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I am trying to build pitch, roll and yaw from sensor readings of a 9 degree of freedom sensing device. The data look like that (in a .csv file):

TIME,ACC_X,ACC_Y,ACC_Z,GYRO_X,GYRO_Y,GYRO_Z,MAG_X,MAG_Y,MAG_Z
2313992204,-1.694118,-2.053042,-8.886943,0.006272,-0.004091,0.000682,-48.200001,-68.400002,13.000000
2313992204,-1.674976,-2.029114,-8.886943,0.006545,-0.003682,0.000682,-48.500000,-67.599998,11.300000
2313992204,-1.674976,-2.033899,-8.882157,0.006136,-0.004091,0.000273,-47.799999,-67.500000,12.300000
2313992204,-1.703690,-2.033899,-8.882157,0.006818,-0.003682,0.000409,-47.700001,-68.099998,11.800000
2313992204,-1.694118,-2.053042,-8.877372,0.006409,-0.004500,0.000682,-47.900002,-67.400002,11.200000

I am not familiar with building this measures from these data and also I am not familiar with quaternions. This question is the only thing I have found to be related to mine questions (Calculating pitch, yaw, and roll from mag, acc, and gyro data), however, it is not using all the axis. Ideally, I want to build this vector and be able to visualize them in 3D (like cube animation that is made live from 9dof sensors and Arduino). Moreover, I want to be able to compute the heading from this data.

Can anyone help me, I have all my pipeline in python so it would be helpful to have advice on how to do that with python?

user7083
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Guido Muscioni
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  • Do you have a reason to believe that all 9 inputs are required to calculate PRY? – Carl Witthoft Aug 07 '18 at 19:42
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    I know that gyroscope and accelerometer are enough, but I forgot to specify that I have multiple sensors, so the magnetometer will allow me to know also the relative position in the devices group. – Guido Muscioni Aug 08 '18 at 04:42
  • Base on your question you have sufficient information to calculate Roll, Pitch and Yaw. Also in the post you link there is a [linked](https://engineering.stackexchange.com/a/3350/110) there is link to Arduino. If you still have question please comeback we will try to help. – Mahendra Gunawardena Aug 10 '18 at 00:30
  • Thank you Mahendra, however the code posted only use accelerometer, I want to use also gyro information. Am I missing something? – Guido Muscioni Aug 10 '18 at 06:35
  • Any reason you want to use gyro data? – Mahendra Gunawardena Aug 11 '18 at 01:32

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