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2019-03-01 12:36:43 -0500 | marked best answer | Help with xacro default values Hello everybody, I have seen an interesting tool that I wanted to use : default values for parameters in xacro http://wiki.ros.org/xacro#Default_par... But when I am trying to use it, the model can't be loaded. There is some test that I made :
invalid parameter min_angle
invalid parameter min_angle
Invalid parameter "roll" This model works perfectly when I don't try to use default values. I am using ROS indigo 1.11.20. There is my questions : Do i need to set a default value for each parameter ? Is there an obvious mistake that I am missing in the declaration of my macro ? Am I running a ROS version that supports this xacro default values ? Thanks in advance |
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2018-02-15 02:07:08 -0500 | answered a question | Why does my robot model fall in Gazebo? You can try to add some friction on your joint to make them resist the gravity force. You may need to control your join |
2018-02-08 10:43:35 -0500 | commented question | Map is shaking while implementing the gmapping ? check that you have only one source for your tf You can use rosrun tf view_frame to see the tf tree |
2018-02-08 03:55:41 -0500 | asked a question | Help with xacro default values Help with xacro default values Hello everybody, I have seen an interesting tool that I wanted to use : default values f |
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2016-08-08 04:31:36 -0500 | commented question | How to use sensor_msgs/LaserScan's message about rangers[] Maybe nan value is due to a value outside the min-max distance range. To have a better understanding of laserscan message, there is the following topic with a very good answer |
2016-08-05 03:14:10 -0500 | answered a question | add metadata to rosbag I will answer my own question : I use psutil instead of subprocess. There is the part of the code doing the job : |
2016-08-04 03:17:35 -0500 | answered a question | Gazebo topic publication issue within namespaced group tag If you are using plugins in your robot's description file, you should add a parameter to your robot_description : And in your xacro files inside the plugins tags you will add : |
2016-08-03 04:15:08 -0500 | asked a question | add metadata to rosbag Hello everybody, I am trying to add ros parameters to a bag file just after the record is done. I am writing a python script to do that and I have followed this link : http://wiki.ros.org/rosbag/Cookbook. But I didn't manage to make it work. Nothing is added to the bag file and I have no error message ..... There is my code : Thanks in advance. |
2016-07-28 09:40:55 -0500 | commented question | Problem using a lidar sensor in gazebo The gpu_ray will use your graphic card but the other will not (I don't know about the details, maybe you will have more answer about that on the gazebo version of this site). |
2016-07-28 01:39:18 -0500 | commented question | Problem using a lidar sensor in gazebo You can set the visualize tag to true in order to see your laserscan in Gazebo's GUI. If laser impacts don't stop on obstacle maybe you could try the laser plugin which is not using gpu -> libgazebo_ros_laser.so. |
2016-07-27 03:00:10 -0500 | commented answer | how to turn my robot with different controllers? For 1 : there is a tutorial here Then you can take the diff drive plugin code and change the msg type expected : gazebo_git |
2016-07-26 06:29:11 -0500 | answered a question | how to turn my robot with different controllers? If you want to separate your motor's commands, you can :
With the code that you have posted :
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2016-07-11 03:07:12 -0500 | asked a question | yaml substitution Hello everyone, I would like to set a list of map for a node using a yaml file. I see that there is a subst_value in the rosparam tag but I don't know how to use it and how it's working. What I have at the moment : In a launch file : In a yaml file : The result I have : What I want : Is it possible to do that ? |
2016-06-21 07:49:04 -0500 | commented question | How do I write a C++ code to record variable location of robot in rosbag file? Yes it's another way to communicate with ROS nodes. Services allow you to communicate with nodes at a given time. You can look to the ros wiki for more information : http://wiki.ros.org/ROS/Tutorials/WritingServiceClient(c%2B%2B)) |
2016-06-21 04:05:35 -0500 | commented question | How do I write a C++ code to record variable location of robot in rosbag file? You can use a service to close the file when you want. |
2016-06-17 01:54:21 -0500 | commented answer | Using ROS with Docker - Unable to set ROS_PACKAGE_PATH After running the container. We use a script to set all environment variables. |
2016-06-16 02:09:58 -0500 | answered a question | Using ROS with Docker - Unable to set ROS_PACKAGE_PATH I don't use ENV to set ROS_PACKAGE_PATH but export : |
2016-06-14 02:35:39 -0500 | answered a question | How to move any 2 robots simultaneously in gazebo? If they have to move the same way, you can make them subscribe to the same command topic. You can also take a look at this : http://wiki.ros.org/turtlesim#mimic. In the tutorial, it allows a robot to reproduce the movement of another one. |
2016-06-14 02:30:25 -0500 | answered a question | Bad Python code for custom message node - eating up cpu? Why the rospy.Rate is inside the loop ? Is the 15 Hz rate working ? According to this link http://wiki.ros.org/rospy/Overview/Time, this line should be before the while. |
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2016-06-09 03:38:35 -0500 | answered a question | Unable to publish two topics from same node kin and msg are messages that you will send on a topic. Can you post more sample of your code ? |
2016-06-09 02:00:27 -0500 | answered a question | Ros stereo image proc with two USB Webcams Maybe you should look at this package : http://wiki.ros.org/usb_cam It will allow you to have a camera topic in output. |
2016-06-08 02:01:44 -0500 | commented question | DiffDrive odometry source is missing These warnings are not a problem. Sorry my bad, I made a mistake. It's odometrySource. You can check what are the parameters of the plugins by checking the source code : git_gazebo |