In this chapter, you worked on the steps required to configure your robot in order to use it with the navigation stack. Now you know that the robot must have a planar laser, must be a differential-wheeled robot, and it should satisfy some requirements for the base control and the geometry.
Keep in mind that we are working with Gazebo to demonstrate the examples and to explain how the navigation stack works with different configurations. It is more complex to explain all of this directly on a real, robotic platform because we do not know whether you have one or have access to one. In any case, depending on the platform, the instructions may vary and the hardware may fail, so it is safer and useful to run these algorithms in simulations; later, we can test them on a real robot, as long as it satisfies the requirements described thus far.
In the next chapter, you will learn how to configure the navigation stack, create the .launch files, and navigate autonomously in Gazebo with the robot...