[anypis]

Is there any explanation of this behaviour? I reset board, loaded clean firmware but it happens again. It flies on attitude mode and then it slowly tries to roll right and back. I'm using oplink as receiver.

[f5soh]

If you see strange behavior using Attitude stabilization, try setting Accel filtering in Attitude tab.
Something from 0.05 to 0.1
Remove vibrations.

The Yaw drift looks normal if you don't use Mag, Yaw heading only based on Gyros.

[anypis]

Thank you, I will try and share results.

If you see strange behavior using Attitude stabilization, try setting Accel filtering in Attitude tab.
Something from 0.05 to 0.1
Remove vibrations.

The Yaw drift looks normal if you don't use Mag, Yaw heading only based on Gyros.

[anypis]

I tried all other possibilities it is still doing same problems

[f5soh]

Post your config file.

File > Export UAV settings

[anypis]

Settings

[f5soh]

Nothing wrong with config i think.
I notice also the baro pressure drift at same time

How is the temperature variance ? Room temperature ?
You can do the thermal calibration for less drift.

What appends if you redo Gyro calibration after the board warm ?

[anypis]

It is room temp. and I made thermal calibration it took 20 minutes.
Then the last option I will try gyro calibration after warming the board.
Thanks!

[f5soh]

The config file you send do not have any temperature calibration

[anypis]

Really! I did the calibration, saved and rebooted the board.
I will redo then. Thanks for informing

[anypis]

I think i found my problem. My board has a big magnetic interface. When I arm the quad and give 40% throttle GCS telemetry rolls to right 20 degree even it is physcially flat.
Do you have any idea how to isolate the board?

[f5soh]

Like i say in first post, remove vibrations.

Remove board from frame and try to reproduce,
Mount board with adhesive foam.