Detail about Acceleration Module
Provide several measurements using a single I2C connection. Really small and cheap. Comes with two connectors, straight and L- shaped, providing more possibilities of positions to attachment. There are plenty of documentation on the web if you search separatelly for each component: L3G4200D is an Angular Rate Sensor, it measures the speed the device rotates (radians per second). ADXL345 is an Accelerometer (in g's) HMC5883L measure the magnetic field related to each of the 3 axis (X, Y, Z) BMP085 measures atmospheric pressure and temperature.
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