Product Overview
The breakout board for the ADXL345 chip, developed by Analog Devices, employs a 3-Axis Digital Accelerometer capable of measuring +-2 g/+-4 g/+-8 g/+-16 g. The ADXL345 is a compact, slender, and energy-efficient accelerometer that operates in a 3-axis configuration, delivering high-resolution (13-bit) measurements up to +-16g. The digital output data is presented in a 16-bit twos complement format and can be accessed through either an SPI (3- or 4-wire) or I2C digital interface.
Primarily designed for mobile device applications, the ADXL345 accurately gauges static gravity acceleration in tilt-sensing scenarios and dynamic acceleration resulting from motion or shock. Its impressive high resolution (4 mg/LSB) facilitates the measurement of inclination changes less than 1.0.
The device offers various specialized sensing functions, including activity and inactivity sensing to detect motion presence or absence, the ability to identify taps (single and double), and the capability to detect free falls. These functions can be assigned to either of the two interrupt output pins. Additionally, an integrated and patent-pending 32-level First In, First Out (FIFO) buffer is available for data storage, minimizing the need for host processor intervention.
The ADXL345 incorporates low-power modes, enabling intelligent motion-based power management with threshold sensing and active acceleration measurement at extremely low power dissipation.
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Single tap/double tap detection
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Activity/inactivity monitoring
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Free-fall detection
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Supply voltage : 3.3V/5V
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Ultralow power: as low as 23 uA in measurement mode and 0.1 uA in standby mode at VS = 2.5 V (typical)
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SPI (3- and 4-wire) and I2C digital interfaces
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Dimensions: 32.5 x 22 mm
7Semi ADXL345 Breakout Board Dimensions
7Semi ADXL345 Breakout Board I2C Connections to Arduino
7Semi ADXL345, ADXL335 and LIS3DH 3-Axis Accelerometer Breakout Comparison Table
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