Pranjal Chaubey
Member Since: December 3, 2008
Country: United States
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This is some really serious innovation! Great idea this one....!
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I had an elaborate discussion with the Sparkfun's technical team on the magnetometer issue and what we figured out was that the problem was related to the layout and power supply of the board and not the magnetometer itself! You can check out the problem and IMU's behavior here on my YouTube Channel :-
9DoF Razor IMU from SparkFun Malfunctioning
Go through the video's description to understand what was happening and this is how I made it work (read the video description):-
9DoF Razor IMU from SparkFun Functioning ProperlyDon't dump Sparkfun so early, I am sure they must have rectified the power supply and layout issue (which was affecting the magnetometer output) in this new version.
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Its 150mA Micrel regulator.
MIC5205
SparkFun 9DoF Razor IMU Made Easy -
Here's a nice tutorial I wrote some time back to get this IMU working (the older version), newbies will find it useful :-
SparkFun 9DoF Razor IMU Made Easy -
When are we going to see the new version of Razor IMU?
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This part DID have some inherent problems related to its power supply and the magnetometer. I had a really long set of email discussions I had with your tech support.
The magnetometer malfunctions when the IMU is powered from its own regulated supply. It works fine if you feed it 3.3V directly from some other source, the XBee USB explorer board for example. -
This is what you wanted, a step-by-step tutorial
Razor IMU Step by Step Tutorial -
I have written a Tutorial on this, you might want to have a look
http://pranjalchaubey.wordpress.com/2011/04/14/razor-imu/ -
If I remember correctly, these modules have a power setting register. You can use a utility like XCTU from Digi to check(and set) if your module is set to work at max power or not.
Also, which voltage regulator you are using? It should be able to supply more than 215mA. -
Any ZigBEE will do as long as you are able to configure the correct baud rate. I have the 9DoF Razor and it works perfectly fine with my short range (100m) and long range (XBee PRO 900) modules. Just set the UART baud rate of the modules to 57600.
No public wish lists :(