Add motion and orientation sensing to your Arduino project with this affordable 6 Degree of Freedom (6-DoF) sensor with sensors from ST. The board includes an LSM6DS33, a 6-DoF IMU accelerometer + gyro. The 3-axis accelerometer, can tell you which direction is down towards the Earth (by measuring gravity) or how fast the board is accelerating in 3D space. The 3-axis gyroscope that can measure spin and twist. This chip isn't the newest motion sensor, but it is well-established and comes at a great price.