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Effective Robotics Programming with ROS - Third Edition by Aaron Martinez, Enrique Fernández, Luis Sánchez, Anil Mahtani

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Using a low-cost IMU – 9 degrees of freedom

 

"An inertial measurement unit, or IMU, is an electronic device that measures and reports on a craft's velocity, orientation, and gravitational forces, using a combination of accelerometers and gyroscopes, sometimes also magnetometers. IMUs are typically used to manoeuvre aircraft, including unmanned aerial vehicles (UAVs), among many others, and spacecraft, including satellites and landers."

 
 --Wikipedia

In this section, we will learn to use a low-cost sensor with 9 Degree of Freedom (DoF). This sensor has an accelerometer (x3), a magnetometer (x3), a barometer (x1), and a gyroscope (x3). 9DoF Razor IMU and the 9DoF sensor stick are low-cost IMU that can be used in your robotics projects. The two boards ...

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