how to send and receive msg for a kobuki?
hi,
i want to control the kobuki without sensors. i only know how to control it using keyboard and set goals using 2D Nav Goal in rviz. Now i have the goal msg "x,y,z," and "quaternion" one by one. But i don't know how to send it and receive it. Do I need to write a lot of code ? Do you have any idea or dose there have a tutorial about this? Thank you very much!