Launching Turtlebot3 Noetic Simulation in a Rosject

[scklink]

I click on Rosjects. Then I click on Noetic and hit run. Then I enter:

source /opt/ros/noetic/setup.bash
source ~/simulation_ws/devel/setup.bash
roslaunch realrobotlab main.launch

into the terminal and get the following error:

This is preventing me from working on the Rosject. Any ideas?

[bayodesegun]

Which specific rosject are you trying to work on? You should copy that rosject itself.

I suspect you are trying to work on the ROS Basics in 5 Day Real Robot Project…

• Use the link given in the course to copy the rosject
• Go to “My Rosjects”. You should find that rosject there.
• Hit Run to open the rosject
• Review the instructions in the rosject’s notebook on how to start the simulation and work on the project

[scklink]

I started a new Rosject, selected Noetic and named it.

[bayodesegun]

New rosjects don’t have the Real Robot Lab simulation, which you were trying to launch. And it might not have the TB3 sim either, unless you select that sim when creating the rosject.

What are you trying to do exactly? Where did you get those commands?

As indicated earlier, if your rosject has a built-in simulation, the notebook will contain instructions on launching it. There are currently two ways to get in-built simulations:

1. Copy a rosject that has it
   • several Real Robot projects specified in the courses, like the ROS2 Basics in 5 Days course
   • public rosjects
   • any other rosject someone shares with you
2. When creating a rosject, select a pre-made simulation. When you open run the rosject,
   • the simulation is launched automatically
   • Check the notebook for instructions on working with the simulation