Sparkfun SEN-09836 Sensor module 1 pc(s) Compatible with (development kits): Arduino

This new version adds 2 clearance holes and an additional decoupling capacitor. The ADXL345 is a small, thin, low-power 3-axis MEMS high-resolution (13-bit) acceleration sensor with a resolution of up to +-16 g. The digital output data is formatted as 16-bit two-way complement and can be accessed either via an SPI (3 or 4-wire) or I2C digital interface.
The ADXL345 is well suited for measuring static acceleration of gravity in tilt sensor applications as well as dynamic acceleration by movement or impact. Its high resolution (4 mg/LSB) allows the measurement of slope changes below 1.0 degrees;
and several special sensor functions are available. The activity and inactivity measurement detects the presence or lack of movement and when acceleration on an axis exceeds a user-defined level. The tapping tap detects single and double tap drills. The free fall sensor system detects when the device falls down. These functions can be mapped to one of two interrupt output pins. An integrated, patent-pending 32-level first-in, first-out (FIFO) buffer can be used to store data and minimize host processor intervention. Low-power modes enable intelligent motion-based power management with threshold detection and active acceleration measurement at extremely low power loss.

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