[/scan_raw] does not appear to be published yet

[Blueicaro]

Hello, when I execute br2_tiago (ros2 launch br2_tiago sim.launch.py) and then I try ros2 topic echo /scan_raw I got the error thar is not published. I checked the list of topic (ros2 topic list) and the scan_raw is not present. Here is the log

launch.log

Any idea, thanks

/Jorge

[fmrico]

Hi @Blueicaro

I see that your controllers are failing at startup. What distro are you using? What branch of this repo are you using?

Best

[Blueicaro]

Hello, I using Ubuntu 20.04.6 LTS

I using foxy-devel branch

B.R.

[Blueicaro]

Hello, I found the problem and I fixed it. The problem was with the dependence. I ran rosdep update as you said in the book. But Foxy is EOL (end of life), so rosdep skipped it, as you see: Skip end-of-life distro "ardent" Skip end-of-life distro "bouncy" Skip end-of-life distro "crystal" Skip end-of-life distro "dashing" Skip end-of-life distro "eloquent" Skip end-of-life distro "foxy" Skip end-of-life distro "galactic" Skip end-of-life distro "groovy" Add distro "humble" Skip end-of-life distro "hydro" Skip end-of-life distro "indigo" Add distro "iron" Skip end-of-life distro "jade" Skip end-of-life distro "kinetic" Skip end-of-life distro "lunar" Skip end-of-life distro "melodic" Add distro "noetic" Add distro "rolling" updated cache in /home/jetson/.ros/rosdep/sources.cache So I ran again with option --rosdistro=foxy which set ros distro to use. After that, I ran rosdep install --from-paths src --ignore-src -r -y and I compiled every thing again with colcon build --symlink-path as you explains in the book Now every is running nice

/Jorge P.D. other option to avoid rosdep skip EOL distros is use --include-eol-distros as parameter

[fmrico]

Thanks @Blueicaro

So we can close... Reopen if there is more issues here ;)