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Getting ROS melodic from docker to communicate with ROS noetic on host PC

I'm working with ros noetic in ubuntu 20.04 with docker desktop. I'm specifically running this package, which runs a back-end for a multi-robot SLAM system. According to the authors, they have to run ...
GShim23's user avatar
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1 answer
123 views

How to get ROS_MASTER_URI so that other devices can also connect to it?

Currently, when I run roscore, I can ROS_MASTER_URI in terms of localhost. I want to get ...
Saksham Gupta's user avatar
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2 answers
534 views

How to configure ROS_MASTER_URI & ROS_HOSTNAME

Hi, I am not able to clearly understand the concept of ROS_MASTER_URI. Can someone kindly help me with the below? I have two systems. One robot which runs on ESP32 and connects via WiFi. I want this ...
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1 answer
283 views

ROS2: communication over two machines on the same network

Hi everybody, I am experiencing a weird problem with ROS2 foxy. Basically I have one machine that is not able to commuinate over ROS2 with others on the same network. Let me give you some details: ...
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1 answer
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Unable to comunicate ROS - Matlab

Dear ROS community! I have a problem...I configured my matlab environment as ROS master and i want to connect external Linux machine. I adjusted ROS_MASTER_URI inside the linux machine, after that i ...
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1 answer
299 views

ROS remote master: can see topics but no data

Hello guys I have already read through several threads like this but couldn't figure out what my issue is.. I have a robot and a remote PC. I want to visualize the lidar data of the robot in rviz on ...
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1 answer
60 views

unable to contact ROS master at

Hi, This is a simple question but troubled me hours. I am following the turtlebot3 tutorial. Setting up the bashrc of host-pc with PC IP address 192.168.48.132 : ...
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1 answer
5 views

Where can I find Ubuntu Mate 16.04 ISO to install ROS Kinetic on Raspberry Pi

I want to use ROS Kinetic on a network with my PC and Raspberry PI. And to do so, I want to isntall ubuntu mate on my pi. But on the official website, they have removed the link to download ubuntu ...
jash's user avatar
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1 answer
491 views

WARNING: ROS_MASTER_URI [http://localhost:11311] host is not set to this machine' and nodes 'Couldn’t find an AF_INET address for [localhost]'

Hi, I have been running ros nodes in my machine but suddenly I got these erros every time when I'm running nodes: Master: ...
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1 answer
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snapcraft with different ROS_MASTER_URI

Hello, I am trying to set a different ROS_MASTER_URI for my snap. My package is very simple. Only have one launch file to lauch usb-cam package. My problem is that, I can not change the MASTER_URI ...
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1 answer
68 views

Specification of ROS_MASTER_URI and ROS_HOSTNAME

Hello everyone, I would like to us ros for multiple robot instances, but have some doubts about the network setup. The idea is to have two robots that are communicating in a network. Each of them have ...
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1 answer
43 views

invalid master URI

Hi, I am using the intel euclid vision system for my research, which has ros running on it by default on booting and it has a web interface. By mistake, i changed the ROS_MASTER_URI on the web ...
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1 answer
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Is it possible to run different ros distributions and still communicate with each other in a distributed computing setup?

If I have two computers connected to the same network and if computer A has ROS Indigo installed and if computer B has ROS Kinetic installed, can I run the master in computer A and export the ...
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1 answer
20 views

Mavros and Unsupported FCU on Intel AERO RTF

Hello everybody! I am trying to command my drone, an intel aero RTF, via mavros. So I have the drone running roscore, and my companion computer running mavros. So to resume: I sourced the ...
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1 answer
23 views

ROS_MASTER_URI for amazon EC2 server

I have ROS Indigo working well on an Amazon EC2 server. I can ping the server OK, although I had to setup the amazon security group to allow that. However, I am unable to get a response to rostopic ...
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1 answer
4 views

rviz over remote dns

I'm remote to my master_uri; ie http://somedns:11311 I can listen and publish to topics from the master, but I'm unable to list topics in Rviz or Gazebo. I can get ...
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1 answer
6 views

Export ROS_MASTER_URI error in win_ros

Hi all, I am getting a little bit crazy with his problem. I installed win_ros hydro in windows 7, and I am trying to run a simple talker from a Visual studio 2012 professional project. I followed the ...
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2 answers
103 views

How to connect nodes in docker to remote master?

I have two machines A and B in the same network. A is running roscore on address http://192.168.1.101:11311, and running a node, say ...
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1 answer
3 views

Possibility of flipping the role of Master & Slave for a group

Scenario I have multiple bots running rtabmap. They are their own ROS master and their is no slave (party of 1). Each bot is ...
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1 answer
20 views

ROS Multiple Computers - adding a 2nd master

Current Scenario Robot + Camera Laptop The robot runs roscore and the laptop runs rosrun rviz rviz. On the laptop I'm able to ...
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1 answer
3 views

Kinect + Openni/Freenect + Multiple machines

I've learned that ROS allows for talking/subscribing of topics over the network by utilizing ROS_MASTER_URI. I'm trying to get my Kinect data to work in a similar fashion. Senario: Computer (10.0.0....
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1 answer
53 views

Using ROS commands over ssh?

I am trying to launch a node using a launch file on a remote computer from a local machine but I am getting the error: "error launching on [192.168.1.7-0, uri http://ai2:37824/]: Name or service ...
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1 answer
9 views

Set ROS_MASTER_URI on remote robots

Hi everyone, I tried searching on the internet, but I didn't find exactly what I wanted. I have the following infrastructure: PC : 192.168.0.100 Robot1 : 192.168.10.101 Robot2 : 192.168.10.102 ...
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1 answer
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Does RGBDSLAM support ROS_MASTER_URI

If I enable roscore on a remote machine and suppose ROS_MASTER_URI will it do all the processing remotely? My goal is to offload the loop closures onto a faster machine. The longterm goal is to pick ...
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0 votes
1 answer
9 views

ROS Master Communciation Error - BeagleboneBlack

Our setup: Laptop running Ubuntu, serially connected to a BeagleboneBlack running Debian Wheezy. From the laptop, SSH-ing serially into the BBB is successful. Roscore is running on latop. However, ...
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2 answers
6 views

Port to connect to rostest rosmaster after Indigo

Connecting to rosmater with specific port number used to be possible. I see this pull request against Indigo that randomizes the ...
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1 answer
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Couldn't find an AF_INET address for [] with Virtual Machine

So i tried a few different things already, primarily this answers: http://answers.ros.org/question/163556/how-to-solve-couldnt-find-an-af_inet-address-for-problem/ but for some reason im still getting ...
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1 answer
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Node on RosAndroid is not receiving images from PC

Hey guys, I have created a node on android to subscribe to a topic for images from PC. PC publishes images continuously & node on android phone subscribes for images. I have set the right IP to ...
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1 answer
5 views

setup problem for a publisher/subscriber running on different PCs

Hi, I am really a ROS and Baxter beginner, and I am experiencing strange behaviour of the ROS communication layer that I do not understand. Consider two trivial scripts, a publisher and a subscriber: ...
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1 answer
13 views

View rqt console in other machine

Hi, I run a example topic in machine and I would like see debug messages (ROS_INFO, ROS_ERROR...) in another machine. I used export ROS_MASTER_URI and ROS_IP in first machine and export ...
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1 answer
7 views

Zeromq in ROS as external library

Hi all, I am trying to use zeromq in ros as external library to communicate with other device(no ros on this device). For testing i wrote ...
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1 answer
6 views

pioneer3-at I dont wnt to use ssh to remotely control robot

"pioneer3-at I dont wnt to use ssh to remotely control robot" Hi everyone, I have a problem like this: Every time I want to operate my Pioneer 3at robot, I need to use "ssh" ...
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1 answer
20 views

set ROS_MASTER_URI directly in code

is it Possible to set ROS_MASTER_URI directly in c++ code without use of environment variables???? I use a big program with needs a lot time of initialisation, and I builded roslibs wichthe program ...
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0 votes
5 answers
202 views

ROS remote master: can see topics but no data

Hi there, I have got a question about running ROS on several machines. I currently have 4 systems: Robot: 192.168.1.1 PC1: 192.168.1.2 PC2: 192.168.1.3 PC3: 192.168.1.4 Roscore/Rosmaster is running on ...
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0 votes
1 answer
1 view

RQT_RVIZ RVIZ Remote ROS_IP

Hi community, Hydro-RQT/RViz did not use ROS_IP, ROS_MASTER_URI or ROS_HOSTNAME... "rostopic list" works fine. Bug or feature ? Thanks in advance for any suggestion Cheers Christian ...
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0 votes
1 answer
9 views

Why does ROS_HOSTNAME overwrite (parts of) ROS_MASTER_URI?

See this example: ...
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0 votes
1 answer
29 views

Cannot get listener and talker working on two machines

So I have two machines #1 and #2. I selected #1 as the master by $ ssh #1 $ roscore Now I opened a new terminal on #1 and then ...
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0 votes
1 answer
13 views

help!-WARNING: ROS_MASTER_URI port [80] does not match this roscore [11311]

Hi, I was trying to connect to the turtlebot and I think I accidentally changed the ROS_MASTER_URI and ROS_HOSTNAME. Now, whenever I run roscore I get this: WARNING: ROS_MASTER_URI port [80] does not ...
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0 votes
1 answer
4 views

multirobot interaction using turtlebot

Hello everybody, I have a very basic question regarding multi-robot interaction. How can I make two robots share the same roscore? My basic job is to interact between two robots via some topic. The ...
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1 answer
1 view

android_core tutorials: no communication to roscore

I successfully installed and builder android_core. I encountered some problems but could fix them. I installed the android_tutorial_camera and android_tutorial_pubsub on the android device. Allthough ...
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1 answer
7 views

Roslaunch fails to set MASTER_URI over ssh

I've read this question and set my MASTER_URI accordingly (own machine name) yet the remote node gets launched with another roscore. Here is my launch file ...
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0 votes
1 answer
5 views

Why does ROS need a Hostname?

Currently I have two computers, one running a service 'TIME_SPAM' which endlessly sends UNIX timestamps to any subscribers. On a client PC, using the command 'ROS_MASTER_URI="hxxp://10.230.82.244:...
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3 answers
119 views

Failed to contact master at [localhost:11311]

Hi everybody, This is the first time i'm here, so if my question is too dumb to you, please forgive me. I'm on track "Understanding Nodes" in the beginner tutorials. After changing the name ...
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0 votes
1 answer
57 views

rosparam: Can't set parameters on Master, via launch file

(ROS Fuerte) I've setup and tested 2 PCs to talk across a network. There's a client node and a master node. Both can ping each other via hostname. I'm starting the client using a launch file that ...
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0 votes
1 answer
2 views

how to set ROS_MASTER_URI to the wireless address instead of IP

I am trying to stablish bi-directional connection between workstation and a netbook of a Turtlebot robot. The netbook uses the school wireless network and I can not get an static IP for it however it ...
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0 votes
1 answer
39 views

Ros node not subscribing to other computer

I'm running an application on two computers. The ROS_MASTER_URI on both is set to the master, and each ROS_HOSTNAME is set to itself. A node on the master computer subscribes to a topic /...
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1 answer
1 view

rviz over Wifi "brw_upload_constant_buffer: Assertion" failed

I have ros setup on two machines connected by wifi, one on my robot, the other on a laptop, using the ROS_MASTER_URI approach. I've confirmed proper operation using the tutorials. When I start rviz, ...
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2 answers
9 views

How to tell remote machines not to start separate roscores when using roslaunch? (Fuerte regression?)

Hi My goal is to start nodes on different machines using roslaunch while all the nodes should communicate to one master. This worked in electric. In fuerte the same process starts now a master for ...
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0 votes
1 answer
8 views

ros_master_uri - change it and save it

Hi, Is there a simple way to store change of ROS_MASTER_URI? So when ever I boot up my machine (or start node) this would always be changed to for example: ...
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0 votes
1 answer
2 views

modifying android_tutorial_pubsub. able to connect master on pc but roswtf and rxgraph suggests error

Hi ROS community, I'm trying to modify the android_tutorial_pubsub in hope that the roscore is started on my PC instead of on Android. I started roscore and set ROS_IP as well as ROS_MASTER_URI. All I ...
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