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TODO review references to get API for IMU LSM9DS1 review calibrations from Adafruit apply then to the Sketch add filters to the IMU signals advance filters, see Adafruit_AHRS. https://github.com/adafruit/Adafruit_AHRS

Kalman filter from Arduino library

Kalma filter from TKJElectronics https://github.com/TKJElectronics/KalmanFilter http://blog.tkjelectronics.dk/2012/09/a-practical-approach-to-kalman-filter-and-how-to-implement-it/

Review Adafruit SensorLab https://github.com/adafruit/Adafruit_SensorLab https://github.com/adafruit/Adafruit_SensorLab/blob/master/examples/calibration/imucal/imucal.ino

Also have a look at https://github.com/arduino-libraries/Arduino_LSM9DS1/blob/master/src/LSM9DS1.cpp https://github.com/arduino-libraries/Arduino_LSM9DS1

https://github.com/kriswiner/LSM9DS1/blob/master/LSM9DS1_MS5611_BasicAHRS_t3.ino https://github.com/kriswiner/LSM9DS1/blob/master/LSM9DS1_MS5611_BasicAHRS_t3.ino

https://learn.sparkfun.com/tutorials/lsm9ds1-breakout-hookup-guide/all#using-the-arduino-library

https://github.com/sparkfun/SparkFun_LSM9DS1_Arduino_Library/blob/master/examples/LSM9DS1_Basic_I2C/LSM9DS1_Basic_I2C.ino https://github.com/sparkfun/SparkFun_LSM9DS1_Arduino_Library/blob/master/src/SparkFunLSM9DS1.cpp https://github.com/sparkfun/SparkFun_LSM9DS1_Arduino_Library/blob/master/src/SparkFunLSM9DS1.h

https://roboticsclubiitk.github.io/2017/12/21/Beginners-Guide-to-IMU.html

http://www.starlino.com/dcm_tutorial.html

https://theccontinuum.com/2012/09/24/arduino-imu-pitch-roll-from-accelerometer/