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Hi,

Yes, ROS_MASTER_URI is your turtlebot laptop ip address. You need to export ROS_HOSTNAME as well in both turtle bot laptop and your workstation laptop. i.e.

Append below statements in your .bashrc file -->

1. For Turtle bot laptop:

export ROS_MASTER_URI=<turtle bot="" ip="" address="">:11311 export ROS_HOSTNAME=<turtle bot="" ip="" address="">

1. For Workstation laptop:

export ROS_MASTER_URI=<turtle bot="" ip="" address="">:11311 export ROS_HOSTNAME=<turtle bot="" ip="" address="">

1. Now try pinging one from another.

2. Run roscore in one and do rostopic list then.

3. rostopic /echo diagnostics in another one.

It should work. Hope this helps !!