Hello,
I have designed, manufactured and made available commercially a (very) low-cost LiDAR robot kit for ROS2 beginners.
This is a little differential robot with 120mm base and a 2D LiDAR. The bot runs micro-ROS on ESP32 Arduino and ROS2/Nav2 Iron on a local PC. A product video short is available here.
This robot comes with a video instruction series explaining step-by-step, “from-scratch” the robot assembly, firmware and software setup, bring-up, mapping/SLAM, autonomous navigation and frontier exploration.
Extensive troubleshooting instructions and a technical support forum are available as a help resource.
I hope this kit can be useful for the ROS community.