AHRS Sensor Board and RGB LED Matrix
Here is another great tutorial from The Signal Path Blog. Now [Shahriar] does a great intro into two SparkFun's products: 9 degrees of freedom AHRS Sensor Board and an RGB LED Matrix Display which is serially controlled.
AHRS (Acceleration Heading Reference System) Sensor Board is a PCB with multiple sensors: a three axes accelerometer that measures linear acceleration, a gyroscope that measures angular acceleration and magnetometer for heading information. Another product review is of serially controlled RGB LED Matrix Display. You can see the video after the break and download source code for both demos at the "source" link under the video.
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