ALLNET 4duino High Precision 3-Axis Magnetic Field Sensor (ALL_OY_3259-6)

The ALLNET 4duino High Precision 3-Axis Magnetic Field Sensor (ALL_OY_3259-6) is a versatile breakout board designed for accurate magnetic field measurements. Based on the HMC5883L sensor chip, it provides 3-axis sensing (X, Y, Z) with a selectable magnetic field range of ±1.3 to ±8 Gauss. Ideal for digital compass, navigation, robotics, and magnetic field detection applications, this sensor communicates via I2C interface and is compatible with Arduino, Raspberry Pi, ESP32, and other microcontrollers.

Advantages

High precision 12-bit ADC resolution ensures reliable data. Low power consumption (~1 mA active, ~100 µA sleep) makes it suitable for battery-powered projects. Built-in self-test and offset cancellation features enhance accuracy. Compact breakout board with mounting holes for easy integration.

Suitable for

• Digital compass and magnetometer projects
• Navigation and orientation systems
• Robotics for magnetic field detection
• Educational and hobbyist electronics

Key specifications

• Sensor Chip: HMC5883L
• Number of Axes: 3 (X, Y, Z)
• Interface: I2C (up to 400 kHz)
• Operating Voltage: 3V - 5V DC
• Magnetic Field Range: ±1.3 to ±8 Gauss (selectable)
• Resolution: 12-bit ADC
• Data Output Rate: Up to 160 Hz
• Sensitivity: 0.73 mG/LSB (at ±8 Gauss range)
• Pin Configuration: VCC, GND, SCL, SDA, DRDY
• Operating Temperature: -30°C to +85°C
• Module Type: Breakout Board

Recommendations

For best performance, use with a stable 3.3V or 5V power supply and connect via I2C with pull-up resistors. Calibrate the sensor in a known magnetic field for accurate readings.