Calculating Tilt Angle for Mounted iPad Using Accelerometer Readings

[prrao56]

we have an Ipad mounted on a vehicle and would like to know that if the ipad is mounted in a tilted manner, would the gforces along x, y, z directions change. if so how do we calculate the tilt angle from the accelerometer readings recorded before and after the tilt.

 

[chiro]

Hey prrao56 and welcome to the forums.

Are you familiar with geometric concepts like the scalar product? (Dot product in three dimensions)?

http://en.wikipedia.org/wiki/Dot_product