Скачать или смотреть What are nodes and topics in ROS and how to use them

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In this video we are going to focus on what nodes are and how they communicate through topics.
You will learn how to visualize the publisher subscriber architecture through grap rapresentation.
We will lanch the ROS master and you are going to practice with a talker and listener node dealing with Hello World message.

Topics:
00:00 Introduction
00:51 Example of nodes in robotics arm
01:33 The ROS master
02:15 What is the parameter server
02:54 Generic example of node communication through topic and the role of ROS master
04:31 Example of publisher subscriber architecture of a robotic arm
05:21 What is a node a node in practice?
05:58 Libraries that allows you to programm in Python and C++
07:30 How to run talker and listener run
10:14 How to visualize the publisher subscriber architecture via rqt_graph

Description of the channel:
This channel is about learning robotics with ROS (Robot Operating System).
Whether you are a beginner or an expert, here you can learn from basic robotic programming functions to real industrial applications.
The approach will be hand on and step by step, meaning that you will be able to apply these topics for your application and master your carrer.
You will learn how to use ROS packages for deploying commercial industrial robots and even robot that you have designed from scratch.
You can learn how to modify the ROS packages or create new one programming new feature for your robot depending on the application you have. The channel teaches you how to programm a robot using python and C++ as code language.