GY-291 ADXL345 I²C Accelerometer Module

Minimum Technical Features

• Ultra-low power consumption: 40 µA in measurement mode, 0.1 µA in standby @ 2.5V
• Free-fall detection
• Tap/Double Tap detection
• Flexible interrupt modes, mappable to either interrupt pin
• Measurement range selectable via serial command
• Bandwidth selectable via serial command
• Wide temperature range: −40°C to +85°C
• Shock survival: 10,000 g
• Voltage compatibility: Supports both 3.3V and 5V input
• On-board RT9161 power regulator, featuring a lower dropout voltage and faster transient response compared to the 1117 series, ideal for noisy power supply environments
• User-selectable resolution (up to 13-bit)

Description

• The ADXL345 is a compact, thin, low-power, 3-axis accelerometer capable of high-resolution (13-bit) measurement at up to ±16 g. It measures acceleration along X, Y, and Z axes.
• The GY-291 module integrates the ADXL345 sensor with voltage regulation and level shifting, making it compatible with both 3.3V and 5V microcontroller platforms such as Arduino, Raspberry Pi, and other development boards.
• It communicates through the I²C interface, allowing simple and efficient multi-device communication over a shared bus. Due to its small size, low power consumption, and high accuracy, the module is well-suited for motion sensing, gesture recognition, tilt detection, robotics, and wearable technology applications.

Technical Specifications

Applications

• Pointing devices
• Handsets and mobile devices
• Medical instrumentation
• Gaming and motion control
• Industrial instrumentation
• Personal navigation devices
• Hard disk drive (HDD) protection
• Fitness and sports equipment
• Defense and aerospace systems