Open-source qibla finder with tilt compensation using 9-DoF IMU and GPS connected with Arduino

-Documentation:

To reap, this Qiblah compass has the following features: 
*Determining the Qibla using the magnetometer and/or the GPS receiver in case the circuit is likely to move for long distances.
*Tilt compensation.
*Magnetometer calibration.
*Open source for non-commercial purposes.
*Built with public and available circuits and easy to rebuild.
*Well documented.

The circuit:
- Arduino board
- BMI270 shuttle board
- Adafruit Mini GPS PA1010D
- Monochrome 0.91" 128x32 I2C OLED Display