New version of the FreeIMU library adds support for Sparkfun boards

The FreeIMU library has traditionally only supported FreeIMU boards out of the box. However, changing it to support Sparkfun’s IMUs has always been very simple and it has been done by many people.

Unfortunately, it seems that many are still unable to modify the library by themselves so I finally decided to add support for Sparkfun’s boards in the new version of FreeIMU library out of the box.

So, if you happen to own one of the following Sparkfun boards, you should be able to simply use the FreeIMU library by uncommenting your board definition in the FreeIMU.h file.

The boards currently supported are:

IMU Digital Combo Board – 6 Degrees of Freedom ITG3200/ADXL345 SEN-10121
9 Degrees of Freedom – Razor IMU SEN-10736
9 Degrees of Freedom – Sensor Stick SEN-10724
9 Degrees of Freedom – Sensor Stick SEN-10183

I don’t own any of these boards, I simply supposed the code based on those products pictures. If you happen to have one of these, please test the new version of the library with your board!

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FreeIMU

triple-axis ITG-3200 Breakout Sparkfun can’t run.

Submitted by Anonymous (not verified) on Thu, 2012-09-27 06:03.

FreeIMU library cannot run triple-axis ITG-3200 Breakout Sparkfun.

That is true. You need at

Submitted by fabio on Thu, 2012-09-27 09:40.

That is true. You need at least an accelerometer + gyro to use it. You only have a gyro.

3 axis gyro

Submitted by Anonymous (not verified) on Thu, 2012-09-27 12:15.

thank for reply..

you have a program for gyro only.

In the library you find code

Submitted by fabio on Thu, 2012-09-27 14:54.

In the library you find code for reading the raw data from the ITG3200 but not for the sensor fusion.. however, if you have any programming experience, modifying the FreeIMU library to only use gyro to estimate orientation is pretty easy.

Thank you

Submitted by Cateringr (not verified) on Thu, 2012-06-07 18:07.

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Great Work

Submitted by leforban (not verified) on Fri, 2012-03-09 15:45.

Hello and thanks for sharing such huge work.

I have tested the free IMU with thre razor 10736 from sparkfun. This results in a better AHRS device. However we notice important drift on yaw. In some posts people said that the IMU needs calibration. Could you give me some advice or index about how to calibrate sensor?

Regards