ROS Framework

Learn the Robot Operating System (ROS) - the industry-standard middleware for building modular, scalable robot software with nodes, topics, and services.

What is ROS?

The Robot Operating System (ROS) is an open-source middleware framework that provides tools, libraries, and conventions for writing robot software. Despite its name, ROS is not an operating system - it runs on top of Linux (primarily Ubuntu) and provides a structured communication layer between software components called nodes.

ROS 2 (the current generation) is built on the DDS (Data Distribution Service) communication standard, offering improved real-time performance, security, and multi-platform support compared to ROS 1.

Core ROS 2 Concepts

Setting Up ROS 2

# Install ROS 2 Humble on Ubuntu 22.04
sudo apt update && sudo apt install -y ros-humble-desktop

# Source the ROS 2 environment
source /opt/ros/humble/setup.bash

# Create a workspace
mkdir -p ~/ros2_ws/src
cd ~/ros2_ws
colcon build
source install/setup.bash

Your First ROS 2 Node

import rclpy
from rclpy.node import Node
from std_msgs.msg import String

class HelloRobot(Node):
    def __init__(self):
        super().__init__('hello_robot')
        self.publisher = self.create_publisher(String, 'greetings', 10)
        self.timer = self.create_timer(1.0, self.publish_message)

    def publish_message(self):
        msg = String()
        msg.data = 'Hello from AI Robotics!'
        self.publisher.publish(msg)
        self.get_logger().info(f'Published: {msg.data}')

def main():
    rclpy.init()
    node = HelloRobot()
    rclpy.spin(node)
    node.destroy_node()
    rclpy.shutdown()

Essential ROS 2 Packages for AI Robotics