Interfacing MPU9250 9-Axis IMU Sensor

MPU9250 is a 9-axis or 9 Degrees of Freedom (9 DOF) Inertial Measurement Unit IC from InventSense which incorporates 3-axis accelerometer, 3-axis gyro and a 3-axis magnetometer. The accelerometer and gyro are the same as the MPU6050 (6 DOF) sensor while the MPU9250 embeds an additional 3-axis magnetometer AK8963 from Asahi Kasei Microdevices (AKM) in a single package. AK8963 can be bought as a single IC.

IMUs are devices that measure kinetic parameters such as acceleration, angular motion etc with a combination of multiple accelerometers, gyros and magnetometers.