Unable to load joint_state_broadcaster or the joint_trajectory_controller

[VineetTambe]

Unable to load joint_state_broadcaster or the joint_trajectory_controller

[VineetTambe]

Understood!
I managed to get stuff working.
Adding the list of packages I required here if someone stumbles across a similar issue:

sudo apt install ros-humble-gazebo-ros2-control
sudo apt-get install ros-humble-ros2controlcli
sudo apt-get install ros-humble-joint-state-broadcaster ros-humble-joint-state-publisher ros-humble-joint-trajectory-controller

[VineetTambe]

I suspect that it might have to do something with the <robot_param_node>${namespace}/robot_state_publisher/robot_state_publisher</robot_param_node> line in the gazebo plugin?
Because that is the online I had to change in order to load the gazebo plugin.

[christophfroehlich]

For me it seems that ros2_controllers are not installed properly, if ros2 control list_controller_types does not list other controllers.

Is the original demo from this repository working?

[VineetTambe]

The original demo from the repository is also not working for me.
I get the exact same error.

I have installed ros2controlcli the following way - sudo apt install ros-humble-ros2controlcli

Is there a particular way to install ros2_controller explicitly??
I wasn't able to find the source which I could build or the sudo apt command

[VineetTambe]

Update:
I keep getting the same error even after installing ros_control for humble from source

[ahcorde]

Did you install ros-humble-ros2-controllers ? but if you need a specific controller just type

sudo apt-get install ros-humble-joint-state-publisher ros-humble-joint-trajectory-controller

You can see all the available controllers in this repository https://github.com/ros-controls/ros2_controllers

[christophfroehlich]

Update:
I keep getting the same error even after installing ros_control for humble from source

the controllers are in a different repository, as Alejandro already mentioned.
rosdep would be your friend ;)