Python · 90 min
Debugging Challenge
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Camera · /camera/image_raw
320 × 240 · RGB · 8 HzWaiting for image…
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Python
Python not loadedComplete the TODOs, then Run. Tab indents; Escape then Tab leaves the editor. Stop terminates Python.
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Robot
Graph
TF frames
Parameters
Action progress
Use a second terminal to observe messages. Ctrl+C stops a stream.
On a real ROS 2 machine
On a real ROS 2 machine, use an ament_python package for Python or an ament_cmake package with rclcpp for C++. Declare dependencies in package.xml.
For C++, CMakeLists.txt uses find_package, add_executable, ament_target_dependencies and install(TARGETS ...) to build and install the node. Build with colcon build, source the workspace setup, then launch with ros2 run.
KineNest provides educational compatibility headers in the browser. The kinenest::report_* helpers record learning evidence; they are not native ROS 2 APIs. No package build runs here.
Real Python and browser-compiled C++ with an educational robotics runtime. Technical details