### GY-91 MPU9250 (BMP280) Overview

1. **Integrated Sensor Module**: Combines MPU9250 (IMU) and BMP280 (barometer) sensors on a single board for comprehensive motion sensing and atmospheric pressure measurement.

2. **MPU9250 (IMU)**:

- **Functionality**: Inertial Measurement Unit (IMU) comprising accelerometer, gyroscope, and magnetometer for motion sensing and orientation tracking.

- **Applications**: Used in motion-based applications such as navigation, gesture recognition, and stabilization.

3. **BMP280 (Barometer)**:

- **Functionality**: Measures atmospheric pressure and temperature with high accuracy.

- **Applications**: Used in weather stations, altimeters, and IoT devices for environmental sensing.

### Typical Uses:

- **Motion Tracking**: Provides orientation data for drones, robots, and virtual reality (VR) systems.

- **Environmental Sensing**: Monitors atmospheric pressure and temperature changes in weather monitoring and altitude tracking applications.

- **IoT and Wearables**: Integrated into IoT devices and wearables for context-awareness and environmental data collection.