Welcome to Phase 2: Applied Robotics Systems.
In Phase 1, you learned the core building blocks of ROS 2. Now we will use those concepts in practical robotics workflows.
This phase moves into robot simulation, URDF, Xacro, Gazebo, RViz, TF2, LiDAR, camera sensors, ROS-GZ Bridge, SLAM, mapping, AMCL localization, Nav2, behavior trees, odometry, EKF, MoveIt2, OpenCV, YOLO, DeepSORT, object counting, and full multi-node system architecture.
Some topics in this phase are more advanced, so do not worry if everything does not feel clear in the first attempt. Robotics is a system-level subject. The understanding becomes stronger as you connect simulation, sensors, motion, perception, navigation, and architecture together.
Before starting this phase, make sure you are comfortable with ROS 2 workspaces, packages, nodes, topics, services, parameters, launch files, YAML files, and basic debugging commands from Phase 1.
By the end of Phase 2, you should understand how different robotics components work together to form a practical ROS 2 robotic system.