Hello World ROS2 edX

ROS2 Humble learning and migration workspace based on the edX course Hello Real World with ROS: Robot Operating System.

This repository is public learning evidence. It collects course-style ROS2 packages, launch files, URDF/Xacro examples, Gazebo assets, navigation/SLAM configuration, custom messages/services, and small assignment nodes translated from ROS1 concepts into ROS2-style workflows.

Project Snapshot

Aspect	Summary
Main role	ROS2 coursework and migration evidence.
Source	Based on Hello Real World with ROS course concepts.
ROS stack	ROS2 Humble-style packages and launch files.
Topics covered	Publishers/subscribers, services/actions, URDF/Xacro, Gazebo, Nav2, SLAM, workcell simulation, custom interfaces.
Portfolio role	Supporting learning repo, not the main research demo.

Repository Structure

hrwros_week1/     ROS2 basics, messages, services, actions, and simple Python nodes
hrwros_week2/     URDF/Xacro robot description assignments
hrwros_week3/     Gazebo, Nav2, SLAM, workcell simulation, custom interfaces
*.sh              helper scripts for teleop and robot-description checks

What This Demonstrates

• ROS1-to-ROS2 migration practice.
• ROS2 package organization across multiple course weeks.
• Python nodes for basic ROS2 communication patterns.
• Custom message, service, and action definitions.
• URDF/Xacro robot and workcell modeling.
• Gazebo simulation assets and plugins from the course context.
• Navigation and SLAM configuration practice.

What This Is Not

• Not a polished research contribution.
• Not the main mobile manipulation repo.
• Not a benchmarked robotics system.
• Not a replacement for ros2-mobile-robotics-labs.

Installation

Clone this repository into the src folder of a ROS2 workspace:

mkdir -p ~/ros2_ws/src
cd ~/ros2_ws/src
git clone https://github.com/WikiGenius/hello_world_ros2_edx.git
cd ~/ros2_ws
rosdep install --from-paths src --ignore-src -r -y
colcon build
source install/setup.bash

Some packages may require course-specific Gazebo assets, plugins, or environment setup. Check each week/package before claiming a fully reproducible run.

Useful Entry Points

hrwros_week1/hrwros/
hrwros_week1/hrwros_assignments/
hrwros_week2/hrwros_assignments/
hrwros_week3/hrwros_nav/
hrwros_week3/hrwros_slam/
hrwros_week3/hrwros_gazebo/
hrwros_week3/hrwros_support/
hrwros_week3/hrwros_move_mobile_robot/

Relation To The ROS Portfolio

Repo	Role
ros2-mobile-robotics-labs	Main ROS2 organization hub for clean future labs.
husky-gazebo-image-capture	ROS2 Husky data-capture utility.
ros2-moveit-grasping-demo	ROS2/MoveIt2 grasping and manipulation execution demo.
ros-husky-traffic-sign-detection	Older ROS/catkin traffic-sign perception demo.

Limitations

• Course-derived workspace, not a finished product.
• Some launch flows may require external simulation assets or setup.
• No benchmark metrics are reported.
• Some packages are learning exercises rather than reusable libraries.

Citation / Acknowledgment

This repository is based on concepts and assignments from Hello Real World with ROS: Robot Operating System on edX. The contribution here is the ROS2-oriented organization, migration practice, and personal learning record.