I have recently updated a 600mm class quadcopter (X-666 frame) from an APM 2.6 (It went up in smoke) to a Pixhawk 2.4.8,
This is my 3rd Pixhawk so I’m up on setup, config, and calibrations.
Yesterday I completed the power monitor calibration so this morning I wanted to run AutoTune.
I took the aircraft out, powered it up, waited for GPS lock, armed the motors, waited for the AutoSave LED dance, and took off.
I hovered until the main LED went green and landed to save the trims. (Not that I had any to save…)
I armed the motors, took off and established a hover out of ground effect.
I switched to Loiter. Every thing was fine so I switched to PosHold. Again things were fine so I switched to AutoTune.
Taranis announced “AutoTune Flight Mode” (I’m using C&T Flight Deck), the quad twitched roll left, inverted, and crashed.
The only physical damage was a broken GPS mast…
Here is the hardware list:
Dry Weight (no battery) 1545
APM 2.6 w/GPS, telemetry radio
2 4S 5200mAH 15C LiPos in parallel
Generic 5010-530Kv motors
Tall landing gear
1555 CF Props
Hobbywing Pentium 30A ESC
200mW vTX w/CP Antenna
I suspect a motor de-synch. I have some Hobbywing Platinum Plus 30a ESCs, so I’ll make the swap and try again.
Any further guidance or assistance will be appreciated.
3DR Telemetry Radio
FrSky X8R RX
CCD FPV Camera