3 Axis Digital Accelerometer (ADXL345)

This ADXL345 module is low power consumption and a 3-axis accelerometer, it communicate with MCU with I2C or SPI communication with user selectable sensitivity and 10-13 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°. 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.

Features

• Ultra Low Power: 40uA in measurement mode, 0.1uA in standby@ 2.5V
• Tap/Double Tap Detection
• Free-Fall Detection
• SPI and I2C interfaces

Specification

• Working voltage: 3.0~5V
• Sensitivity:
  
  1. X: 28.6 LSB/g
  2. Y: 31.2 LSB/g
  3. Z: 34.5 LSB/g
• Suitable for Game controlsMotion detection

Wiki & External links

• Arduino code
• ADXL345 Datasheet.pdf
• Schematic