Build Your First REAL ROS2 Python Node 🔥 | Simulated Temperature Sensor (Mac M4 + Docker)
In Episode 1, we understood what ROS2 and DDS really are.
In this episode, we stop using demo nodes and build our own REAL ROS2 Python node from scratch.
No more “Hello World.”
We create a simulated temperature sensor that:
✔ Publishes structured ROS2 messages
✔ Uses std_msgs/Float32
✔ Runs on a timer
✔ Registers with DDS automatically
✔ Appears in rqt_graph
✔ Can be inspected using ros2 topic echo
✔ Works inside Docker on Mac M4
By the end of this video, you will understand:
How ROS2 Python packages work
How setup.py registers executables
What publishers actually do
How message types define topic structure
How DDS auto-discovers subscribers
How to visualize your node in rqt_graph
This is Episode 2 of our ROS2 From Zero to Real Robot series.
In the next episode, we connect ROS2 to a real Arduino and control hardware using topics.
If you're serious about robotics, autonomous systems, AI robots, or ROS2 development — this is your foundation.
Subscribe and build real robots with us.
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