Compass Sensor Module HMC5883L GY271 3Axis

The HMC5883L GY-271 is a 3-axis digital compass (magnetometer) module used to measure the Earth’s magnetic field and determine heading direction. It communicates via I2C interface, making it easy to connect with Arduino, ESP32, Raspberry Pi, and other microcontrollers.

It detects magnetic field strength along X, Y, and Z axes, allowing accurate compass heading calculations.

🔹 Key Features

• 3-axis magnetic field sensing

• Digital output (I2C interface)

• High sensitivity & resolution

• Low power consumption

• Compact GY-271 breakout board

🔹 Technical Specifications

• Operating Voltage: 3.3V – 5V (module version)

• Interface: I2C

• Measurement Range: ±1.3 to ±8 gauss

• Resolution: Up to 12-bit

• Axes: X, Y, Z