Package that contains Turtlebot models for Gazebo and a Warehouse world.
In general
TURTLEBOT3_MODEL=<model of the turtlebot> roslaunch t_gazebo launch_gazebo.lauch gui:=<"true" or "false" depending if you want to lauch gazebo with graphics or not>
For example
TURTLEBOT3_MODEL=waffle_pi roslaunch t_gazebo launch_gazebo.lauch gui:=true
The model that has the cameras added for the demo is the waffle_pi