ADXL345 3-Axis Digital Accelerometer Module – I²C & SPI Compatible

Description

ADXL345 3-Axis Digital Accelerometer Module – High-Precision Motion Sensing for Arduino, ESP32 & IoT Projects

The ADXL345 3-Axis Digital Accelerometer Module is a compact, low-power, and high-resolution motion sensor designed to measure acceleration along the X, Y, and Z axes. It is widely used in motion detection, tilt sensing, vibration monitoring, robotics, wearable devices, and IoT applications. Thanks to its digital communication interfaces, this sensor delivers accurate and noise-free readings, making it ideal for both beginner and professional projects.

The ADXL345 supports I²C and SPI communication, allowing seamless integration with popular development boards such as Arduino, ESP32, ESP8266, and Raspberry Pi. Its small form factor and low power consumption make it perfect for portable and battery-powered devices.

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Key Features & Benefits

• 3-Axis Acceleration Measurement: Measures motion on X, Y, and Z axes.

• High Resolution: Up to 13-bit resolution for precise motion detection.

• Selectable Measurement Range: ±2g, ±4g, ±8g, and ±16g.

• Digital Interfaces: Supports both I²C and SPI communication.

• Low Power Consumption: Ideal for wearables and battery-powered projects.

• Compact Module: Easy to integrate into small electronic systems.

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How It Works

The ADXL345 uses MEMS (Micro-Electro-Mechanical Systems) technology to detect acceleration. Inside the sensor, microscopic structures move when acceleration occurs, causing changes in capacitance. These changes are converted into digital signals, which are then transmitted to a microcontroller via I²C or SPI.

By analyzing acceleration data, your system can detect:

• Movement and orientation

• Tilt and inclination

• Free-fall events

• Vibration and shock

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Applications

1. Robotics: Motion tracking, balancing robots, and navigation.

2. IoT Devices: Motion-based automation and monitoring systems.

3. Wearable Electronics: Step counting, activity tracking, gesture detection.

4. Industrial Monitoring: Vibration and impact detection.

5. Educational Projects: Learning sensors, motion physics, and embedded systems.

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Technical Specifications

• Sensor Type: 3-Axis Digital Accelerometer

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

• Resolution: Up to 13-bit

• Interface: I²C and SPI

• Operating Voltage: 3.3V (module often includes regulator)

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

• Communication Speed: Up to 3.2 MHz (SPI)

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Compatibility

• Arduino (Uno, Nano, Mega)

• ESP32 / ESP8266

• Raspberry Pi

• Other microcontrollers with I²C or SPI support

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Why Choose ADXL345?

The ADXL345 Accelerometer Module offers an excellent balance of accuracy, power efficiency, and flexibility. Its configurable measurement ranges and digital output make it superior to analog accelerometers for modern IoT and robotics projects. Whether you are building a smart wearable, motion-controlled robot, or vibration monitoring system, this sensor delivers consistent and reliable performance.

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Summary

The ADXL345 3-Axis Digital Accelerometer Module is a powerful and versatile sensor for motion detection and acceleration measurement. With support for I²C and SPI, low power consumption, and high precision, it is an ideal choice for Arduino, ESP32, and IoT applications. Build smarter, motion-aware systems with this reliable accelerometer.