The MPU-6050 3-Axis Accelerometer and Gyro Sensor module use MPU-6050 which is a little piece of motion processing tech. The MPU6050 datasheet is available in the
MPU6500 Gyroscope/Accelerometer/Digital Motion Processor(DMP) 6-axis Motion Sensor with I2C/SPI Interface features the MPU-9250, which is a multi-chip module (MCM) consisting of