GY-91 MPU9250 BMP280 10-DOF Sensor Module

Ten degrees of freedom sounds like a lot until it is broken down into what it actually measures: 3-axis acceleration, 3-axis angular velocity, 3-axis magnetic heading from the MPU9250, plus barometric pressure and altitude from the BMP280 - accelerometer, gyroscope, compass and altimeter combined on one board instead of four separate modules wired and calibrated independently.

Both I2C and SPI interfaces are available, so it drops into whichever bus a project's flight controller or microcontroller already uses, and the internal low-dropout regulator accepts 3V to 5V directly without external level-shifting. A 16-bit ADC across the motion-sensing axes gives fine enough resolution for real stabilization and navigation work rather than a rough approximation.

Common uses are drone and multirotor stabilization where orientation and altitude both matter, robotics navigation projects, and any build needing a full motion-and-altitude sensor suite without wiring four separate boards together.