1. IP setting wired connected -> wired settings -> New Profile -> IPv4 -> Manual -> Address, Netmask setting. 2. install velodyne package. $ sudo apt-get install ros-melodic-velodyne $ cd /home/catkin_ws/src $ git clone https://github.com/ros-drivers/velodyne.git $ caatkin_make 3. run. $ roslaunch velodyne_pointcloud VLP16_points.launch $ rosrun rviz rviz -f velodyne 4. rviz add -> PointCloud2 -..
