built-in phone's 3D orientation experiment

[pietropicerno]

Hi Jens,
yes I know! But I'd prefer to be immune of ferromagnetic disturbance rahter than having a stable heading for a long time ;-).
Thanks, Pietro

PS: I really hope you could re-consider, in the future, to add a built-in euler angles (acc+gyro+mag, preferably with XYZ and YXZ decomposition order, and either with NED and ENU absolute frame convention) experiment for teaching purposes!