I just completed a Raspberry Pi car setup shown in the image below.
With my car now assembled, I can run a simple Python script put the necessary GPIO pins HIGH or LOW and moves the car around successfully.
Now, I have added ROS to the mix and I want to drive the car around using the Turtlebot teleop package.
Roscore is launched and when I execute rostopic list I get the following:
Obviously, I am missing the /cmd_vel topic.
How can I make ROS aware of the robots' mobile base in order to begin driving it around, please?