How to calibrate a magnetometer (MPU9250) – The Long Night
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Drift with MPU9250 - Sensors - Arduino Forum
GitHub - kian2attari/MPU-9250-ESP32-Library-Calibration-EEPROM: An easy-to-use library for the MPU-9250 that includes a straightforward calibration function for the Accelerometer, Gyroscope, and Magnetometer, and also allows you to customize magnetic ...