Is there an alternative way to connect to machines through the same ROS?
I want to connect two microcomputers (Odroid or Rasberry Pi) together by ROS.
As I found in http://wiki.ros.org/ROS/NetworkSetup , it seems that two machines can only be connected through network, such as wifi. Can I connect two ROS computer through physical connection, such as USB? If so, how to implement it in detail?
I am new for ROS. Thanks very much.