[Industrial-Grade Magnetometer Compensation Chip] RM3100 High-Accuracy Magnetometer Geomagnetism, Magnet Field Sensor, SPI Interface, High-Revolution Electronic Compass Module for Arduino

Product document: https://wiki.wit-motion.com/english
(1)The RM3100 Geomagnetic Sensor is the highest performance sensor in its class with over 10 times better resolution and over 20 times lower noise than the leading Hall Efect sensor.
(2) It makes precise magnetic field measurements, which enables accurate calculation tracking.
(3) Geomagnetic sensors are used to measure the earth's magnetic field; however, in real world conditions, the earth's magnetic field is been distorted by other surrounding fields. System components such as batteries, shielding materials, or motors will distort the geomagnetic field near the sensors.
(4) An additional design challenge is the changing magnetic environment that temporarily distorts the field like metal parts in furniture, a passing car, or nearby cell phones and computers. Geomagnetic sensors must first be able to see the different magnetic fields in order for the designer to separate earth's magnetic distortion error correction a snap, and ultimately allowing you to easily and accurately calculate absolute orientation and heading.
Main Feature:
1 Input voltage: 3.3V
2 Consumption current: typical 10mA
3 interface:SPI
4 providing STM32 demon code