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2019-07-09 16:06:35 -0600 edited question Issue with ros::Time when using /use_sim_time

Issue with ros::Time when using /use_sim_time Hello everyone, I have the following issue that ros::Time::now()` always

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2019-07-09 16:05:37 -0600 asked a question Issue with ros::Time when using /use_sim_time

Issue with ros::Time when using /use_sim_time Hello everyone, I have the following issue that ros::Time::now()` always

2019-05-20 01:28:17 -0600 marked best answer robot_state_publisher posting wrong tf tree (missing connections)

Dear ROS community,

I have the following problem:

I'm trying to simulate a robotic leg using ROS kinetic and Gazebo.

In order to get information about the current frame of each link I'm using the robot_state_publisher. He's a subscriber of the /joint_states topic and also receives information from the parameter robot_description which is loaded as an parameter using the xacro file, which describes the leg construction with all it's links and joints. He then publishes to the topic /tf

When I use the rqt_tf_tree to check the tf_tree I have 3 unconnected tree structures as a result, two Joints are missing. I first thought the xacro files would be incompleted, but I checked the robot_description by using $ rosparam get /robot_description

E.g.

<joint name="joint_B1" type=" continuous">
  <origin rpy="0 0.512690467 0" xyz="-0.05 -0.005 0"/>
  <parent link="upper_leg"/>
  <child link="connector_2"/>
  <axis xyz="0 1 0"/>
  <dynamics friction="0"/>
  <limit effort="10" velocity="10"/>
</joint>

is one of the missing connections.

Do you guys have any suggestion where my problem could be?

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2018-07-19 12:49:10 -0600 commented question Issue when periodically republishing Joint Trajectory messages

yes the node is starting to republish both messages A and B, however, he should stop republishing A when B arrives

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2018-07-18 11:29:53 -0600 edited question Issue when periodically republishing Joint Trajectory messages

Issue when periodically republishing Joint Trajectory messages Hello ROS community, I am trying the following thing: I

2018-07-18 11:13:42 -0600 commented answer Issue when periodically republishing Joint Trajectory messages

Thanks for your response, I am trying to achieve the following: see this picture the problem appears when the planner_no

2018-07-18 07:46:27 -0600 asked a question Issue when periodically republishing Joint Trajectory messages

Issue when periodically republishing Joint Trajectory messages Hello ROS community, I am trying the following thing: I

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2018-05-11 11:57:07 -0600 asked a question Odometry estimation ONLY based on IMU sensor

Odometry estimation ONLY based on IMU sensor Hello guys, I'm trying to run some simulations in gazebo where I want to s

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2018-03-18 04:44:36 -0600 answered a question robot_state_publisher posting wrong tf tree (missing connections)

The missing connections were caused by missing transmission elements in the xacro file. I thought only transmission elme

2018-03-17 14:50:31 -0600 commented question ROS says it can't find any executable file

Have you used ┬┤catkin_make┬┤ afterwards?

2018-03-17 14:24:50 -0600 commented question How to refer to propeties using macro prefixes?

I was thinking about the same a few days ago, i tried it as well and hoped it would work out, maybe we get an answer for

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2018-03-17 14:19:45 -0600 asked a question robot_state_publisher posting wrong tf tree (missing connections)

robot_state_publisher posting wrong tf tree (missing connections) Dear ROS community, I have the following problem: I'