The HMC5983 is a precision 3-axis digital magnetometer designed for embedded systems requiring accurate heading and magnetic field measurements. It offers enhanced temperature compensation and high-speed I²C/SPI communication, making it ideal for robotics, UAVs, and electronic compasses.

Specifications

• Sensor IC: HMC5983 (upgrade of HMC5883L)
• Measurement Range: ±8 Gauss (configurable ±0.88 to ±8.1 Gauss)
• Resolution: 0.073 mG/LSB (typical)
• Axes: 3-axis (X, Y, Z)
• Interface: I²C (up to 3.4 MHz)
• Operating Voltage: 3.3 V DC
• Logic Level: 3.3 V
• Output Format: 16-bit digital data
• Update Rate: Up to 220 Hz
• Temperature Sensor: Integrated, for compensation
• Operating Temperature: –40 °C to +85 °C
• Typical Current Draw: ~100 μA (measurement mode)

Features

• High-precision 3-axis magnetic field sensing
• Temperature-compensated output for stable heading data
• I²C interface for flexible MCU integration
• Compatible with Arduino, STM32, ESP32, and Raspberry Pi
• Ideal for electronic compasses, tilt-compensated heading, and field mapping
• Common use cases:
  - UAV and drone navigation
  - Robotics and autonomous vehicles
  - Magnetic anomaly detection
  - STEM sensor kits and orientation tracking