Questions tagged [ros-lunar]
The ros-lunar tag has no usage guidance.
104
questions
0
votes
1
answer
23
views
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
0
votes
1
answer
22
views
Robot initial pose accuracy
Hi, I have a robot. I use imu sensor and odometry for localization on map. But the initial pose of robot in real life and simulation are not same. Imagine I put robot at the starting point of the map ...
altpebush
0
votes
1
answer
14
views
[Solved] rtabmap with external odometry (Realsense T265)
OS: Ubuntu 16.04.6 LTS
ROS version: Lunar
RTAB-Map: 0.17.6
Cameras: Realsense D435 and T265
I'm starting both cameras with this launch command: ...
dschnabel
0
votes
1
answer
2
views
Why ROS Lunar reached EOL before Kinetic
Hi,
Just out of curiousity, why did the ros lunar reached EOL before its earlier version ros kinetic. What is the criteria that decides a distributions EOL. ??
Originally posted by Abhishekpg on ROS ...
Abhishekpg
0
votes
1
answer
2
views
ROS audio_common requires gstreamer but apt-get won't install it - CHATBOT
I'm attempting to install the Amazon LEX chatbot node from here: https://github.com/aws-robotics/lex-ros1
That node requires the ROS audio_common node from here: https://github.com/ros-drivers/...
billy
0
votes
1
answer
1
view
When i want to create workspace it give me an error
Hi everyone!
I try to set up my workspace for ROS Lunar, but when i run the comand rosws set ~/fuerte_workspace/sandbox it give me this error: ...
oovidiustr
0
votes
1
answer
2
views
python node bad interpreter
the c++ version is working but python shows the following :
rosrun hello_world talker.py
/opt/ros/lunar/bin/rosrun:
/home/kamal/catkin_ws/src/hello_world/script/talker.py:
usr/bin/env: bad ...
kamal_nathan
0
votes
1
answer
4
views
No module named _multiarray_umath - but I can find it
Having issue with importing a NUMPY module. Have been fighting for hours with it.
I have only minor experience with Python.
Summary eror is this:
...
billy
0
votes
1
answer
8
views
What is the mean of "transform_tolerance" param?
Hello, I'm following the guide from costmap_2d for studying.
On section 5 (TF), there is the sentences.
"In order to insert data from sensor sources into the costmap, the costmap_2d::...
harderthan
0
votes
1
answer
1
view
Fixed multi camera tracking system
Are there any ready made packages for tracking mobile robots in an environment, that utilises fixed position cameras? Something like the VICON system, but native to ros, and using off the shelf ...
Bjb0403
0
votes
1
answer
31
views
Understanding rosbag timestamps
Looking at the ROSbag.v2 specification, every message stored in a bag file is comprised of a:
Message Header
Message Content
The header contains a connection ID and a TimeStamp.
The content is the ...
Vicente Penades
0
votes
1
answer
1
view
Doubt in documentation job
My pull request for indigo,melodic and lunar were merged two days ago for addition in documentation index. Melodic and indigo documentation appears on ROS Wiki but lunar does not appear.
http://wiki....
Yug Ajmera
0
votes
1
answer
1
view
Can TransformListener get the transformation of an indirect child
I am using a tf::TransformListener listener to get the transformation between two frame in my c++ program.
My tf Tree is as follow Parent -> Child1 ->Child2 .
I am using the following line to ...
antoineniotna
0
votes
1
answer
19
views
Why do we use Rviz when we have Gazebo?
Hi, I have this kind of curious question. Because if I google for the difference between RVIZ and Gazebo they give me the result like. Gazebo is a real world simulator(with visualization tools) and, ...
Neko
0
votes
1
answer
5
views
Advantages of Dynamixel X -T / -R TTL vs RS-485
I'm planning to buy servos for a humanoid robot that I control with ROS, is there any disadvantage of the TTL vs RS-485 versions? EMC/Electric disturbance / how many servos on one line/bus are ...
Johannes Jaegers
0
votes
1
answer
2
views
ROS static build
Hi,
I'm looking to install static versions of ROS libraries in a remote system. Is there a tarball that can be downloaded? The apt packages don't seem to contain static versions.
Google brings me to ...
2ROS0
0
votes
1
answer
2
views
Autonomous car simulator with ROS bridge
Hi,
I have been working on Autonomous car project and looking for simulator.
Could you please suggest me simulators which has inbuilt rosbridge configured.
...
kk2105
0
votes
1
answer
4
views
Dynamixel X with OpenCM 9.04C and ROS possible or OpenCR/U2D2 need?
Dear all,
I plan to build a robot arm with Dynamixel X servos. I also want to use ROS tools and drivers for the servos. I found there is a cheap OpenCM 9.04C Controller board (~20USD) available, also ...
Johannes Jaegers
0
votes
1
answer
6
views
How to run a ros publisher without a while loop?
I am writing tkinter python program for turning on and off the publisher. I need to turn on and off the publisher using a button. If am writing using while loop, the entire gui freezes, I am unable to ...
murali1842
0
votes
1
answer
1
view
Unable to locate package ros-lunar-rosbridge-*
Hi Guys,
I am trying to install rosbridge on Ubuntu 16.04 by running sudo apt-get install ros-lunar-rosbridge-*. However I am getting the below errror.
...
kk2105
0
votes
1
answer
2
views
Using ROS to control a DYI robotic arm
I'm newbie in ROS, I've just started to learn it, and I wondering if I can use ROS to control a real robotic arm like this one: DIY Robot Arm Kit Educational Robotic Claw Set (at gearbest), or the ...
Elric
0
votes
1
answer
6
views
0
votes
1
answer
1
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Robot overturn when I controlled with the keyboard
I've just started with ROS and Gazebo and I'm learning how and where to implement my code to control a robot in Gazebo.
I'm trying to control robot Pioneer 2DX robot in Gazebo using ROS.
To do it, I ...
Elric
0
votes
1
answer
2
views
Visualization in RVIZ
Good day, I am new to ROS Answer and beginner of ROS.
Referred to the title above, this Image A below illustrates the desired goal I would like to achieve. It is done in LabVIEW and right now, I ...
KinWah
0
votes
1
answer
6
views
Add elements (obstacles, walls, etc.) in a URDF file
I've just started to learn how to implement an URDF. To do it, I'm following the tutorials about URDF in ROS Wiki.
But, those tutorials only talk about how to define a robot, but If I want to add ...
Elric
0
votes
1
answer
1
view
can't add time and duration
Hi,
I am basing myself on this to do some time manipulation in ros. But when I write :
...
edamondo
0
votes
1
answer
1
view
Make a map of a room using odometry
I have installed the latest version of ROS Lunar on an Ubuntu 16.04.5 LTS.
I need to construct a closed room with an obstacle inside, put a robot and make a map using odometry. How can I do it?
I don'...
Elric
0
votes
1
answer
2
views
How can I know if I have the latest version of ROS packages?
I have installed ROS Lunar on an Ubuntu 16.04.5 LTS.
I have followed the steps in Lunar Installation instructions for Ubuntu.
How can I know if I have the latest ros packages' version?
I did:
...
Elric
0
votes
1
answer
1
view
The robot doesn't move when I use turtle_teleop_key
I want to connect ROS with Gazebo, to do it I'm following this tutorial: Robotic simulation scenarios with Gazebo and ROS.
And running ROS Lunar version 1.13.6 on an Ubuntu Xenial 16.04.4 LTS.
I did ...
Elric
0
votes
1
answer
1
view
Test sensor hardware drivers with Gazebo and ROS
I want to test ros sensor hardware driver but currently I don't have the hardware. Is it possible to test the hardware driver with gazebo.. If yes please share the steps for the same... I want to test ...
niti
0
votes
1
answer
2
views
Dropping connection due to Datatype mismatch
Hi All,
Kindly help me in finding a fix for this.
I am playing a rosbag which has 5 topics. I want to create a new node and subscribe to one of topic from the rosbag.
I am getting the below error when ...
kk2105
0
votes
1
answer
2
views
roscd can't find newly created packages (Win10/WSL)
I've already read half the internet, here's what's wrong:
Packages created with catkin_create_pkg in a catkin workspace can't be found by roscd, therefore roslaunch etc. don't work either.
I already ...
totalnewbie
0
votes
1
answer
3
views
issue with odom and tf with gazebo simulation
I'm creatig a four wheel robot. I can simulate it and pilot it with a joystick and everything woks fine until this point.
However, I'm facing issues with gmapping. When I start it, I got the following ...
Guy Corbaz
0
votes
1
answer
1
view
ssh problems in buildfarm
This is a continuation of this post. This is the error log from running lunar_rosdistro_cache job.
...
venkisagunner
0
votes
1
answer
3
views
Most jobs fail in my buildfarm
I configured a buildfarm and triggered an import upstream job with the build parameters as mentioned in the documentation. But, most of the jobs failed to build. Also, is there any way one can educate ...
venkisagunner
0
votes
3
answers
29
views
(RT_LIBRARY-NOTFOUND) unset. Message: RT Library
Hello,
I am trying to follow the ROS tutorial and create my own package. I see the following error when I try to invoke catkin_make:
...
jitsunen
0
votes
1
answer
54
views
How can I save the RVIZ visualization to an image file
Hello,
I am publishing data trough different publisher, mainly with visualization_msgs::Marker and nav_msgs::GridCells objects.
I get a visualization in my RVIZ window and what I want to do is to ...
antoineniotna
0
votes
1
answer
1
view
roscd finds ros_gazebo_pkgs but rospack find don't
I have installed ROS Lunar in an Ubuntu 16.04.4.
I'm trying to find I package. With roscd I find it, but with rospack find don't.
...
Elric
0
votes
1
answer
1
view
Learn ros doing exercices
I've just started to learn ROS and I think the best way to learn it is doing things with it. I get bored if I read or watch videos without doing anything.
Could you recommend me a book, online course ...
Elric
0
votes
1
answer
6
views
Trying to move husky robot with teleop_twist_keyboard
I've just started to learn ROS, and I'm following the course: Programming for Robotics.
In Lecture 1, they asked to run Husky simulator package. I'm using ROS Lunar version, so I've had to compile it. ...
Elric
0
votes
1
answer
1
view
Husky simulator on Lunar: source code
Where can I find husky simulator package source code to compile it to Lunar distribution?
There are other questions about it, telling that we can compile from source, but they don't tell where the ...
Elric
0
votes
1
answer
6
views
What does intensity mean intensity exactly?
Hello,
I am getting a from a rosbag a point cloud which as been register with a velodyne. I'm visualizing it with a PointCloud2 display type.
I have some artifacts on the result so I'm trying to ...
antoineniotna
0
votes
1
answer
1
view
Communicating with ROS application from Xojo
Hello there,
I'm going to be running ros on a sbc x86 based, with a Ubuntu 16.04 64 bit OS. I will be writing a GUI application in Xojo
and I'm going to need to be able to read information from the ...
Robert_d1968
0
votes
1
answer
4
views
ros control assertion failed
I wrote a custom controller for my robot. I used ros control boilerplate (by dave coleman) for hardware interface. The code compiles but I get the following error.
...
venkisagunner
0
votes
1
answer
2
views
Unable to load a custom controller
I created a custom controller for my omni wheel drive and listed it in my yaml file. But when I tried to launch, Im getting the following error. Tried searching the forum but unable to find an answer ...
venkisagunner
0
votes
1
answer
1
view
FireFLY EGL config Problem
Hello there, I'm running Ros lunar full desktop on this FireFly RK3399. First problem, when i type into the terminal:
rosrun rviz rviz, it kicks up this error:
<...
Robert_d1968
0
votes
2
answers
5
views
Arduino IDE can't find message header
Hey, I'm new to ROS and trying to have a led blink at will with my Arduino from my computer using a message, the future goal being to control several ones from my terminal. I am using ROS lunar and ...
RicHykkie
0
votes
2
answers
2
views
Install ROS Linux Mint 18.3 Sylvia
I am having difficulty following the wiki
http://wiki.ros.org/lunar/Installation/Ubuntu
...
gm9089zo
0
votes
1
answer
4
views
Connect ROS with Gazebo beginner tutorial
I'm new in ROS and Gazebo.
I'm studying robotics at the university and I need to move a robot in Gazebo using ROS. I will control the robot with the keyboard.
My problem is that I have no idea about ...
Elric
0
votes
1
answer
1
view
Gazebo ROS package structure
I've just started to learn ROS using Lunar distribution on an Ubuntu 16.04.
I need to use Gazebo with ROS to do my academic exercises.
Reading the Tutorial: Using roslaunch to start Gazebo, world ...
Elric