Skip to main content

Module 1: The Robotic Nervous System (ROS 2)

Welcome to the first module of the Physical AI & Humanoid Robotics book! In this module, you'll learn about ROS 2 (Robot Operating System 2), the foundational middleware that enables communication and coordination in robotic systems.

Overview​

ROS 2 serves as the "nervous system" of robotic applications, providing the infrastructure for different components to communicate with each other. In this module, we'll cover:

  • Core ROS 2 concepts: nodes, topics, services, and actions
  • Python programming with rclpy
  • URDF (Unified Robot Description Format) for robot modeling
  • Practical exercises to build your first ROS 2 applications

Learning Objectives​

By the end of this module, you will be able to:

  • Understand the architecture and communication patterns of ROS 2
  • Create and run basic ROS 2 nodes in Python
  • Work with topics, services, and actions for inter-component communication
  • Define robot models using URDF
  • Execute practical exercises with simulated humanoid robots

Prerequisites​

Before starting this module, ensure you have:

  • ROS 2 Humble Hawksbill installed
  • Basic Python programming knowledge
  • Familiarity with command-line tools
  • Completed the book's introduction

Module Structure​

This module is organized into the following sections:

  1. Nodes, Topics, Services - Understanding ROS 2 communication primitives
  2. rclpy Basics - Python client library for ROS 2
  3. URDF Description - Robot modeling and description format
  4. Practical Exercises - Hands-on applications with humanoid robots

Next Steps​

Begin with the next section to dive into ROS 2 communication patterns. Each section builds on the previous one, so follow the sequence for the best learning experience.