ROS stands for robot operating system. It's a popular, open-source robotic middleware. It has a communication mechanism with topics that are similar to hashtags in social networks. In this video, it's used to control the turtle from the turtlesim tutorial via Mastodon posts. Repository: https://github.com/bluebbberry/ActivityROS

If you have suggestions for future features, feel welcome to suggest them in the comments. Thanks for watching!