About Orientation

[Bobur-kobilov]

Hi Kris,
Thank you a lot for the source code!

I implemented Madgwick source code with LSM9DS0 and the data that I get are really good but I have a problem with aligning the sensor orientation with global orientation. For instance, for visualization, I sent quaternion data to unity 3d and when I move the sensor in pitch direction, in the unity character is moving in yaw direction. Please could you help how to feed quaternion values to 3d character

[kriswiner]

Well, you need to figure out which direction is North in unity 3d and then choose the sensor order accordingly into the Madwick filter.

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On Mon, Nov 27, 2017 at 4:14 AM, Bobur-kobilov ***@***.***> wrote: Hi Kris, Thank you a lot for the source code! I implemented Madgwick source code with LSM9DS0 and the data that I get are really good but I have a problem with aligning the sensor orientation with global orientation. For instance, for visualization, I sent quaternion data to unity 3d and when I move the sensor in pitch direction, in the unity character is moving in yaw direction. Please could you help how to feed quaternion values to 3d character — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#14>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGY1qgstp8kjX2shQZaeiO0xcgSWIbECks5s6qfCgaJpZM4Qri_j> .

[Bobur-kobilov]

Hi Kris,
Thank you for you reply!
I have been wondering how I can calibrate LSMD90 IMU magnetometer

[kriswiner]

https://github.com/kriswiner/LSM9DS0/blob/master/Teensy3.1/MiniShield/LSM9DS0_MS5611_BasicAHRS_t3.ino

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On Tue, Nov 28, 2017 at 9:26 PM, Bobur-kobilov ***@***.***> wrote: Hi Kris, Thank you for you reply! I have been wondering how I can calibrate LSMD90 IMU magnetometer — You are receiving this because you commented. Reply to this email directly, view it on GitHub <#14 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AGY1qvrAt90ZX4HLtyRtOBHuPZwDormYks5s7OrvgaJpZM4Qri_j> .

[Bobur-kobilov]

Thank you kris! I implemented and calibration is working well!
I have a question about beta value! If you can help me figure out, it would be appreciated!

1. What is the function of beta value?
2. For each sensor, do I have to tweak beta value to eliminate drift?