MPU6050 quaternion calculation with Madgwick AHRS algorithm about i2cdevlib

[IamHui]

It's very easy!Just do it!
where are you come from? Are you a girl? haha...

At 2014-04-08 13:27:41,adeelakram03 [email protected] wrote:

Hi every one. I am new in this forum. I want to use mpu6050 to calculate quaternions and attitude by using Madgwick AHRS algorithm and kalman filter. Currently I am using MotionApps v2.0 and it is working fine for me. I tried to write my code with MotionApps but it is very unstable. I want to know how can i convert accelerometer and gyroscope raw output into real acceleration and angular rate. Thanks in advance

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[adeelakram03]

Hi IamHui, I don't know who r you but your behavior is ridiculous. If you can't help, don't do it but you have no right to make such comment. It was my first interaction with arduino and such imu modules. I really am sorry for asking help.

[udawat]

@adeelakram03 The raw data (ax, ay, ...) may be fed to the Madgwick's AHRS function. C-like code is available at this website (.zip file at the bottom should work with slight modifications) - http://www.x-io.co.uk/open-source-imu-and-ahrs-algorithms/
I did try with the above mentioned code but i keep getting unstable values in quarternion format. Let me know if you require anything. Waiting to hear your findings.

[honnet]

Not sure if that helps but you might find some interesting tricks here:
https://github.com/richards-tech/MPU9150Lib

And here are 2 blog posts from a guy how use this lib with a cortex m3:
http://harinadha.wordpress.com/2013/07/03/mpu9150datalog
http://harinadha.wordpress.com/2013/06/25/mpu9150lib

...and I really liked the simplicity of this one:
http://www.codeproject.com/Articles/729759/Android-Sensor-Fusion-Tutorial