Quaternion and Gyroscope HELP !!!!!

Other Hardware Sensors
1

Hi everyone

I have an IMU 10724 with and Arduino Uno.

Could someone please explain to me how could i use the readings from my ITG3200 Gyroscope to get quaternions ???

THIS IS REALLY IMPORTANT !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Thanks

2

Here is a pretty good overview http://www.chrobotics.com/library
After reading through the material carefully, come back with your questions!

3

@jremington

I know this tutorial. I have read it more than once.

Know i have my ITG3200 raw readings(Gx, Gy and Gz), how do i get to the quaternion representation??

Could you please assist me i could not find any useful resources online at all ....

4

You can integrate Gx, Gy and Gz from the gyro to get the total angle rotated, but only for a few seconds. Then the gyro noise will make the calculation useless. You need more information, such as from a magnetometer and an accelerometer, to form the quaternion. Google "open source AHRS" to see how others do this.

5

Well i have an IMU 10724 and also i have an arduino ..... i found alot of open source AHRS.

My question is if i have raw gyroscope readings and my initial quaternion readings were (1 0 0 0) , what should i do to get the new quaternion.

And i know that when i get the new quaternion i could calculate my new Euler's angle.

Thanks

6

People if you help i would really appreciate it ,,,,, thanks

7

Is google broken in your country ?

Find a good book about flight dynamics.