Some problems of conversion of xacro to urdf
Hi,everyone. I'm reading the book《mastering ros robotics programming》,and in chapter 2 I'm meeting some problems when I try to convert the xacro file to urdf file in the demo "seven_dof_arm". My system...
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xacro: Traditional processing is deprecated. Switch to --inorder processing! To check for compatibility of your document, use option --check-order. For more infos, see...
View ArticleHow to use .xacro file for spawning model by using spawn_model service in c++
Hi everyone I have a question about spawning model by using spawn_model service. I use .xacro file for descripting the hector_quadrotor model. And I need to dynamically spawning new model by calling...
View ArticleXacro Error: NoneType object has no attribute getitem
I'm trying to convert my `tortoisebot.urdf.xacro` file to a `tortoisebot.urdf` file by running `rosrun xacro xacro tortoisebot.urdf.xacro > tortoisebot.urdf` When I run this command I get this...
View ArticleHector sonar implementation on a Pioneer 3DX
Hello, I'm working on a simulation of two Pioneer-3DX robots on Gazebo. (Debian Stretch / Gazebo 7 / ROS Kinetic) I'm trying to implement sonar readings with Hector_sonar (to make one robot follow the...
View ArticleHow to pass parameters loaded from a yaml file into a xacro?
If I do this: Can I then use values set in the yaml as arguments going into a xacro file? (I haven't experimented much here and I'll update this when I do try it tomorrow, but it seems like the...
View ArticleProblem with xacro:if value="${model_type == A_model_type}"
I'm trying to set up a Xacro where one section is based on a Model type passed as an argument (the first line below would be an external argument). No matter what model_type is set to, model A, B and C...
View ArticleDoes anyone know the focal length of Asus camera? or is there any...
It's so important to me to find the answer before RoboCup 2017 competitions.
View ArticleError reading end tag - Model parsing the xml failed
I am working on a sample exercise of creating an arm robot with 3 links and 2 joints, by defining the urdf file. Am also following the tutorial from **Mastering ROS for Robotics Programmin** by...
View ArticleURDF tutorial Got Error
The screenshot for the problem:  I will try my best to describe it. I just download the tutorial package from the Github:...
View Articlemavros/local_position/pose values are totally different than the position...
I am trying to use mavros with px4 firmware and sitl. I have a launch file that opens a gazebo environment, spawns the drone, runs mavros, and runs px4. The robot model I used is iris. I created the...
View ArticleTurtlebot astra camera does not publish tf
Hello, I have the following urdf file for my astras cameras (sensor_astra1 and sensor_astra2). The problem is that the /robot_state_publisher does not publish the TF of the cameras, so I cannot use...
View ArticleSimulated 3-axis camera gimbal for UAV in gazebo
Hi there, I'm currently trying to simulate a "perfect" (no friction) 3-axis camera gimbal attached on the bottom of a UAV. I'm using the hector quadrotor gazebo/ROS project to try and achieve this....
View Articlerobot slips after upgrade to kinetic
Dear all, After upgrading from Ubuntu 14.04 to 16.04 and from Indigo to Kinetic I'm experiencing a weird behavior from Gazebo and the HyQ robot model. The complete robot model can be found...
View ArticleConvert sdf file to urdf.xacro
Hey there I actually have a sdf file given and would like to convert it to an urdf.xacro file. As I have not found any converter for that I would like to do that by hand. Now what I currently have is...
View ArticleIncluding another robot part via xacro
Hi, I've been trying to attach a gripper to my manipulator and I've decided it would be best for my project if it was in another file. The problem is that I can't seem to do this correctly, when...
View ArticleLoading robot_description dependent on rosparams
There are a few dimensions of my robot model that are subject to change at runtime, and so I would like to use the param server to set and get those values. It was easy enough to set the values, but...
View Articlerviz ignores origin if it has decimal values
Hello, I'm trying to modeling my first robot using URDF. The problem that I have is that when I visualize it with rviz, I can see that the joint's origins are ignored if they contains decimal points...
View Articlegazebo robot model modifying
Dear Alruists, I have to modify some functionality of a relatively complex robot (legged & wheeled), which I did not work before. I can spawn the model(urdf, idont have xacro file) and change joint...
View ArticleNeed help with find error in this urdf
Hi, I am learning the tutorial about urdf. I am at the exercise 8 now. The error I have when run the launch file is: [ERROR] [1478674779.727709696]: length [${bodylen}] is not a valid float [ERROR]...
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