ros2-publisher-subscriber

ROS 2 publisher and subscriber code examples follow canonical patterns using rclpy nodes. Create a publisher node that sends messages to a topic and a subscriber node that listens and processes them. Both nodes require proper initialization, spinning to keep the node alive, and graceful shutdown—the Skill generates complete, ready-to-run Python examples for Humble.

ROS 2 pub/sub (publish/subscribe) is a topic-based messaging pattern where publishers send data and subscribers receive it asynchronously. Use it for decoupled, one-to-many communication—sensors broadcasting data, multiple nodes consuming the same stream, or any workflow where producers and consumers shouldn't know about each other directly.

Quality of Service in ROS 2 controls message reliability and delivery guarantees. The Skill implements QoS depth of 10, storing recent messages so late-joining subscribers receive historical data. Configure QoS policies in your publisher and subscriber to match your application's needs—reliability levels, durability, and history depth determine message persistence.

Yes. ROS 2 Humble code examples work across Tier 1 cloud and Tier 2 local environments. The Skill generates code compatible with both deployment contexts, allowing you to develop and test locally, then scale to cloud infrastructure without rewriting node logic or communication patterns.

ROS 2 nodes using rclpy require basic Python: class definitions, imports, and function calls. The Skill generates educational code samples that teach node lifecycle (initialization, spinning, shutdown) and message handling—suitable for learners new to ROS 2 who have introductory Python familiarity.

Yes. The Skill fetches current ROS 2 Humble API documentation before code generation to ensure examples conform to the latest conventions and APIs. Generated publisher and subscriber code follows Humble best practices and remains compatible as the framework updates.