Complementary filter (Gyro + accel) with Android

Question

Recently I have made some research to use both the accelerometer + Gyroscope to use those senser to track a smartphone without the help of the GPS (see this post) Indoor Positi

Answer 1

I wrote a tutorial on the use of the Complementary Filter for oriëntation tracking with gyroscope and accelerometer: http://www.pieter-jan.com/node/11 maybe it can help you.