To create ArUco marker

Go to -> https://chev.me/arucogen/

Dictionary: Original ArUco
Marker ID: 33

To install necessary packages

sudo apt-get install ros-melodic-realsense2-camera*
sudo apt-get install ros-melodic-aruco-ros*

To start realsense and ArUco marker 3D pose detection

roslaunch aruco_realsense realsense.launch
roslaunch aruco_realsense single.launch

To echo coming data

rostopic echo /aruco_single/pose