The Apple iPad includes several sensors that are used to determine the tablet’s position and rate of movement. These include its GPS sensor and an accelerometer. All iPads except for the original model also include a gyroscope for precise measurement of iPad movements.
Sensor Fusion software
What Does It Do?
The gyroscope is familiar to many people as a toy top for children that consists of a central spinning disc with two surrounding rings. The inner ring is free-floating and can adjust its orientation. The outer ring is mounted or gravity-balanced on one point in a free-standing gyroscope. The spinning disc maintains the same orientation due to centripetal force while the outer rings move separately, allowing measurement of the orientation of the gyroscope through the movement of its rings.