Attention: Answers.ros.org is deprecated as of August the 11th, 2023. Please visit robotics.stackexchange.com to ask a new question. This site will remain online in read-only mode during the transition and into the foreseeable future. Selected questions and answers have been migrated, and redirects have been put in place to direct users to the corresponding questions on Robotics Stack Exchange. Additional details are available here.

Revision history [back]

No, you can't directly run ROS 1 nodes in ROS 2, ROS 2 is a complete rewrite without built-in backwards compatibility with ROS 1. A quick search would have pointed you to the comprehensive migration guide:

https://docs.ros.org/en/foxy/Contributing/Migration-Guide.html

Having said that, you could run ROS 1 nodes next to ROS 2 using the ROS 1 bridge

ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.