GY-273 Triple Axis Compass Module

The GY-273 Triple Axis Compass Module, powered by the HMC5883L digital magnetometer, delivers precise magnetic field and heading measurements in three dimensions. With an I²C interface, it integrates seamlessly into Arduino, Raspberry Pi, NodeMCU, and other microcontroller projects for electronic compasses, navigation, and orientation sensing.

Its high sensitivity and low noise design make it perfect for drones, robotic vehicles, and GPS-based navigation where accurate directional data is critical.

🔹 Key Features

• Three-Axis Magnetic Field Sensing: Measures Earth’s magnetic field along X, Y, and Z axes.

• I²C Digital Interface: Simple two-wire connection compatible with popular microcontrollers.

• High Resolution: Up to 12-bit data output for precise heading calculation.

• Low Power Consumption: Typical current draw of only 100 µA.

• Wide Measurement Range: ±8 Gauss for diverse applications.

• Compact & Lightweight: Ideal for mobile and battery-powered projects.

🔹 Technical Specifications

• Sensor Chip: Honeywell HMC5883L

• Interface: I²C (SDA, SCL)

• Measurement Range: ±1.3 to ±8 Gauss selectable

• Resolution: 0.73 mG/LSB (at ±1.3 Gauss)

• Supply Voltage: 3.0 V–5.0 V DC

• Current Consumption: ~100 µA (normal mode)

• Output Data Rate: 0.75 Hz to 75 Hz

• Dimensions: ~18 mm × 18 mm × 3 mm

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

🔹 Applications & Use Cases

• Navigation & GPS Projects: Combine with GPS modules for accurate heading.

• Robotics & Drones: Provide orientation data for Drones or autonomous robots.

• IoT & Smart Devices: Integrate with Arduino or NodeMCU for smart compass and tracking systems.

• Industrial Monitoring: Detect magnetic anomalies or machinery field changes.

• Education & Research: Demonstrate Earth’s magnetic field and orientation sensing.

🔹 Advantages for Makers & Engineers

• Easy connection to Arduino and Accessories or Raspberry Pi via I²C.

• Compatible with open-source libraries (Adafruit HMC5883L, QMC5883L-compatible drivers).

• Excellent sensitivity ensures stable compass heading even in low magnetic field environments.

🔹 Safety & Precautions

• Keep module away from strong magnets or high-current wires to prevent interference.

• Use stable, regulated power supply for accurate readings.

• Perform calibration to compensate for hard/soft iron distortions in final setup.

🔗 Helpful Internal Links

• Browse Electronics Components for integration with other sensors.

• Find tools for setup and testing in Tools and Accessories.

🎥 Video Tutorial

[YouTube tutorial link here]

📝 Product Summary

The GY-273 HMC5883L 3-axis magnetometer module provides accurate magnetic field and compass heading measurements, making it an essential sensor for Arduino, Raspberry Pi, robotics, drones, and navigation projects.