# ROSDS Support **URL:** https://get-help.theconstruct.ai/c/rosds-support/56.md [Latest](https://get-help.theconstruct.ai/latest.md) · [Categories](https://get-help.theconstruct.ai/categories.md) · [Tags](https://get-help.theconstruct.ai/tags.md) --- ## [About the ROSDS Support category](https://get-help.theconstruct.ai/t/about-the-rosds-support-category/8291)
**Author:** [@bayodesegun](https://get-help.theconstruct.ai/u/bayodesegun)\ **Replies:** 0\ **Last updated:** [February 16, 2021, 8:53am UTC](https://get-help.theconstruct.ai/t/about-the-rosds-support-category/8291 "2021-02-16T08:53:00Z")
This category is for questions related to the ROS Development Studio (ROSDS) of the The Construct app. Before creating a new topic, please search existing topics to see if your question already has an answer. --- ## [Gazebo Launches in Graphical Tool Error](https://get-help.theconstruct.ai/t/gazebo-launches-in-graphical-tool-error/42808)
**Author:** [@malcolm-maurice.holm](https://get-help.theconstruct.ai/u/malcolm-maurice.holm)\ **Replies:** 3\ **Last updated:** [October 13, 2026, 1:17pm UTC](https://get-help.theconstruct.ai/t/gazebo-launches-in-graphical-tool-error/42808 "2026-10-13T13:17:43Z")
I launch Gazebo using a launch file in ros2 humble, but then the Gazebo window opens in the graphical tool window rather than in the simulation window. Unsure off what the error can be but want it to launch in the Simul… --- ## [Urgent restore request for accidentally deleted Rosject – STAIRS2 Demo v1](https://get-help.theconstruct.ai/t/urgent-restore-request-for-accidentally-deleted-rosject-stairs2-demo-v1/42620)
**Author:** [@kshardy1214](https://get-help.theconstruct.ai/u/kshardy1214)\ **Replies:** 10\ **Last updated:** [September 23, 2026, 11:42am UTC](https://get-help.theconstruct.ai/t/urgent-restore-request-for-accidentally-deleted-rosject-stairs2-demo-v1/42620 "2026-09-23T11:42:59Z")
Hi The Construct Support, I accidentally deleted a Rosject from my personal account today, September 19, 2026, and the deletion also caused my original private master Rosject named STAIRS2 Demo v1 to disappear. I need … --- ## [City Lab Real Robot not moving](https://get-help.theconstruct.ai/t/city-lab-real-robot-not-moving/42541)
**Author:** [@fra\_gra](https://get-help.theconstruct.ai/u/fra_gra)\ **Replies:** 2\ **Last updated:** [September 15, 2026, 9:36am UTC](https://get-help.theconstruct.ai/t/city-lab-real-robot-not-moving/42541 "2026-09-15T09:36:05Z")
I was connected to the real robot lab for the course project, but the physical robot did not move; i Tried using both the keyboard teleop tool and the on-screen joystick in the UI, but the physical robot remained comple… --- ## [Rtabmap package disappearing](https://get-help.theconstruct.ai/t/rtabmap-package-disappearing/42458)
**Author:** [@Mexperseiu](https://get-help.theconstruct.ai/u/Mexperseiu)\ **Replies:** 2\ **Last updated:** [September 8, 2026, 8:03am UTC](https://get-help.theconstruct.ai/t/rtabmap-package-disappearing/42458 "2026-09-08T08:03:20Z")
In my private rosject, I need to use Rtabmap. Every time i logout, and some time have passed (about 15 min), and I login back again, the package disappears and i have to reinstall it again. How can I fix/solve this. --- ## [Fastbot is not reponsive](https://get-help.theconstruct.ai/t/fastbot-is-not-reponsive/42404)
**Author:** [@timix295](https://get-help.theconstruct.ai/u/timix295)\ **Replies:** 2\ **Last updated:** [September 4, 2026, 1:31pm UTC](https://get-help.theconstruct.ai/t/fastbot-is-not-reponsive/42404 "2026-09-04T13:31:49Z")
I tried to connect to the Fast Bot but it is not moving. It does not respond to the controls of both the joystick and the teleoperated control for the project. This has occurred since yesterday. Please let this be fixed --- ## [Title: Accidentally overwrote simple\_patrol.bash file in Linux Basics](https://get-help.theconstruct.ai/t/title-accidentally-overwrote-simple-patrol-bash-file-in-linux-basics/42392)
**Author:** [@Rave](https://get-help.theconstruct.ai/u/Rave)\ **Replies:** 2\ **Last updated:** [September 2, 2026, 10:40pm UTC](https://get-help.theconstruct.ai/t/title-accidentally-overwrote-simple-patrol-bash-file-in-linux-basics/42392 "2026-09-02T22:40:37Z")
Body: Hi, I’m working on the “Linux Basics for Robotics” rosject (Part 2 — Create Programs to Control the Robot). While trying to move two provided files (robot\_interface.py and simple\_patrol.bash) from ~/ros2\_ws/src/ … --- ## [Get access to perception (laser / camera) on warehouse UR3e](https://get-help.theconstruct.ai/t/get-access-to-perception-laser-camera-on-warehouse-ur3e/42359)
**Author:** [@ioana.calangiu](https://get-help.theconstruct.ai/u/ioana.calangiu)\ **Replies:** 1\ **Last updated:** [August 31, 2026, 12:10pm UTC](https://get-help.theconstruct.ai/t/get-access-to-perception-laser-camera-on-warehouse-ur3e/42359 "2026-08-31T12:10:33Z")
Hi, I’m working with the UR3e warehouse arm, and I’m trying to get camera/perception input into my code. What I can confirm works: Full arm control via the standard driver topics/actions (/joint\_states, /scaled\_join… --- ## [Rviz not opening on the Linux for Robotics Rosject](https://get-help.theconstruct.ai/t/rviz-not-opening-on-the-linux-for-robotics-rosject/42360)
**Author:** [@officercrafter1005](https://get-help.theconstruct.ai/u/officercrafter1005)\ **Replies:** 1\ **Last updated:** [August 31, 2026, 10:35am UTC](https://get-help.theconstruct.ai/t/rviz-not-opening-on-the-linux-for-robotics-rosject/42360 "2026-08-31T10:35:49Z")
I’m trying to learn Linux for Robotics and the project that comes with the course is not behaving as the course book says. The Gazebo simulation did open, but Rviz is not opening and my terminal seems to get an error. H… --- ## [Small City Lab Real Robot IMU Data Not Working](https://get-help.theconstruct.ai/t/small-city-lab-real-robot-imu-data-not-working/42093)
**Author:** [@dmkorn](https://get-help.theconstruct.ai/u/dmkorn)\ **Replies:** 3\ **Last updated:** [August 10, 2026, 6:59pm UTC](https://get-help.theconstruct.ai/t/small-city-lab-real-robot-imu-data-not-working/42093 "2026-08-10T18:59:42Z")
Hi, My Python3 code works perfectly in the simulator. However, with the real robot I’m not getting IMU Data for Angular Velocity or Linear Acceleration. The values are just 0. --- ## [Small City Lab Real Robot not moving](https://get-help.theconstruct.ai/t/small-city-lab-real-robot-not-moving/42012)
**Author:** [@241595145](https://get-help.theconstruct.ai/u/241595145)\ **Replies:** 1\ **Last updated:** [August 3, 2026, 7:55am UTC](https://get-help.theconstruct.ai/t/small-city-lab-real-robot-not-moving/42012 "2026-08-03T07:55:13Z")
I was connected to the real robot lab for the Linux Basics for Robotics course project, but the physical robot did not move despite everything being verified working correctly: robot\_interface.py started successfully. M… --- ## [Camera not working with Turtlebot](https://get-help.theconstruct.ai/t/camera-not-working-with-turtlebot/41895)
**Author:** [@fra\_gra](https://get-help.theconstruct.ai/u/fra_gra)\ **Replies:** 2\ **Last updated:** [August 1, 2026, 11:43am UTC](https://get-help.theconstruct.ai/t/camera-not-working-with-turtlebot/41895 "2026-08-01T11:43:35Z")
Good afternoon, the camera on the real robot turtlebot is working correctly when i move the robot with " teleop\_twist\_keyboard" but i can see a lot of lag and a camera error when i try to launch service server script a… --- ## [How do I launch RViz for Linux Basics Project I](https://get-help.theconstruct.ai/t/how-do-i-launch-rviz-for-linux-basics-project-i/41969)
**Author:** [@flaviajdy](https://get-help.theconstruct.ai/u/flaviajdy)\ **Replies:** 5\ **Last updated:** [July 29, 2026, 4:49pm UTC](https://get-help.theconstruct.ai/t/how-do-i-launch-rviz-for-linux-basics-project-i/41969 "2026-07-29T16:49:58Z")
Hello, I have started out on Linux Basics for Robotics, I am quite stuck on how to launch RViz in the Course Project I. The simulation is launched in Gazebo but I am failing on how to launch RViz. I used this to launc… --- ## [Turtlebot unresponsive](https://get-help.theconstruct.ai/t/turtlebot-unresponsive/41861)
**Author:** [@adityakapoor906](https://get-help.theconstruct.ai/u/adityakapoor906)\ **Replies:** 1\ **Last updated:** [July 22, 2026, 1:36am UTC](https://get-help.theconstruct.ai/t/turtlebot-unresponsive/41861 "2026-07-22T01:36:40Z")
Hello, I am currently connected to the turtlebot but it is unresponsive. The joystick is not working and the command rostopic list produces an error (ERROR: Unable to communicate with master!). Could this be resolved qu… --- ## [Hostname is rejected by clearpath robot package](https://get-help.theconstruct.ai/t/hostname-is-rejected-by-clearpath-robot-package/41840)
**Author:** [@Abdallah\_hesham99](https://get-help.theconstruct.ai/u/Abdallah_hesham99)\ **Replies:** 1\ **Last updated:** [July 20, 2026, 10:08am UTC](https://get-help.theconstruct.ai/t/hostname-is-rejected-by-clearpath-robot-package/41840 "2026-07-20T10:08:30Z")
I get the following error: $ ros2 launch clearpath\_gz simulation.launch.py \[INFO\] \[launch\]: All log files can be found below /home/user/.ros/log/2026-07-18-20-21-33-178926-4\_xterm-4803 \[INFO\] \[launch\]: Default logging… --- ## [Camera not workinggggg! and idk how to get certficate i have completed course](https://get-help.theconstruct.ai/t/camera-not-workinggggg-and-idk-how-to-get-certficate-i-have-completed-course/41717)
**Author:** [@jegga](https://get-help.theconstruct.ai/u/jegga)\ **Replies:** 1\ **Last updated:** [July 13, 2026, 9:06am UTC](https://get-help.theconstruct.ai/t/camera-not-workinggggg-and-idk-how-to-get-certficate-i-have-completed-course/41717 "2026-07-13T09:06:47Z")
i have completed every thing including courses and rosject in spain. but i am not assigned any grade or given certfificate please help. --- ## [Small city robot not working — confirmed hardware issue, not code](https://get-help.theconstruct.ai/t/small-city-robot-not-working-confirmed-hardware-issue-not-code/41657)
**Author:** [@btbtr24041\_aarushi](https://get-help.theconstruct.ai/u/btbtr24041_aarushi)\ **Replies:** 1\ **Last updated:** [July 6, 2026, 8:07am UTC](https://get-help.theconstruct.ai/t/small-city-robot-not-working-confirmed-hardware-issue-not-code/41657 "2026-07-06T08:07:45Z")
I was connected to the SmallCity Lab (FastBot) real robot for the Linux Basics for Robotics course project. The robot did not move despite the following being verified working correctly: robot\_interface.py started succ… --- ## [Small City Robot Lab Camera Stopped Working Again](https://get-help.theconstruct.ai/t/small-city-robot-lab-camera-stopped-working-again/41604)
**Author:** [@dmkorn](https://get-help.theconstruct.ai/u/dmkorn)\ **Replies:** 1\ **Last updated:** [July 1, 2026, 9:41am UTC](https://get-help.theconstruct.ai/t/small-city-robot-lab-camera-stopped-working-again/41604 "2026-07-01T09:41:51Z")
Hi, This was working in the morning United States EST time, but I experienced the same error this evening when I tried to test some revised code. Edit: This is working again the morning of July 1st US EST. Regads, D… --- ## [Small City Lab Robot Still not Working - Camera and Variables](https://get-help.theconstruct.ai/t/small-city-lab-robot-still-not-working-camera-and-variables/41577)
**Author:** [@dmkorn](https://get-help.theconstruct.ai/u/dmkorn)\ **Replies:** 3\ **Last updated:** [June 30, 2026, 1:56pm UTC](https://get-help.theconstruct.ai/t/small-city-lab-robot-still-not-working-camera-and-variables/41577 "2026-06-30T13:56:45Z")
Hi, I am unable still unable to connect to the robot. There is no camera stream. I tried reconnecting several times. To see if the issue was just the cameras, I tried running a rosjet program. I didn’t get Angular V… --- ## [Python Basics for Robotics Laser Identification issue](https://get-help.theconstruct.ai/t/python-basics-for-robotics-laser-identification-issue/41531)
**Author:** [@janimahmood22](https://get-help.theconstruct.ai/u/janimahmood22)\ **Replies:** 2\ **Last updated:** [June 29, 2026, 3:21pm UTC](https://get-help.theconstruct.ai/t/python-basics-for-robotics-laser-identification-issue/41531 "2026-06-29T15:21:45Z")
Hello, I was trying to figure out which laser index corresponds to the front, back, left and right and I was doing it by orienting the robot so that the front of the robot was close to the wall and reading the minimum di… --- ## [The robot camera is not streaming, its blank](https://get-help.theconstruct.ai/t/the-robot-camera-is-not-streaming-its-blank/41579)
**Author:** [@wudaal](https://get-help.theconstruct.ai/u/wudaal)\ **Replies:** 5\ **Last updated:** [June 29, 2026, 9:38am UTC](https://get-help.theconstruct.ai/t/the-robot-camera-is-not-streaming-its-blank/41579 "2026-06-29T09:38:12Z")
The robot camera is not streaming, its blank. --- ## [Camera Error for FastBot lab](https://get-help.theconstruct.ai/t/camera-error-for-fastbot-lab/41528)
**Author:** [@janimahmood22](https://get-help.theconstruct.ai/u/janimahmood22)\ **Replies:** 8\ **Last updated:** [June 29, 2026, 9:18am UTC](https://get-help.theconstruct.ai/t/camera-error-for-fastbot-lab/41528 "2026-06-29T09:18:35Z")
Hello, I am doing the Python Basics for Robotics project and the cameras are not working for the FastBot lab. --- ## [Small City Lab Real robot not working](https://get-help.theconstruct.ai/t/small-city-lab-real-robot-not-working/41521)
**Author:** [@adityakapoor906](https://get-help.theconstruct.ai/u/adityakapoor906)\ **Replies:** 2\ **Last updated:** [June 25, 2026, 8:17am UTC](https://get-help.theconstruct.ai/t/small-city-lab-real-robot-not-working/41521 "2026-06-25T08:17:08Z")
Hello, I have been trying to connect to the small city lab robot since last night and unfortunately it is not working. It does not move with the on screen joystick or the teleop program. How can I resolve this issue? T… --- ## [Ambiguous Wording in Part 2 of Pythons Basics for Robotics Project](https://get-help.theconstruct.ai/t/ambiguous-wording-in-part-2-of-pythons-basics-for-robotics-project/41474)
**Author:** [@janimahmood22](https://get-help.theconstruct.ai/u/janimahmood22)\ **Replies:** 1\ **Last updated:** [June 22, 2026, 8:08am UTC](https://get-help.theconstruct.ai/t/ambiguous-wording-in-part-2-of-pythons-basics-for-robotics-project/41474 "2026-06-22T08:08:58Z")
Hello, I wanted to ask what the difference is between the timed move front and move distance front functions. They both seem to be the same function as both essentially only take in a linear speed value to make the robot… --- ## [URDF Real robot joint\_states, RViz LaserScan](https://get-help.theconstruct.ai/t/urdf-real-robot-joint-states-rviz-laserscan/41065)
**Author:** [@ninadmehta34](https://get-help.theconstruct.ai/u/ninadmehta34)\ **Replies:** 16\ **Last updated:** [June 15, 2026, 11:24am UTC](https://get-help.theconstruct.ai/t/urdf-real-robot-joint-states-rviz-laserscan/41065 "2026-06-15T11:24:39Z")
Hello, I am working on the Real Robot Project of the ‘URDF for ROS2’ course. I have built fastbot\_real.urdf for the real robot. When connected to the physical robot, I get “No transform from \[left\_wheel\] to \[base\_lin… --- ## [Getting Multiple "Package \[fastbot\_description\] does not exist" Errors on Linux Basics Real Robot Project (Part 1)](https://get-help.theconstruct.ai/t/getting-multiple-package-fastbot-description-does-not-exist-errors-on-linux-basics-real-robot-project-part-1/41243)
**Author:** [@zumsie](https://get-help.theconstruct.ai/u/zumsie)\ **Replies:** 2\ **Last updated:** [June 3, 2026, 11:46am UTC](https://get-help.theconstruct.ai/t/getting-multiple-package-fastbot-description-does-not-exist-errors-on-linux-basics-real-robot-project-part-1/41243 "2026-06-03T11:46:02Z")
I’m completely new to Linux and ROS, so apologies if this is user error! I’m working on part 1 of the Linux Basics Real Robot Project - Get to Know the Robot and the Lab. I ran the following command after connecting to… --- ## [Linux Basics for Robotics Course Notebook only loads partially](https://get-help.theconstruct.ai/t/linux-basics-for-robotics-course-notebook-only-loads-partially/41095)
**Author:** [@danielmanu](https://get-help.theconstruct.ai/u/danielmanu)\ **Replies:** 1\ **Last updated:** [May 20, 2026, 1:03pm UTC](https://get-help.theconstruct.ai/t/linux-basics-for-robotics-course-notebook-only-loads-partially/41095 "2026-05-20T13:03:33Z")
Hi there. For some of my students, the Jupyter notebook for the Linux Basics for Robotics Course only loads up to Part 2. They can’t see Part 3, no matter how many times they refresh the notebook, reload it, or try to ex… --- ## [URDF Real Robot Project Part II](https://get-help.theconstruct.ai/t/urdf-real-robot-project-part-ii/40955)
**Author:** [@ninadmehta34](https://get-help.theconstruct.ai/u/ninadmehta34)\ **Replies:** 7\ **Last updated:** [May 15, 2026, 10:02am UTC](https://get-help.theconstruct.ai/t/urdf-real-robot-project-part-ii/40955 "2026-05-15T10:02:15Z")
Hello, @duckfrost2 @girishkumar.kannan I am trying to add Gazebo Plug-ins for the second part of the URDF Project. I have added the plugs ins but whenever I try to spawn the robot, the sim shuts down. Following is the … --- ## [URDF Real Robot Project Part 1](https://get-help.theconstruct.ai/t/urdf-real-robot-project-part-1/40688)
**Author:** [@ninadmehta34](https://get-help.theconstruct.ai/u/ninadmehta34)\ **Replies:** 4\ **Last updated:** [April 20, 2026, 5:42pm UTC](https://get-help.theconstruct.ai/t/urdf-real-robot-project-part-1/40688 "2026-04-20T17:42:06Z")
Hi, I am working on Part I of the URDF project and I have the urdf file ready. I am at the step where we need to set files up to spawn the robot in Gazebo (have included the gazebo references and the collision and inert… --- ## [URDF Real Robot Step 2](https://get-help.theconstruct.ai/t/urdf-real-robot-step-2/40441)
**Author:** [@phillip.jr.hogan](https://get-help.theconstruct.ai/u/phillip.jr.hogan)\ **Replies:** 2\ **Last updated:** [March 26, 2026, 1:54pm UTC](https://get-help.theconstruct.ai/t/urdf-real-robot-step-2/40441 "2026-03-26T13:54:14Z")
Hello, I have a quick question on the Real Robot Project Step 2 of the URDF for ROS2 course. On the real Fastbot I am unclear if I need to use the joint state publisher - I thought not, but my wheels do not get transfo… [Next page](https://get-help.theconstruct.ai/c/rosds-support/56.md?page=1)