ADXL345 Triple Axis Accelerometer (±2g/±4g/±8g/±16g)


This ADXL345 module is low power 3-axis accelerometer, it uses I2C & SPI communication protocol where user can adjust the sensitivity and bit resolution. The ADXL345 is well suited to measure 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°.

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Several special sensing functions are provided. Activity and inactivity sensing detect the presence or lack of motion and acceleration on any axis which exceeds a user-set level. Tap sensing detects single and double taps. Free-fall sensing detects if the device is falling. These functions can all be mapped to one of two interrupt output pins.


  • 3 to 5VDC Supply Voltage
  • Ultra Low Power: 40uA in measurement mode, 0.1uA in standby@ 2.5V
  • Sensitivity:
    1. X:28.6 LSB/g.
    2. Y:31.2 LSB/g.
    3. Z:34.5 LSB/g.
  • Tap/Double Tap Detection
  • Free-Fall Detection
  • SPI and I2C interfaces


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