Adafruit MMC5603 TRIPLE-AXIS MAGNETOMETER

The Adafruit MMC5603 magnetometer provides a precise and versatile way to measure magnetic fields. Magnetometers detect the direction of the strongest magnetic force and are commonly used to determine magnetic north or measure magnetic fields. When paired with a 6-DoF accelerometer and gyroscope, you can build a 9-DoF inertial measurement unit that determines orientation using Earth’s stable magnetic field.

The sensor is based on the MMC5603 chip, offering a ±30 Gauss measurement range with no range setting required and 20-bit resolution at sample rates up to 1000 Hz. This makes it ideal for measuring Earth’s magnetic field (about 0.6 Gauss) and for detecting basic magnets.

Adafruit has placed the chip and support circuitry on a breakout PCB that supports both 3.3V and 5V logic levels. Communication is easy over I2C with just two wires, or alternatively via SPI. STEMMA QT/Qwiic connectors enable solderless wiring, and Arduino and CircuitPython libraries are available for a smooth start.

The sensor comes fully assembled and tested.

Technical Details:

• I2C address: 0x30
• 3-axis AMR magnetometer
• Measurement range: ±30 Gauss (±3000 µT)
• 20-bit operation, 0.0625 mG per LSB resolution
• Total RMS noise: 2 mG
• Heading accuracy: 1°
• Frequency response: up to 1 kHz
• I2C up to 400 kHz, SPI supported
• Ultra-small package: 0.8 × 0.8 × 0.4 mm
• Automatic degaussing (SET/RESET)
• Compensation for temperature-induced variation
• Built-in temperature sensor

Included:

• Adafruit MMC5603 magnetometer
• Header strip

Links:

• Product page
• MMC5603 Datasheet (PDF)