Autotune initializing ---> Autotune: Failed

[MuhammadBilal1]

Hi,

I’m trying to do the autotune of my Octaquad Copter (Coaxial) running PX4 (1.15) over Pixhawk 6X .

My drone is almost stable with manual tune. Want to make it rock solid with the help of autotune.

Problems:

• But, when I start the autotune, first it says “Autotune Initializing” and then after a minute or so it says “Autotune: Failed”, no reason on the screen.
• My drone is just fine, it’s not crashing. Stable position flights of upto 15 mins.
• With the little bit of wind speed (like 8-10 knots) my drone tilt and start fighting to maintain it’s position.
• The drone isn’t staying level and it’s tilting towards the direction of the wind coming from. Without wind, it’s working absolutely fine.

I’m not moving my RC sticks after pressing the “Autotune” button.

Flight Log:

Flight Review

I tried this twice but both time it’s not working.

Drone Setup:

• Quadcopter Type: OctaQuad (Coaxial Octocopter)
• Flight Controller: Pixhawk 6X
• PX4 Version: 1.15.4
• GPS: Yes
• Airframe: Generic 10" Octocopter Coaxial Geometry
• Body Structure: Multilayered Carbon Fiber with Removable Arms and Honey Comb
• Dimensions:
  – Length (Nose to Tail): 130 cm
  – Width (Right Motor to Left Motor): 130 cm
  – Height: 20 cm
• Weight: ~22 Kg

My drone is built of carbon fiber as one part. Different number of carbon fiber layers are used. Epoxy is used to combine the sheets.

Propulsion System

• Motor: M6210 HP
• ESC: XRotor Pro-H60A-14S-BLDC-RTF-HW-V2
• Propeller: XRotor 2278 propeller

[JulianOes]

That’s odd. Let me tag @bresch, maybe he can comment.

[MuhammadBilal1]

@bresch
Your kind attention is required here.
I’m unable to run my autotune.