ADXL345 3-Axis Accelerometer Sensor Module

ADXL345 3-Axis Accelerometer Sensor Module

The ADXL345 Accelerometer Module is a compact, ultra-low power 3-axis motion sensor capable of measuring acceleration up to ±16g. It provides high-resolution (13-bit) digital output via I2C or SPI interface, making it ideal for Arduino, robotics, IoT, and motion-based applications.

This sensor can measure both static acceleration (gravity for tilt sensing) and dynamic acceleration (motion, vibration, shock).

🔍 Key Features

✔ Triple-axis (X, Y, Z) acceleration sensing
✔ Selectable measurement ranges: ±2g, ±4g, ±8g, ±16g
✔ I2C and SPI digital interface
✔ Ultra-low power consumption (40µA measurement mode)
✔ Free-fall detection
✔ Tap and double-tap detection
✔ Activity / inactivity detection
✔ Built-in 32-level FIFO buffer
✔ Wide operating temperature: -40°C to +85°C
✔ 10,000g shock survival
✔ Supports both 3.3V and 5V input

⚙ Technical Specifications

• Supply Voltage: 3.3V / 5V

• Interface: I2C, SPI (3 or 4 wire)

• Resolution: Up to 13-bit (Full Resolution Mode)

• Sensitivity:

  • X Axis: 28.6 LSB/g

  • Y Axis: 31.2 LSB/g

  • Z Axis: 34.5 LSB/g

• Power Consumption:

  • 40µA (measurement mode)

  • 0.1µA (standby @ 2.5V)

🎯 Applications

• Arduino & embedded projects

• Robotics motion sensing

• Tilt & inclination measurement

• Free-fall detection systems

• Gaming controllers

• Personal navigation devices

• Fitness tracking equipment

• Industrial instrumentation

• HDD protection systems