Sparkfun 9DOF sensing roll pitch and yaw, displaying figure in labview.

[Sky2301]

Hi! I'm currently doing my final year project. One of my project task is to programme the Sparkfun 9dof IMU. I can get the accelerometer and gyroscope data except for the magnetometer. The data for magnetometer does not seems correct. Thus, I need some solution idea for this. 

Thank you. 

Sky.

[User002]

Sky,

Before anyone can help, you must explain more about the problem you have 🙂

Usually Magnetometers need proper calibration and you must not place the IMU near any electric motor, steel structure or other magnetic materials.

Br,

/Roger

[Sky2301]

Sorry, I forgot to explain further 🙂

I came out with a programme of the IMU. It seems to work fine except it cannot get the magnetometer right. I attached a file of the programme. When I tilt my IMU down, the Down and Move Down LED will light up. But when I tilt to the right, left and up, it will not light up at all. So I don't know what is the problem actually. Whether it got to do with the calibration or the programme.

:))

[Sze Pei]

theres quite a number of missing sub VI =( 

[User002]

Before anyone can properly help it's of good practise to present somehow "clean" labview code in the forums.

There are numerous examples on various internet websites on how to program labview for readable code. As a side benefit, you would have an easier time debugging yourself.

However, a first step to make your code more readable would be to replace the arrays with IMU data by averaging and scalars in the wires.

Also to use sub-vi's for all the duplications going on in the VI.

Br,

/Roger

[User002]

Me thinks not. 😉

All VI's are included in the zip.

Maybe there is someting missing in your LV installation?

Br,

/Roger

[Sze Pei]

oh sorry ! my mistake. im able to run it, but is it normal when the figure at the outer ring move very fast ? 

sorry for asking stupid question cause i've never study about all these at all, im just trying to get what my lecturer wants me to do. so sorry. sorry to trouble you. 

[User002]

Sze, questions about the Sparkfun products is best placed in their forums. 😉

However, it sounds like your IMU need some calibration. So you probably should download the Arduino development environment and the source code for whatever is running on your Razor IMU.

Check out this tutorial and videos:

https://forum.sparkfun.com/viewtopic.php?f=14&t=30736

Br,

/Roger

[Sze Pei]

i've uploaded the lastest code found in the sparkfun forum. 

however when i debug my VI , the waveform and the reference out is not moving at all =(

what is happening ? stress =(

[User002]

Try this:

See if it works?

Br,

/Roger