This page deals with running ROS across multiple machines . This involves choosing one machine to be the master.

Also see ROS network setup

In this scenario, we want to control a mobile robot with a joystick plugged in a a fixed machine. How to do it ? Suppose the master is up and running. How to set up the remote machine :

• Network issues:
  • Make sure that both machines are on the same network, e.g. wifibotlapap
  • Make sure the master can be reached by its name. For example, add the following line in /etc/hosts:

    192.168.1.106 wifibot-lab

• Install the joystick node:

  sudo apt-get update
sudo apt-get install ros-hydro-joy

• Export the master and declare the client IP to ROS:

  export ROS_MASTER_URI=http://wifibot-lab:11311
export ROS_IP=192.168.1.100

• Run the joystick node:

  rosrun joy joy_node

• You can also run rviz on the slave, to visualize the robot state

  rosrun rviz rviz

In case of trouble, see ROS network setup