ADXL345 Triple Axis Accelerometer Board – Digital Motion & Tilt Sensor with I2C/SPI Interface

Product Description:
The ADXL345 Triple Axis Accelerometer Board is a compact, high-resolution (13-bit) 3-axis digital accelerometer designed for precise measurement of static and dynamic acceleration. With a sensing range of ±2g to ±16g, this low-power motion sensor provides reliable performance for orientation, vibration, and motion detection applications.

Using I2C or SPI (3- or 4-wire) digital interfaces, the ADXL345 easily integrates with popular microcontrollers including Arduino, STM32, ESP32, and Raspberry Pi. It outputs 16-bit two’s complement data, enabling accurate and noise-free readings in a wide range of embedded systems.

The ADXL345 includes advanced motion features like tap/double-tap detection, activity/inactivity sensing, and free-fall detection, configurable via interrupt pins. An integrated 32-level FIFO buffer helps reduce processor workload, optimizing real-time data capture and motion analysis.

With ultra-low power consumption (40µA active) and 10,000g shock resistance, this module is ideal for consumer electronics, robotics, gaming devices, and industrial applications requiring stable, precise motion sensing.

Key Specifications:

• Sensor Type: 3-Axis Digital Accelerometer (ADXL345)

• Measurement Range: ±2g / ±4g / ±8g / ±16g

• Resolution: Up to 13-bit (4 mg/LSB)

• Interface: I2C and SPI (3- or 4-wire)

• Supply Voltage: 3.3V to 5V

• Power Consumption: 40µA (active), 0.1µA (standby @ 2.5V)

• Operating Temperature: −40°C to +85°C

• Shock Resistance: 10,000g

• Dimensions: 20.5mm × 15.5mm × 3.5mm

• Weight: 0.6g

Features:

• High-resolution 13-bit measurement up to ±16g

• Dual I2C/SPI communication interface

• Onboard RT9161 voltage regulator for stable operation

• Built-in FIFO buffer for efficient data logging

• Advanced tap, double-tap, activity, and free-fall detection

• User-selectable bandwidth and measurement range

• Excellent temperature stability and noise resistance

• Ultra-low power operation ideal for battery-powered systems

Applications:

• Motion and tilt detection in mobile and handheld devices

• Robotics, drones, and automation projects

• Gaming and virtual reality input systems

• Fitness and motion tracking wearables

• HDD protection and vibration monitoring

• Navigation and aerospace motion sensing

Package Includes:
1 x ADXL345 Triple Axis Accelerometer Board