Hello everybody. I just finished building an Y6(B) and went to do some outdoor testing.
The copter was flying quite ok, It was not perfect but I thought it was mainly due to untuned PIDs and slight wind.
Tested stabilize, althold and loiter modes with no problems.
So I put on a new battery and tried the autotune procedure which crashed the copter immediately.
It seems as if the copter just roled over and crashed.
I had a similar crash two days before, while flying in althold. The copter slowed down from a fast flight and also rolled too much and crashed.
I checked the log but can not find any possible problems, vibrations seem to be ok, as well as power for the APM.
I have tested the APM also with a small DJI F330 frame, where autotune and generaly everything works OK.
Could this be an issue with ESC/motor sync?
Can someone please advise what to look for?
Video and log files:
APM 2.6 with 3.1.2 FW and LEA-6 GPS with external compass, Y6B frame config
APM powered via 3A Turnigy switching BEC (no other electronics connected)
modified Tarot FY690 Pro frame
tarot 620kv motors
ZTW 30a spider opto ESC (simonk)
1355 Tarot carbon props
4S 5800 mAh Zippy battery
frsky x8r RX connected via sbus to cppm decoder
frsky Taranis radio
Any help is appreciated.