GY-271 HMC5883L/QMC5883L Triple Axis Compass Magnetometer Module (3V-5V) The GY-271 Triple Axis Compass/Magnetometer Module is an essential sensor for achieving accurate directional sensing and navigation in your electronics projects. Equipped with the high-performance HMC5883L (or compatible QMC5883L) chip, it delivers reliable three-dimensional magnetic field data, allowing your Arduino, Raspberry Pi, or other microcontroller projects to easily function as an electronic compass. ✨ Key Features & Benefits Precise Triple Axis Sensing: Provides X, Y, and Z-axis magnetic field strength data for full-range orientation and heading detection. Standard IIC Communication: Utilizes the widely adopted $I^2C$ (IIC/TWI) protocol, enabling fast connection and communication with the host controller using only two signal lines. Wide Voltage Compatibility: Supports a 3V to 5V power supply, making it directly compatible with most mainstream microcontroller systems like Arduino UNO and Mega. Compact Size: The module's compact design ($13.2mm \times 14.4mm$) allows for easy integration into space-constrained applications such as drones, robotics, or wearable devices. 🔧 Technical Specifications Specification Details Module Model GY-271 Sensor Chip HMC5883L or QMC5883L Operating Voltage 3V - 5V DC Communication Protocol Standard IIC ( $I^2C$ ) Measuring Range $\pm 1.3$ to 8 Gauss Module Dimensions $13.2mm \times 14.4mm$ Platform Compatibility Arduino, Raspberry Pi, STM32, etc. 📦 Package Includes 1 × HMC5883L / QMC5883L GY-271 Triple Axis Compass Magnetometer Sensor Module Header Pins Set (for soldering connection)