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[ROS Q&A] 075 – 3rd time getting stuck at “Building a ROS Package”

by Ruben Alves | Dec 7, 2017 | ROS Q&A

In this question we see how to solve the problem when running catkin_make on a Catkin Workspace: The specified base path /home/user/catkin_ws contains a CMakeLists.txt but catkin_make must be invoked in the root of workspace Q:...

[ROS Q&A] 074 – Aerodynamic parameters of lift-drag plugin part2

by Miguel Angel | Dec 4, 2017 | ROS Q&A

In this video we complete the answer given previously ( https://www.youtube.com/watch?v=I-dhwqxV7QM ) with a more complex shape. Here is the question:...

[ROS Q&A] 073 – How to add a simple wall to a Gazebo world

by Alberto Ezquerro | Dec 4, 2017 | ROS Q&A

Q: I created a custom gazebo world for my turtleBot containing several walls and saved it as a .world file. However when I run the world file the walls that i created do not load. A: Here you can see a simple example of how to launch a simple Gazebo world with...

[ROS Q&A] 072 – How to check your complex URDF

by Ricardo Tellez | Dec 4, 2017 | ROS Q&A

When developing for ROS, you will have to create the URDF of your robot. If your robot is complex and contains lots of different joints, you would like to test how is it going and if you are building the model properly. Here we provide you with a method to...

[ROS Q&A] 071 – How to use ApproximateTimeSynchronizer in Python

by Alberto Ezquerro | Dec 1, 2017 | ROS Q&A

Q: How to use ApproximateTimeSynchronizer in Python? Original question: https://answers.ros.org/question/81126/how-to-use-approximatetime-in-python/ Q: How to check that two topics are synced? Original question:...