Hello I have been trying to follow the guide to get ROS2 to control the Lynx 6 DOF 900mm arm: GitHub - Lynxmotion/SES-P-ROS2-Arms
I am trying to control the real arm so I get to the point where I run the launch file ros2 launch pro_arm_moveit real_arm_control.launch.py but I am unable to make the arm move in real life. The LEDS are blue and I have the usb cable for the arm connected to the laptop I am using.
An error if it is useful here is [spawner_arm_trajectory_controller]: Could not contact service /controller_manager_list_controllers
Any help would be appreciated!
Hi BSilber1,
Thanks for reaching out. I’ve already forwarded your message to our support center (Zendesk / check your SPAM), and our team will be in touch with you as soon as possible.
In the meantime, we’re genuinely curious — what kind of task are you envisioning for the Lynxmotion PRO at NASA?
Is it intended for an exhibition, a demo, or something else?
All the best,
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I am an intern tasked with getting it to work inside a vacuum chamber for moving some test items in it
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That’s a nice project, we would love if you could post about it on our Robot section.
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Hello @BSilber1, that’s an exciting project!
There seems to be a problem with the trajectory controller.
Could you specify which ROS distro you are using?
Were you able to run the fake and simulated controllers?
When you installed the dependencies, did you get any errors while running this command?
rosdep install --from-path src -yi --rosdistro humble
When you are running the example, open another terminal and run this command
ros2 control list_controllers
Please share the output here 
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