Blog

News, Updates, & Resources

[ROS Q&A] 155 – How to use callback function in ROS Subscriber

by Alberto Ezquerro | Sep 17, 2018 | ROS Q&A

This video tries to answer the following question found in the ROS Answers forum: https://answers.ros.org/question/303105/how-to-use-callback-with-python/ In the video, we'll show how to handle and work with callback functions in a ROS Subscriber....

[ROS Q&A] 154 – How to Detect Collisions with static objects in Gazebo

by Miguel Angel | Sep 17, 2018 | ROS Q&A

In this video, we answer the following question: http://answers.gazebosim.org/question/20432/ros-gazebo-detecting-collision-with-a-static-object-using-contact-sensor/ We explain how to set up a robot so that you can detect collisions with static or non-static...

[ROS in 5 mins] 040 – What is in the directories src, build and devel?

by Bayode Aderinola | Sep 17, 2018 | ROS Tutorials

In this post, we will see what the ROS workspace directories src, build and devel contain. We'll also see how these directories are used in ROS workspace management. Let's go! Step 1: Create a Project (ROSject) on ROSDS Head to http://rosds.online and create a project...

[ROS in 5 mins] 039 – What is setup.bash or setup.sh

by Ruben Alves | Sep 17, 2018 | ROS Tutorials

Welcome again to a new post about ROS. In order to work properly, ROS uses the setup.bash files, but what are those files? In today's post, we're going to learn what are setup.bash (or setup.sh) files, where are they located and how to use them. Before we start, if...

[ROS in 5 mins] 038 – What is ROS_IP?

by Bayode Aderinola | Sep 17, 2018 | ROS Tutorials

In this video, we will see what ROS_IP is, and when to use it, in about five minutes! We'll be using a very simple simulation to demonstrate this. If you are a ROS beginner and want to learn ROS basics fast, we recommend you take any of the following courses on...