At sudo apt install ros-galactic-.......... you should try changing galactic to humble because you are using that version if it's compatible then the install should go fine. I ever tried turtlebot3 by replacing foxy with humble and it worked, hope it helps you some.

Thank you for your answer! I‘ve already changed the distribution to humble for every sudo apt ros-galactic so it seems like that wasn’t the problem.

I made a mistake with Ctr+C & Ctrl+V in my instructions (I had two versions, for galactic and humble). It should be humble everywhere. Please update the commands in the question. From the errors you got - you have to have rosdep init before the rosdep update, I forgot about it, because I had it initialized before.

I already used rosdep init before whenever I type rosdep init this comes:

• ERROR: default sources list file already exists
  • /etc/ros/rosdep/sources.list.d/20-default.list
  • Please delete if you wish to re-initialize

I also tried using rosdep install -i --from-path src --rosdistro humble -y instead of sudo rosdep install -i --from-path src --rosdistro humble -y which led to this warning:

• ERROR: the following packages/stacks could not have their rosdep keys resolved to system dependencies:
• kobuki_node: Cannot locate rosdep definition for [ecl_sigslots]
• kobuki_core: Cannot locate rosdepdefinition for [ecl_time]
• kobuki_auto_docking: Cannot locate rosdep definition for [ecl_linear_algebra]

So I have checked here whether those are available for humble and they were not. How do you get those packages for humble?

Is it possible that its not working because I built from source and not with debian?

Did you clone the Kobuki packages? I built them from sources. Please refer to this GitHub issue regarding the ECL and Sophus problems: https://github.com/kobuki-base/kobuki_ros/issues/41#issuecomment-1186729600 I don't exactly remember what was needed, but it is possible for sure.

Yes, I have followed your setup step by step (cloned them into cd ~/tb2_ros2_nav2/ros2_ws/src). I tried cloning this humble-test fork of ecl_core into cd ~/tb2_ros2_nav2/ros2_ws/src where the kobuki packages are but the following error appeared:

• fatal: repository 'https://github.com/CNURobotics/ecl_core/tree/humble-test/' not found

Hi! I've been trying to get this all running in a docker container, and am experiencing the same issue as Djinn.
https://gist.github.com/Victor4X/3478b7d51b6b8c5b15d66e8d2357a757
The only thing I've changed from your original instructions is on line 19 in the Dockerfile. Installing everything related to "turtle*" felt excessive, and took a very long time.

Either way, the error I am getting is the same as Djinn:

updated cache in /root/.ros/rosdep/sources.cache
ERROR: the following packages/stacks could not have their rosdep keys resolved to system dependencies:
kobuki_auto_docking: Cannot locate rosdep definition for [ecl_linear_algebra]
kobuki_core: Cannot locate rosdep definition for [ecl_time]
kobuki_node: Cannot locate rosdep definition for [ecl_sigslots]

I have cloned all necessary packages and rosdep install -i --from-path src --rosdistro humble -y was successful but colcon build --symlink-install revealed that the sophus package had some errors so I have opened an issue and hope that after the problems are solved the colcon build will be successfull. I will keep you updated. Thank you very much for your help!

So I have not received an answer yet, if you have some spare time could you take a glance at the issue @ljaniec . Did you have this problem?

@Djinn I fixed this temporarily by commenting out ecl_enable_cxx_warnings() in cmakelists.txt in kobuki_core.
With sed:

sed -i 's/ecl_enable_cxx_warnings()/#ecl_enable_cxx_warnings()/g' src/kobuki_core/CMakeLists.txt

@Victor4X was colcon build --symlink-install successful afterwards? What about the command ros2 turtlebot2_bringup turtlebot_bringup.launch.py, was it working? Thank you for your answer!

And did you have those issues with compiling the kobuki_core packages or the ecl_linear_algebra packages like me?

I had the same issues as you I am pretty sure. They are resolved in the Dockerfile, however.
colcon build --symlink-install was successful, but ros2 turtlebot2_bringup turtlebot_bringup.launch.py says that turtlebot2_bringup isn't a valid command. I haven't had the time to actually look at how to use the turtlebot now. I just went to bed after getting the dependencies to build properly.. What would you suggest I try?
If you are comfortable with docker, I would love for you to mess around with it as well. gist

Since there is no undo for the sed command I will wait for my professors approval. I'll keep you updated!

Just wanted to come in and say that I got everything working, and updated the gist with instructions :)

@Victor4X I have just looked into your gist. First of all thank you very much for sharing ! Have you tried using the ros launch turtlebot2_bringup turtlebot_bringup.launch.py command or rather cloned the Turtlebot2 on ROS2 packages?