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RoboticsMarch 15, 2026
Getting Started with ROS 2: A Beginner's Guide
# Getting Started with ROS 2
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ROS 2 (Robot Operating System 2) is the industry-standard framework for building robot software. Unlike its predecessor, ROS 2 is built on DDS middleware, offering real-time capabilities and improved security.
## Installationgit status
First, install ROS 2 Humble on Ubuntu 22.04:
```bash
sudo apt install ros-humble-desktop
```
## Your First Node
Create a simple publisher node in Python:
```python
import rclpy
from rclpy.node import Node
from std_msgs.msg import String
class MinimalPublisher(Node):
def __init__(self):
super().__init__('minimal_publisher')
self.publisher_ = self.create_publisher(String, 'topic', 10)
timer_period = 0.5
self.timer = self.create_timer(timer_period, self.timer_callback)
def timer_callback(self):
msg = String()
msg.data = 'Hello, ROS 2!'
self.publisher_.publish(msg)
```
This is just the beginning — ROS 2 has a rich ecosystem of packages for navigation, perception, and manipulation.