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2019-01-09 20:22:38 -0500 marked best answer Reference paper for gazebo

Is Design and use paradigms for gazebo, an open-source multi-robot simulator (N Koenig, A Howard - Intelligent Robots and Systems, 2004) still the canonical reference for Gazebo?

2016-09-09 06:50:13 -0500 commented answer Measure distance between 2 points in GUI?

That is a really cool concept... I don't know how easy it would be to implement, but I can also see linking a plugin an instance of the tool, and then have the measurements also being broadcast.. this may be me running away with an idea though :) Is it possible to add the link to the branch in the youtube description (assuming it's a public repo)?

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2016-03-03 08:07:54 -0500 answered a question Hi, is there any existing plug in which allows a model to follow a particular path? Or anything close to constraining or planning path of a model (Example: quad-rotor or cart)

You might want to take a look at motion planning in ROS (http://moveit.ros.org)

You can also look to the move_base package : http://wiki.ros.org/move_base Then you add a gazebo_ros plugin like the diff_drive plugin to your model.

2016-03-03 08:05:54 -0500 answered a question Headless Gazebo through firewall

I know that it's not using GZclient.. but you should be able to write a plugin that communicates on a particular port, and shares the data that is of interest to you.

2016-02-23 12:41:44 -0500 commented question Hi, is there any existing plug in which allows a model to follow a particular path? Or anything close to constraining or planning path of a model (Example: quad-rotor or cart)

You might want to take a look at motion planning in ROS (http://moveit.ros.org)

2016-02-22 11:24:38 -0500 commented answer Two robots in Gazebo, each with separate ROS

I think that his question relates to the configuration of the gazebo_ros plugins... I'm guessing the question being asked is how to set the ROS_MASTER_URI parameter (or other command line args) for a running gazebo plugin. It might be an easier strategy for the two robots connect to the roscore instance that gazebo_ros is running on.

2016-02-16 09:46:49 -0500 commented question Simulated audio sources, microphone sensors and actor behaviour

Not sure if you have to use Gazebo, but take a look at Stage (It also has ROS integration).. There may be an audio sensor in there... http://pooyak.com/work/pubs/pooya-karimian-msc-thesis.pdf (With a quick scan I can't find it in the source though...)

2016-02-16 09:39:59 -0500 commented question Connecting gazebo and ros_control while using SDF files

If a plugin is listed in the sdf, but the file isn't found, it appears to not throw an error or a warning.

2016-02-16 09:35:40 -0500 commented question Connecting gazebo and ros_control while using SDF files

I don't think there's a publicly visible tutorial as yet, but it seems that the tutorials page is changing as we speak. The team at osrf is probably super swamped. It seems that much (but not all!) of the URDF history is relevant for "sdformat.org"... and if you/we had experience with URDF then digging into the API, things would make sense. The catch is that much of the URDF tutorial content is no longer accessible (even via archive.org), so there's not much we can do but ask questions and try.

2016-02-15 17:57:37 -0500 commented answer SDF files with Gazebo plugin for ROS?

Unfortunately the links in this answer have gone stale.

2016-02-15 10:22:28 -0500 edited question Move a part of a model based on sensor measurments

I have added a laser sensor on a model (Gazebo 6.5.1). How can I steer a wheel according to the results of the sensor ?). I have in my mind to do it with the publisher - subscriber way , but i don't know how.

Also if anyone could give me an example of two plugins sending messages.

2016-02-15 10:09:52 -0500 commented answer Change color of a link runtime
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2016-02-11 19:11:59 -0500 commented question libgazebo)ros_laser.so does not generate topic to publish my laser scan data

Can you create an answer so that others can benefit from the solution to this question?

2016-02-11 10:50:44 -0500 commented question Cannot start Gazebo_ros

Is this still an open issue?

2016-02-11 10:22:56 -0500 asked a question Gazebo focussed questions on answers.ros

What can be done to address the following issue?

I know that there are also a ton of unanswered questions already here (I wish knew enough to answer them!).. but there are also a large number of Gazebo related questions on answers.ros that need the attention of this community. It almost makes it seem that there's a gap/need in the tutorials since there are reoccurring themes that appear to be still unaddressed.

http://answers.gazebosim.org/question...

http://answers.ros.org/question/22282...

http://answers.ros.org/question/20914...

http://answers.ros.org/question/22319... (not really a solution/answer!)

http://answers.ros.org/question/22170...

http://answers.ros.org/question/22542...

http://answers.ros.org/question/45465...

http://answers.ros.org/question/22316...

http://robotics.stackexchange.com/que...

https://groups.google.com/forum/#!sea...


A tutorial! http://www.theconstructsim.com/create...

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2016-02-06 23:11:05 -0500 commented question Headless Gazebo through firewall

Are VPNs an option in your use case?

2016-02-06 13:48:16 -0500 asked a question Help troubleshooting this SDF model

Hello, it has taken me a while to sift through the API docs and the other SDF samples, but I'm still not able to quite get this ball-on-beam sdf functioning as expected. The previous version was highly unstable prev version.

The current version doesn't isn't controllable. Maybe a gearbox is needed? Maybe I shouldn't actually try to use a real object that can leave the surface of the beam?

https://github.com/slremy/ballonbeam

Any suggestions?

For reference, here's one clip of the model in the wild.. https://www.youtube.com/watch?v=y5Hmr...

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2015-12-16 14:00:56 -0500 commented answer Trouble setting up GZWeb

Not sure how I missed the trouble shooting section... thank you

2015-12-16 12:57:50 -0500 asked a question Trouble setting up GZWeb

Hello all: Installed gazebo2 (limited by ROS deployment), and was attempting to get gzweb up and running. Running into the following when running ./deploy.sh -m

-- Generating done
-- Build files have been written to: /home/specter7/gzweb/build
Scanning dependencies of target gzcoarse
[100%] Building CXX object tools/CMakeFiles/gzcoarse.dir/gzcoarse.cc.o
Linking CXX executable gzcoarse
[100%] Built target gzcoarse
/usr/bin/env: node: No such file or directory
/usr/bin/env: node: No such file or directory
There are node-gyp build errors, exiting.

This binary file exists and has the permissions which permit it to be read.

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2015-12-14 11:25:36 -0500 commented question Getting different behaviours of the same robot that I launch in two different configurations

Can you give a brief description of your controller? Can you also say more about how you evaluate fitness?

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2015-12-08 07:05:24 -0500 marked best answer Any attempts to install Gazebo in Cygwin lately?

I know this may be crazy talk, but has anyone tried to install Gazebo in Cygwin lately? Although I see stale references to installing ROS on Cygwin, I think a couple of people have had some recent success with Groovy.. I also see that people have installed OGRE. This makes be curious about Gazebo..

What would be the suspected/expected sticking points aka "opportunities for failure"?

2015-12-08 07:02:37 -0500 asked a question Is there an existing model for a ball on beam system?

Hello everyone, I have a couple of hours next week that I was planning to spend with our favorite simulation framework. Before I started though, I wanted to check if there already was an existing model of a ball on beam, or a ball on plate system.

If not, I was going to follow Building a Visual Robot Model with URDF from Scratch assuming that still is how things are built in Gazebo these days.

2015-11-30 03:01:37 -0500 edited question Why are contacts so unstable?

I use this gz topic to get contact data /gazebo/default/physics/contacts and I'm try to get a center of pressure, but it turns out like something in this pic sss.jpg

I also uploaded a vid for showing how contacts are shaky. https://drive.google.com/file/d/0B4bN...

2015-10-31 12:30:51 -0500 marked best answer Is there a published feature matrix for Gazebo?

While looking at "the competition", I noticed useful Feature_Matrix, and thought it might also be a good basis for metaphor to provide links to the functionality (and tutorials) for key Gazebo components.