ROS Melodic Sourcing

george kollamkulam

Hi,

We have a Starling 2 (VOXL 2 autopilot running PX4) and wanted to run SLAM. We have some files of ROS Melodic installed (including voxl_mpa_to_ros_node), but we're unable to source ROS Melodic (it appears that there is no such file or directory when we tried "source /opt/ros/melodic/setup.bash". What could be the issue here and what would the next steps would be?
We also wanted to understand if we can uninstall ROS Melodic and install ROS2 Humble (or other distributions) on the same VOXL2 autopilot as ROS2 works better with our pipeline.

Thanks!

teddy.zaremba

Hi,

ROS2 Melodic requires Ubuntu 20.04 and the VOXL runs Ubuntu 18.04. You could install ROS2 Foxy following this guide.

$ apt-get install voxl-ros2-foxy
$ source /opt/ros/foxy/local_setup.bash

Likewise you can't directly use ROS2 humble on the VOXL because it requires Ubuntu 22.04. We usually run ROS2 inside a docker container. Check out the prebuilt ROS2 images you can have as the base (https://hub.docker.com/_/ros/).

Let me know if that helps!

Ted