When I try to run exercise 3.1, I always get the error as shown below:

[ERROR] [WallTime: 1510547630.489843] [126.282000] Failed to load joint1_position_controller

Can anyone help point out what I should check?


asked 13 Nov '17, 04:38

hsianglin124's gravatar image

accept rate: 0%


Can you provide more details, please? Which course are you working on?

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answered 24 Mar '18, 18:48

marcoarruda's gravatar image

marcoarruda ♦♦
accept rate: 18%

He is doing the course ROS Control 101. There is a practise where you should create your own controller for rrbot.

I actually met the same problem as he did. I think the problem is with my launch file. Here is my launch file, please help me too <launch>

<rosparam file="$(find my_controller)/config/my_controller.yaml" command="load"/>

<node name="controller_spawner" pkg="controller_manager" type="spawner" respawn="false" output="screen" ns="/rrbot" args="joint1_position_controller joint2_position_controller joint_state_controller"/>

<node name="robot_state_publisher" pkg="robot_state_publisher" type="robot_state_publisher" respawn="false" output="screen"> <remap from="/joint_states" to="/rrbot/joint_states"/> </node>


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answered 16 Aug '18, 14:04

peixuan_gao%40163.com's gravatar image

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Hi There, have you resolved this issue? I encountered the same issue in Exercise 3.1. Thank you for your time.

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answered 01 May, 22:14

cao237%40purdue.edu's gravatar image

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question asked: 13 Nov '17, 04:38

question was seen: 656 times

last updated: 01 May, 22:14

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