User Manual

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IMU sensors are one of the most inevitable type of sensors used today in all kinds
of electronic gadgets. They are seen in smart phones, wearables, game controllers,
etc. IMU sensors help us in getting the attitude of an object, attached to the sensor
in three dimensional space. These values usually in angles, thus help us to determine
its attitude. Thus, they are used in smart phones to detect its orientation. And also
in wearable gadgets like the nike fuel band or fit bit, which use IMU sensors to track
movement.
How does it work?
IMU sensors usually consists of two or more parts. Listing them by priority, they are :
accelerometer, gyroscope, magnetometer and altimeter. The GY-521 is a 6 DOF
(Degrees of Freedom) or a six axis IMU sensor, which means that it gives six values
as output. Three values from the accelerometer and three from the gyroscope. The
GY-521 is a sensor based on MEMS (Micro Electro Mechanical Systems) technology.
Both the accelerometer and the gyroscope is embedded inside a single chip. This
chip uses I2C (Inter Integrated Circuit) protocol for communication
How does an accelerometer work?