INTRODUCTION
Breakout board for the Analog Device ADXL345. The ADXL345 is a small, thin, low power, 3-axis accelerometer with high
resolution (13-bit) measurement at up to ±16 g. Digital output data is formatted as 16-bit twos complement and is accessible
through either a SPI (3- or 4-wire) or I2C digital interface.
The ADXL345 is well suited to measures the static acceleration of gravity in tilt-sensing applications, as well as dynamic
acceleration resulting from motion or shock. Its high resolution (4 mg/LSB) enables measurement of inclination changes less than
1.0°.Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion and if the
acceleration on any axis exceeds a user-set level. Tap sensing detects single and double taps. Free-fall sensing detects if the
device is falling. 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 to minimize host processor intervention. Low power modes enable intelligent
motion-based power management with threshold sensing and active acceleration measurement at extremely low power
dissipation.
SPECIFICATION
2.0-3.6VDC Supply Voltage
Ultra Low Power: 40uA in measurement mode, 0.1uA in standby@ 2.5V
Tap/Double Tap Detection
Free-Fall Detection
SPI and I2C interfaces
DOCUMENTS
DataSheet
Wiki Doc
Schematic
Arduino Library (IDE 1.0 compatible)
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