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SparkFun ADXL345 Breakout

SparkFun ADXL345 Breakout

MPN: 09836
SparkFun Electronics
ADXL345 iMEMS® Accelerometer, 3 Axis Sensor Evaluation Board
Active111 in stock
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Overview

The SparkFun 09836 is a breakout board for the Analog Devices ADXL345, a small, thin, ultralow power 3-axis accelerometer. It supports high resolution (13-bit) measurement up to +/-16 g and provides digital output via I2C or SPI interfaces. This evaluation board simplifies integration by providing access to the sensor's advanced motion sensing functions like tap detection and free-fall sensing.

Why Choose This Part

This board features extremely low power consumption, drawing only 40uA during active measurement and 0.1uA in standby. The 13-bit resolution allows for 3.9 mg/LSB sensitivity across all sensing ranges, providing precise data for demanding tilt-sensing applications.

Applications

Mobile Device Motion Sensing
Detecting orientation changes and screen rotation in handheld battery-powered devices.
Free-Fall Detection
Triggering hard drive protection or emergency shut-off sequences during a drop event.
Tap and Double-Tap Recognition
Implementing gesture-based user interfaces for small wearables or industrial controls.
Low-Power Activity Monitoring
Using the built-in 32-level FIFO buffer and interrupts to wake a host MCU only when motion is detected.

Key Specifications

Contents Board(s)
Embedded No
Interface I2C, Serial, SPI
Sensitivity 256LSB/g, 128LSB/g, 64LSB/g, 32LSB/g
Sensor Type Accelerometer, 3 Axis
Sensing Range +/-2g, 4g, 8g, 16g
Voltage - Supply 2V ~ 3.6V
Utilized IC / Part ADXL345

Getting Started

To use this board, connect the VDD pin to a 2V to 3.6V power source and interface via the SPI or I2C pins. Engineers can utilize the SparkFun ADXL345 Arduino library to quickly configure the resolution and internal FIFO settings.

Also Consider

ADXL345 Analog Devices - The raw IC for high-volume production designs requiring the same sensing characteristics in a smaller LGA-14 package.