Questions tagged [ros-melodic]
Melodic Morenia is a distribution of Robot Operating System (ROS). Use this tag when your question relates specifically to Melodic Morenia. Always use this tag alongside the [ros] tag.
2,198
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ROS melodic rviz problem
Hi I'm using ROS melodic and I was trying my own global_planner using plugin method.
before changing the base_global_planner to my "own global planner" it was using navfn.
After changing the ...
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43
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Not getting point cloud data from Velodyne VLP-16
I have a raspberry PI 4B running Ubuntu 18.04 with Melodic installed. I tried to follow the official Velodyne tutorial to use VLP-16. I can see the User Interface through the browser. I want to do the ...
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Publishing consecutive Pointcloud2 messages for visualization in RViz
I want to view a PointCloud2 topic in RViz. This topic is essentially a 3D map that is being updated incrementally via new PointCloud2 messages. Suppose I have multiple PointCloud2 messages being sent ...
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Problem communicating with multiple ROS units: rostopic list is visible but not rostopic echo. ($ROS_IP is already set)
I am communicating with my desktop PC as master and my Raspberry pi as slave.
When I start a node on the Raspberry pi and publish a topic (/scan), the desktop PC ...
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13
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807
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Invalid GPG ROS melodic Docker image
for a couple of hours, I am getting the following error when trying to build Docker images based on ROS melodic:
...
- 11
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19
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How to publish images of a file.bag on a topic with python?
I'm a beginner with ROS, so i thank you in advance for your answers.
I have a file.bag (Video) available and I would like to publish the various frames on a specific topic at defined moments of time ...
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34
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How to access the true ROS cost map boundaries instead of defaultones?
I am trying to do a basic RRT global planner implementation in ROS Melodic. I am using a wheeled mobile robot for testing my own global planner plugin for robot navigation through move_base. I am ...
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Can I change the linear velocity limitation in turtlebot3?
I’m using turtlebot3 for my experiment. (also, ros1 and melodic)
For my experiment, the linear velocity limitation of turtlebot3 needs to be changed. As I know, the linear velocity limation is 0.22 m/...
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2
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23
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How to remap tf publication of AMCL
I'm trying to perform Localization in outdoor and indoor situations, and I would like to remap the /tf publisher from AMCL node so I can redirect it to a mux where I could select which algorithm ...
- 40
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67
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Robot getting spawned at the corner of map
using ubuntu 18.04 melodic
i am currently trying to do amcl with my robot with a generated map from gmapping
my map now cannot be spawned normally and the robot is alw at the corner , please help me , ...
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How can I create a path for the robot to go along the wall during autonomous navigation?
I am developing a robot using ROS (Robot Operating System). The goal is to enable the robot to navigate a closed environment, approaching all walls to scan the surroundings. I have a map of the ...
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How to make global costmap larger in slam_karto: goal sent to the navfn planner is off the global costmap
I am trying to send a 2D nav goal to the navigation stack of my turtlebot3, which is running slam_karto. The problem is that the global costmap is taken to be the map topic. The map topic's occupancy ...
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13
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Mapping fields of a message in ros1_bridge
I am trying to bridge ROS1 and ROS2.
I have msgs pkgs in ROS1 and ROS2.
All the workspaces are sourced.
A message definition from my custom defined msgs package has a nested message declaration from ...
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8
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Correct use of /set_pose service
I would like to know more about the service provided by the package robot_localization /set_pose. I'm working in ROS Melodic for this task.
In my case, I'm running a dual ekf filter, so the local one ...
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28
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Gazebo laser sensors not detecting objects with blender world model
I have made a new basement parking world model in blender before exporting it in different formats (dae, stl, obj ) destined for gazebo. The model is correctly imported in gazebo however, the sensors ...
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Transformation Pose
Hi I am doing a transform from the object to the base_link the orientation seems to be right but the positioning is wrong.Here is my code. i had to change the translation values as when i move foward ...
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Camera pose estimation problem
I am creating a Pick and Place program and need help with pose estimation. I am broadcasting on RViz the coordinates based on my YOLO detection and camera. Below is my broadcasting node.
...
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14
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How create new topic in simulink to send image to
I'm trying to create a Simulink model using the ROS network.
My PC is the master of the network, and there is also a remote device: a Raspberry Pi 4. A USB3 camera (Blackfly flir camera) is connected ...
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50
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Octomap messages in rosbridge_1 to 2
I am using Ros 2 but want to map the environment with Octomap. I use the rosbridge between Ros 2 (rolling) and Ros melodic. However, octomap_msgs/Octomap is not a ...
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91
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Is it possible to get x and y coordinates in gazebo world with mouse click?
I want to get the coordinates of a point (x and y coordinates) using the mouse on the gazebo client to navigate my robot to this clicked point. Please help me, I'm newbie!
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32
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error installing ros noetic in step 1.5
I installed ros noetic according to the instructions but when i get to source ~/.bashrc I get a message saying ...
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30
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Does ROS 1 have compatibility with any Renesas Hardware? Or is it just available for ROS-micro (ROS 2)?
I'm doing research about ROS compatibility with different microcontroller hardware. From what I've searched, I have only found compatibility with microcontrollers using micro-ROS, which is built with ...
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51
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"keyserver receive failed" with ROS Melodic Raspberry Pi
I am working on Unitree A1 Quadruped Robot. The bot has two boards, with Raspberry Pi on the front board. I am trying to install the ROS Melodic Raspberry Pi version using this link:
When I run the <...
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26
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does rospy support rosparam update callbacks?
Using rospy/ROS1, I would like a callback when a certain parameter on the ROS1 parameter ...
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138
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Error: Packages could not have their rosdep keys resolved
I am getting an error when I give this command rosdep install --from-paths ./ -i -y --rosdistro melodic
...
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2
answers
99
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JointState message publishes different angle and velocity
I am running gazebo simulations with Robotis' OpenMANIPULATOR-P. (https://emanual.robotis.com/docs/en/platform/openmanipulator_p/overview/)
I am using ros melodic with UBUNTU 18.04, but using kinetic-...
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32
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Unable to publish odometry for Unitree A1 Quadruped Robot
I am working on Unitree A1 Quadruped Robot on ROS Melodic (Ubuntu 18.04). I have cloned the unitree_guide repository.
When i run ...
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1
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39
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Formatting rosservice response
I'm working on ROS MELODIC.
I would like to return as a service response a string containing a list of areas with some data.
The problem here is that I wanted to format the output so on the client ...
- 40
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1
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51
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Turn on a point using the DWA local planner with a differentially-driven car
How can DWA be used to let a diff-car turn around at specific point?
For example,
If the goal is at point (1), I want the car to turn first, then follow the line, like the green line in the pic.
The ...
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20
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Quadruped is moving very slow when i try to publish odom topic
Hi i am currently working on unitree A1 in ubuntu 18.04 ROS Melodic. I have installed all the unitree_ros and unitree_guide packages in my catkin_ws workspace. i am able to control the quadruped in ...
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Regarding rotation of the box when affected by two non equal side forces
We have created a workspace, where we have a box ‘B’ (massive) with two side boxes(left and right) of negligible size and mass attached to the line connecting the centre of Mass of the main box B. The ...
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2
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52
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IMU sensor Vectornav VN100 driver doesn't post any INS messages
I've already posted the same question on the GitHub page of the VectorNAV driver: github.com/dawonn/vectornav/issues/128 But no luck, noone gets back to me, looks like the branch isn't in much support ...
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267
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Float32MultiArray in pub/sub example
Hello ROS people,
so basically, I am simply trying to reproduce a simple C++ pub/sub example using the Float32MultiArray type. Here are the codes :
SUBSCRIBER
...
Lilipop
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1
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apriltag_ros, process died when detected required tag
Hey everyone, why does apriltag_ros continuous_detection.launch process died when it detects a required tag? I am using a intel realsense d435 camera trying to setup apriltag detection. Running on ...
RowBot
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1
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13
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Add files to be loaded when ROS node is launched
Hello ROS community,
I have a python code for a hardware device (radar) that uses a parameters.cfg file for hardware settings (independantly of ROS).
In the same code, I am creating a ROS node so that ...
Lilipop
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1
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6
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Save all recorded bag files with `rosbag record`
I am recording data from a range scanner with ROS Melodic using the following command:
rosbag record -o nav310_ws/bagFiles/session --split --duration=1 --max-splits 1 /cloud
In the ...
Ben Brian
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1
answer
4
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robotic arm safety with proximity sensor
Hello
I am working on a robotic arm.
The issue I'm working on right now is security.
My aim is to slow down the speed of the robotic arm if a human enters the environment while the robotic arm is ...
omeranar1
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1
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22
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Build ROS code cpp without Catkin Package
Hello Community,
So I have been working with ROS lately, it was really easy testing code in python where I just had to import rospy to work with ROS as I wished. I would then execute my programs with $...
Lilipop
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1
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5
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ROS Subscriber and Publisher node
Hello ROS community,
I want to implement a ROS node that is both subscriber and publisher. The idea is that each time the subscribed topic changes, the node will publish to another topic. The node ...
Lilipop
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1
answer
135
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"ERROR: Unable to communicate with master!" and "Unable to Register with master node"
Hello,
I have two computers on a local network. First of them has Ubuntu 18.04 as OS, ROS Melodic installed and connected to the network with an Ethernet cable. The other one has Windows 10 as OS, ...
mericgeren
3
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2
answers
88
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The 'stomp' configuration parameter was not found
I am trying to use STOMP Planner by following the documentation. As per the documentation, I installed the STOMP from the source in ROS Melodic (Ubuntu 18.04.6 LTS). Unfortunately, the command ...
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Missing Fixed Frame in My Model
Why isn't Gazebo 9 displaying the tip's frame? Using RViz, you can view the frame as shown in the below image. In addition, I can't see the link listed under the model in Gazebo. There seems to be no ...
- 2,453
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85
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Extract timestamp from bag for some topics without the time
Hi to all,
unfortunately, I recorded a very long bag file containing some topics that have a timestamp and two topics that do not include it since I forgot to add it before to launch the ROS node.
...
Marcus Barnet
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1
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45
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Why does joint links pile up to origin after running the control launch file?
This is the spherical bot which I am working on from the last question. everything seems to run properly while launching the gazebo and rviz launch files. but the moment I launch the control launch ...
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2
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pick and place prevent box flip
Hello
I am trying to make a pick and place application.
My goal is to move 4 boxes from one point to another.
while doing this I saw the boxes turn upside down and the arm carries the boxes with ...
omeranar1
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1
answer
24
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How do I convert camera coordinates to world coordinates in Moveit using tf2?
Hey everyone, I would like to convert my object detection pose estimation coordinates to world coordinates so that I can send a pose_target msg to my robotic arm in Moveit. But I do not know what is ...
RowBot
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1
answer
34
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How can I use object pose estimation to pick up an object in Moveit?
I am working on a robotics project using Ubuntu 18.04 and ROS Melodic, and I am using an Intel RealSense D435 camera to detect objects. I have been trying to use object pose estimation to pick up an ...
RowBot
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67
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RVIZ Transform error
I am working on a custom spherical robot with two motors which controls the two pendulum and one motor which drives the robot.
When RViz is launched: The Global option > Fixed frame is set to ...
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23
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Odd Docker roscore/roslaunch delays with Linux kernel 6.1
Hello,
I have an odd one here and am trying to figure out a possible root cause!
The Situation
I am running a custom Linux version made using Buildroot, with application ROS code containerized. I have ...
danambrosio