 2nd flight I added additional 500g of LiPo battery on it. It got a clip-crash when I was moving the quad side-way during autoTune. One motor should be stopped in mid-air.
The 3rd flight was taking off in stabilize mode, holding it in mid-air for 3~4mins, and suddenly flip-crashed to the ground. This time I touched all ESC after crash and they were all very hot.
I believe I am running into pixhawk+simonK-ESC+low-Kv-motor unsync issue. But I can’t sure even I have my dataflash log in hand. I will change ESC for sure, but worry if the flip-crash is actually due to something else and I will still get flip-crash.
Dataflash logs for the 3 flights are uploaded to google-drive. They are bigger than 2MB so I put them there.
https://drive.google.com/folderview?id=0B_T04E4z0FBlSUl3MEEtNkdna2s&usp=sharing
Here is my quad specification
- quadcopter frame
- 3DR Pixhawk running AC3.2.1_Quad
- 3DR external GPS+compass module
- non-3DR power module supporting 6S LiPo
- 5S LiPo battery
- DYS BE4108 480kV Motor
- DYS 30A ESC with SimonK “tgy_debug” firmware
- 15x5.0 propeller
- 433MHz EzUHF Rx
Any help are very much appreciated. And I am a newbie to pixhawk/ApmCopter.
Great thanks!!!
Wilson