turtlebot navigation using uwb

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Yes Pi is in same network as my PC but my PC is master and Pi is host. The Pi is in my turtlebot. i run roscore on my PC and master service is started. Now i start my pi with roslaunch bringup command and do my further work. How should i modify things?

You should add your PC hostname to the file /etc/hosts of your pi. Add the following line:

192.168.x.x     your-pc-hostname

(Fill with the correct information of your PC's hostname and IP.)

In the /etc/hosts of your PC, add the hostname of the pi

192.168.x.x      your-pi-hostname

ROS_MASTER_URI is an environment variable that determines where your master is located, in the case of your pi, your master is located on the PC, so this variable on the pi should be:

ROS_MASTER_URI=http://your-pc-hostname:11311/

To set this variable, you must use the export command in the terminal, like this:

export ROS_MASTER_URI=http://your-pc-hostname:11311/

This is valid only for the current bash, if you want this automatically set every time you run bash, you should add the line above to the file .bashrc located on your home folder.