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2021-04-07 09:26:13 -0500 | marked best answer | Does ROS source installation variant "mobile" work? Raspberry Pi 3, ROS Kinetic, Ubuntu 16.04 (32-bit) The "robot" variant works fine. But it does not include navigation stack and what I would consider other mandatory packages. So I tried "mobile", like this:
Result: Which seems to suggest that variant is not working. Is there a way to add the navigation stack (and other packages) after the fact, into the "robot" variant? |
2020-07-14 08:54:06 -0500 | commented question | what depends on control frequency and planner_frequency in move_base? How's the CPU loading?... Run "top -d 1" in a terminal while the problem is occurring. |
2020-07-10 09:18:57 -0500 | commented question | what depends on control frequency and planner_frequency in move_base? You should mention aspects of the robot spec; What platform, computer, LiDAR, etc. Also, do you see warning/error messag |
2020-07-08 09:03:18 -0500 | answered a question | How to implement bumper pointcloud on a custom robot? Take a look at this implementation of a "virtual bumper" that does essentially what you want, but by using comparison of |
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2020-07-05 11:26:46 -0500 | answered a question | Autonomous Exploration Hector SLAM The explore_lite (http://wiki.ros.org/explore_lite) package works well with Hector mapping. You could see a video of thi |
2020-07-04 10:19:35 -0500 | commented question | Hector Slam generates Blank Map even Without Error Show us your complete hector launch file. |
2020-07-04 10:04:08 -0500 | answered a question | Raspberry Pi Installation Fatal Error Installing ROS on Pi 3 is straightforward. Your best bet is to keep things as plain vanilla as possible, meaning use the |
2020-07-04 08:04:52 -0500 | commented answer | Can ros run smoothly on VM? Ethernet is tested and works fine. I'm not completely clear what you mean regarding the HDMI... What do you want to do w |
2020-07-03 11:47:46 -0500 | commented answer | hardware accelerators As a point of reference: pi4 with mapping, navigation, and frontier exploration all running concurrently went from occas |
2020-07-03 11:26:46 -0500 | edited answer | Can ros run smoothly on VM? Can ROS run smoothly on VM? It can run very smoothly. However, if you know you are going to be doing a lot o |
2020-07-03 11:24:06 -0500 | answered a question | Can ros run smoothly on VM? Can ROS run smoothly on VM? It can run very smoothly. However, if you know you are going to be doing a lot o |
2020-07-03 11:05:55 -0500 | commented answer | Robot Jerky Movement with Navigation Stack Navigation stack works fine on Pi3. Just need to make sure to avoid cpu hog issues. 'top -d 1' is your friend. |
2020-07-03 10:52:47 -0500 | commented question | Node on Raspberri Pi cannot talk to Master running in VM on Mac Prefer Ubuntu over Raspbian. |
2020-07-03 09:27:06 -0500 | commented question | Multiple mobile robot navigation technology Hi hojeong, I have expertise in ROS, networking and multiple robots control and navigation. Perhaps I can help you. Plea |
2020-07-03 08:11:41 -0500 | commented answer | raspberry pi cam node for melodic ubuntu 18.04 server You might need to start with a fresh install of Ubuntu/ROS, as per: https://rhoeby.com/blog/install-ros-on-raspberry-p |
2020-07-02 16:42:21 -0500 | commented question | Could not contact master on turtlebot3_bringup Can you ssh from one to the other? See: http://wiki.ros.org/ROS/Tutorials/MultipleMachines |
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2020-07-02 14:30:09 -0500 | answered a question | raspberry pi cam node for melodic ubuntu 18.04 server I too had problems with raspicam_node on Pi4. So I fall back to trying to install similar to: ‘https://github.com/fpast |
2020-07-02 08:58:18 -0500 | commented question | raspberry pi cam node for melodic ubuntu 18.04 server Might help if you post the text of the error. |
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2019-12-10 20:14:34 -0500 | commented question | Node seems to unwantedly automatically unsubcribe from topic That appears to be quite a busy loop you have there. What stops it from pegging the cpu? You probably should have some s |
2019-12-10 15:50:51 -0500 | commented answer | Checking Workspace while installing in what directory? |
2019-12-10 12:58:55 -0500 | commented question | Node seems to unwantedly automatically unsubcribe from topic You probably should put those rate/sleep calls back in. |
2019-12-10 12:53:56 -0500 | answered a question | Checking Workspace while installing To setup your environment, you should run source devel/setup.bash. Did you run source devel/setup.bash? |
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2019-12-10 10:38:08 -0500 | commented question | openai_ros turtlebot2 example launch fails due to xml/xacro error maybe examine turtlebot_library.urdf.xacro? |
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2019-12-10 09:29:17 -0500 | answered a question | units of twist.angular.z 1 radian ~= 57 degrees (180/PI). Setting angular.z = 1.0 gives a rotation of ~57 degrees per second. |
2019-12-09 09:37:56 -0500 | commented answer | Path planned through unmapped region for goal present inside map. Please attach the entire modified 'costmap_common_params.yaml'. |
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2019-12-06 10:34:48 -0500 | marked best answer | What is the appropriate nav config for autonomous frontier_exploration? I have a robot that can successfully localize, navigate and reach goals submitted to the move_base package within the ROS Navigation stack. It's using ROS Hydro with Ubuntu 12.04 running on dual-core 1.6 GHz Intel Atom netbook, AMCL and a static map (previously created using teleop/gmapping). Now I would like to use frontier_exploration to have the robot explore autonomously. Actually, I would like it to explore completely unknown space and use gmapping to create a new static map as it explores (not utilizing a previously generated map). I believe this is a supported use case for the frontier_exploration package. Could someone confirm that? On reading the documentation, I see that there are two options:
Regarding the global map: is that a reference to the move_base global costmap, a gmapping map, or a static map on the map server, or other? My impression is it could be any of those (but it's not clear). Is it correct? What is the purpose of frontier_exploration if you already have a global map? If someone would explain that, it would help my understanding. However, as already stated, exploring with a pre-built static global map is not my objective here. In setting up navigation to work with frontier_exploration, I'm faced with the issue of how to configure the navigation stack itself. I think I want to use option #1 above (unless option #2 refers to a map created on-the-fly by gmapping?), which leads me to believe I do not want to load a global map in the navigation launch file. Therefore, I would omit the following (from the move_base node launch): Beyond that, for my above described use case, I should remove the launch of AMCL and substitute it with the launch of gmapping? Is the above correct? Thanks very much for any advice. |
2019-12-05 09:28:49 -0500 | edited answer | Path planned through unmapped region for goal present inside map. Make sure you have set in navfn_global_planner_params.yaml: allow_unknown: false #Specifies whether or not to |
2019-12-05 09:19:55 -0500 | commented answer | Path planned through unmapped region for goal present inside map. Check this... https://answers.ros.org/question/215538/allow_unknown-parameter-ignored/ The above may solve your issue. |
2019-11-27 08:42:05 -0500 | commented answer | How to navigate avoiding obstacles using an existing map generating from hector slam? You can get odometry from hector mapping, although it is more robust to derive this from your robot wheels (eg. using mo |
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2019-11-26 17:13:26 -0500 | answered a question | How to navigate avoiding obstacles using an existing map generating from hector slam? A map is a map. Navigation does not care where it came from (could be gmapping, hector, or other). You should follow the |
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2019-11-26 08:03:16 -0500 | answered a question | Path planned through unmapped region for goal present inside map. Make sure you have set in navfn_global_planner_params.yaml: allow_unknown: false #Specifies whether or not to |
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2019-11-25 12:00:20 -0500 | answered a question | Issue with include: In function 'main': Undefined reference to See http://wiki.ros.org/catkin/CMakeLists.txt#Include_Paths_and_Library_Paths Try specifying the link directory. Exampl |
2019-11-25 08:27:19 -0500 | commented answer | How can I stop printing statements from moveit_commander Python? There was a typo in the original answer (missing period): export ROSCONSOLE_CONFIG_FILE=~/rosconsole.yaml Should |
2019-11-25 08:25:00 -0500 | edited answer | How can I stop printing statements from moveit_commander Python? See here: http://wiki.ros.org/roscpp/Overview/Logging In brief: Set... export ROSCONSOLE_FORMAT='${logger}: ${messag |
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