MPU9250 9-Axis IMU Sensor Module (Gyro + Accelerometer + Compass) – SPI/I2C

The Ultimate Sensor Fusion Solution

The MPU9250 is the world’s most advanced 9-axis MotionTracking device designed for the low power, low cost, and high performance requirements of consumer electronics.2 It houses two chips in one tiny package: the MPU-6500 (3-Axis Gyro + 3-Axis Accel) and the AK8963 (3-Axis Magnetometer).

Why You Need 9 Axes

A standard gyroscope can tell you how fast you are turning, but it doesn’t know where it is facing. Over time, it “drifts.” By adding the Magnetometer, the MPU9250 can constantly correct this drift by locking onto the Earth’s magnetic field, giving you a stable and accurate “Heading” (Yaw) value. This is critical for Quadcopters, RC Planes, and Rover Navigation.

Versatile Connectivity

The module is easy to interface with microcontrollers like Arduino, ESP32, or STM32. It supports standard I2C (up to 400kHz) for simple wiring, as well as fast SPI (up to 1MHz) for high-speed data reading required by flight controllers.3

Key Features

• 3-in-1 Sensor: Gyroscope, Accelerometer, and Magnetometer on a single board.⁴

   

• Drift Correction: Magnetometer allows for absolute orientation (Compass Heading).

• Compact Design: Small footprint (typically 15mm x 25mm) fits in any project.⁵

   

• Onboard Regulator: Compatible with 3.3V – 5V power input.⁶

   

• High Precision: 16-bit ADCs for all 9 axes ensure smooth data.⁷

   

Technical Specifications

Pinout Guide (I2C Mode)

• VCC: 5V Power

• GND: Ground

• SCL: I2C Clock

• SDA: I2C Data

• NCS: Chip Select (Used for SPI, connect to VCC for I2C)⁸

  INT: Interrupt Pin