Hello all!
I've just noticed a weird behaviour on my quad, the heading angle increases constantly when connected to the GUI even if the quad is perfectly still...
I can't figure out if it's a fault of the board or something that I did wrong. The good thing is that it's not really showing when hovering or flying, but for the sake of knowledge I'd like to understand what's the issue.

CleanFlight_Naze32_HeadingAngle_Increase (0 min 43 sec)

The setup is:
Naze32 Full (baro and mag disengaged from CLI)
CleanFlight 1.10 Luxfloat
d4r-II (that sits just underneath the flight controller, might be this the cause?)
DYS 1806 2300kv
DYS BLHeli 20a

What you think?

(baro and mag disengaged from CLI)

is the answer.
What you are seeing is Gyro integration drift and error buildup.
Perfectly normal.

I see! Thanks waltr