Board orientation causes inconsistent acceleration

Hello !

#issue1
My pixracer is physically fixed in a 270 pitch, 270 roll configuration in the plane. That orientation (or equivalent) is not an available option in the sensor calibration. Is there a way for me to manually add it?

#issue2
Setting the orientation in the QGC setting (in the SENS_BOARD_XYZ_OFF) does allow to work around the issue, however accelerations between the 2 onboard IMUs then become strangely inconsistent (mismatch of ± 2 m/s2). Are those settings not intended to be changed with big values (270deg) ?

Hardware : Pixracer R14 or R15, fixed-wing aircraft
Software : master branch PX4

Thank you,

Raphael

Hi @RaphZufferey ,
Here is what you need to do to add a new board rotation: https://github.com/PX4/Firmware/pull/12907/files