ROS 2 lifecycle nodes explained: states, transitions and launch
ROS 2 lifecycle nodes add a managed state machine to drivers and servers: configure, activate, deactivate and clean up in a deliberate order.
#architecture
3 posts
ROS 2 launch files explained: nodes, parameters and event handlers
ROS 2 launch files start a whole system: nodes, parameters, remappings, namespaces and event handlers. How launch and launch_ros split the work.
ROS 2 topics vs services vs actions
Topics stream continuous data, services answer a request, actions run long tasks with feedback. How the three ROS 2 interfaces work, and how to choose.