Inertial measurement unit (IMU)
An Inertial measurement unit (IMU) is an electronic device which measures and reports body's inertia, orientation and angular speed. It accomplishes these tasks with use of several instruments such as accelerometers, gyroscopes and magnetometers all of which have capabilities of measuring data in three degrees of freedom. IMU as an instrument is essential in the engineering world since it is a crucial part of any project. Areas where IMUs are quite important are those where we have use for direct feedback on the speed, orientation and position of the body. That makes it crucial in use for design of robots, drones, satellites etc. 
Each sensor in the IMU supports a wide spectrum of ranges: the accelerometer’s scale can be set to