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Accelerometer GY-45 MMA8452 Digital Triaxial Module

Accelerometer GY-45 MMA8452 Digital Triaxial Module

The MMA8452Q GY-45-52 is a high-performance, low-power, 3-axis digital accelerometer designed for motion detection and orientation sensing applications. Featuring 12-bit resolution and multiple embedded functions such as freefall detection and activity monitoring, this module is ideal for energy-efficient applications requiring motion-based wake-up and event triggering. It offers I2C communication and is compatible with both 3V and 5V systems.

Package Includes:

  • 1 x MMA8452Q GY-45-52 Accelerometer Module
  • 1 x Set of male header pins (unsoldered)

26.25 AED 26.25 AED Tax Included
26.25 AED Tax Included

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Features:

  • Supply Voltage: 1.95V – 3.6V
  • Interface Voltage: 1.6V – 3.6V
  • Selectable Ranges: ±2g, ±4g, ±8g
  • Output Data Rate: 1.56 Hz – 800 Hz
  • Noise Level: 99 µg/√Hz
  • 12-bit and 8-bit digital output
  • I2C digital output with up to 2.25 MHz clock
  • Two programmable interrupt pins
  • Built-in detection for freefall, pulse, and shake events
  • Auto-sleep/wake with dynamic ODR adjustment
  • High-pass filtered and non-filtered real-time data
  • Self-test functionality for device verification
  • Low power consumption (6 µA – 165 µA)
  • RoHS compliant

Specifications:

  • Module Model: GY-45-52
  • Power Supply: 3V – 5V (fully compatible with both)
  • Dimensions: 20.5 mm × 14.5 mm
  • Mounting Hole Diameter: 3 mm
  • Mounting Hole Pitch: 15 mm

Pinout:

MMA8452Q Pinout

Pin Number Pin Name Description
1 VCC_IN Power supply input (3V to 5V)
2 GND Ground
3 SCL I2C clock line
4 SDA I2C data line
5 INT1 Interrupt 1 output
6 INT2 Interrupt 2 output

Applications:

  • Electronic compass calibration
  • Real-time activity detection
  • Shake and tap detection
  • Freefall sensing in smart devices
  • Wearable motion detection
  • Power-efficient sleep/wake systems
  • Gaming input and gesture recognition

 

Features

  • LoRa SX1276 Wireless Module: Built around the SX1276 chip, the module employs LoRa technology, allowing for long-range data transmission and excellent penetration capabilities.
  • Configurable Output Power: The module's output power can be adjusted from +13 to +20 dBm (up to 100 mW) through software settings, providing flexibility in balancing communication distance and power consumption.
  • Low Power Consumption: During transmission, power consumption ranges from 50mA (+13 dBm) to 150mA (+20dBm), while in listening mode, it requires approximately 30mA, making it energy-efficient for battery-operated applications.
  • AES-128 Encryption Support: The module offers AES-128 encryption, ensuring secure and private data transmission, making it suitable for applications that require data confidentiality.
  • Multipoint Network Capabilities: It supports multipoint networks, allowing the establishment of individual nodes within the network for seamless and efficient communication.
  • Wide Power Supply Range: The module can be powered with a voltage range from 3V to 5V, making it compatible with various power sources and microcontrollers.

NOTE: It is important to solder a 16cm length of cable to the antenna pin before using it since not connecting any antenna can damage it. Optionally, the board has pads to solder an SMA connector with antenna thread.

Specifications

  • LoRa SX1276 wireless module with SPI interface (900 MHz)
  • Output power: +13 to +20 dBm up to 100 mW configurable by software
  • Consumption: 50mA (+13 dBm) to 150mA (+20dBm) in transmission, approx 30mA in listening
  • Supports AES-128 encryption
  • Supports multipoint networks with individual nodes
  • Power: 3 to 5V