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9DoF Razor IMU from SparkFun Malfunctioning

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Uploaded on Aug 25, 2010

This is the 9DoF Razor IMU from SparkFun
http://www.sparkfun.com/commerce/prod...

The board that I got has some problem with the on-board magnetometer which gives the Yaw output. I traced the problem to its power supply. Whenever I supply a regulated 3.3V directly to the board from a FTDI breakout (from SparkFun designed for ZigBee Modules), the sensor works fine. But, when I supply a regulated 5V from the same FTDI board and use the IMU's on-board voltage regulator, the magnetometer malfunctions and the Yaw output simply converges to 'SE' direction no matter in which direction you point the IMU.

Here, I am powering the IMU using the 5V output of the FTDI board and you can observe the malfunctioning Yaw output.


P.S. :- I have written a simple tutorial on how to get started with this IMU and changes in the code that I have made. You can read it here
http://pranjalchaubey.wordpress.com/2...

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