The ADXL345 Triple Axis Accelerometer Sensor Module is a high-precision, low-power MEMS accelerometer designed to measure acceleration along X, Y, and Z axes. It is capable of detecting both static acceleration (gravity) and dynamic acceleration (motion, vibration, tilt), making it ideal for motion sensing, orientation detection, activity tracking, and IoT applications. With digital I²C and SPI interfaces, the ADXL345 is widely used in robotics, wearables, drones, and embedded systems.
Core Sensor Specifications
• Sensor Type: MEMS triple-axis accelerometer
• Sensor IC: ADXL345
• Measurement Axes: X, Y, Z
• Acceleration Ranges: ±2 g, ±4 g, ±8 g, ±16 g
Electrical & Interface
• Operating Voltage: 3.0 V – 5.0 V (module dependent)
• Logic Level: 3.3 V (5 V tolerant via onboard regulator on module)
• Communication Interfaces: I²C and SPI
• I²C Address: 0x53 (default)
• Interface Pins: VCC, GND, SDA/SDI, SCL/SCLK, CS, SDO
• Interrupt Pins: INT1, INT2
Performance Characteristics
• High-resolution 13-bit output
• Low noise and stable measurements
• Built-in motion, tap, free-fall detection
• Selectable output data rates up to 3200 Hz
Physical Characteristics
• Module Type: PCB-mounted accelerometer module
• Sensor Package: Small LGA MEMS package
• Compact and lightweight design
• Suitable for portable and embedded devices
Compatibility
• Arduino Uno / Nano / Mega
• ESP8266 / ESP32
• STM32, AVR, PIC microcontrollers
• Raspberry Pi (I²C / SPI interface)
Key Advantages
• Wide measurement range with high accuracy
• Dual digital interface (I²C and SPI)
• Low power consumption for battery applications
• Large ecosystem of libraries and examples
Technical Insights
• Measures acceleration including gravity
• Interrupts reduce MCU processing load
• Proper mounting orientation affects accuracy
• Calibration improves long-term precision
Applications
• Motion and vibration sensing
• Tilt and orientation detection
• Activity and step counting
• Robotics and drones
• Wearable and IoT devices
Pro Tip
• Use I²C mode for simple wiring
• Enable interrupts for motion-based wake-up
• Calibrate offsets for accurate static measurements
• Avoid mechanical stress on the PCB
Package Includes
• 1 × ADXL345 Triple Axis Accelerometer Sensor Module