# Ask **URL:** https://forum.hello-robot.com/c/ask/5.md?page=2 [Latest](https://forum.hello-robot.com/latest.md) · [Categories](https://forum.hello-robot.com/categories.md) **Page:** 3 --- ## [Issues with Map Demo and stretch\_install](https://forum.hello-robot.com/t/issues-with-map-demo-and-stretch-install/1362)
**Author:** [@cscott](https://forum.hello-robot.com/u/cscott)\ **Replies:** 8\ **Last updated:** [July 30, 2025, 12:06pm UTC](https://forum.hello-robot.com/t/issues-with-map-demo-and-stretch-install/1362 "2025-07-30T12:06:35Z")
Hey there! We’re having some issues getting Demo #1: Mapping and Navigation working properly. Upon running ros2 launch stretch\_nav2 offline\_mapping.launch.py the RViz window appears, however the map frame doesn’t exist a… --- ## [The robot shut down for the first time, and now it won't start up again](https://forum.hello-robot.com/t/the-robot-shut-down-for-the-first-time-and-now-it-wont-start-up-again/1372)
**Author:** [@wyn15811017](https://forum.hello-robot.com/u/wyn15811017)\ **Replies:** 1\ **Last updated:** [July 29, 2025, 4:12pm UTC](https://forum.hello-robot.com/t/the-robot-shut-down-for-the-first-time-and-now-it-wont-start-up-again/1372 "2025-07-29T16:12:01Z")
The robot won’t start up after the first shutdown. We can hear the Ubuntu startup sound when pressing the start button, but there is no display on the monitor, and the LiDAR doesn’t run. We have tried to use another moni… --- ## [Stretch 3 Offload Computing to Jetson AGX Orin](https://forum.hello-robot.com/t/stretch-3-offload-computing-to-jetson-agx-orin/1070)
**Author:** [@ashishderiya](https://forum.hello-robot.com/u/ashishderiya)\ **Replies:** 4\ **Last updated:** [July 25, 2025, 9:45pm UTC](https://forum.hello-robot.com/t/stretch-3-offload-computing-to-jetson-agx-orin/1070 "2025-07-25T21:45:34Z")
Hello all, I’m encountering an error while following this guide, https://docs.hello-robot.com/0.3/ros2/remote\_compute/ on offloading computation from the Hello Robot Stretch 3 to the NVIDIA Jetson AGX Orin. I’m currentl… --- ## [Error occurred after updating the hardware accessories](https://forum.hello-robot.com/t/error-occurred-after-updating-the-hardware-accessories/1369)
**Author:** [@Hotcat](https://forum.hello-robot.com/u/Hotcat)\ **Replies:** 2\ **Last updated:** [July 23, 2025, 5:40am UTC](https://forum.hello-robot.com/t/error-occurred-after-updating-the-hardware-accessories/1369 "2025-07-23T05:40:05Z")
We recently received a shipment from Hello Robot Inc. for the replacement of a broken rubber band on our Stretch RE-2 robot, along with additional hardware accessories for an upgrade. During the process of formatting the… --- ## [Robot Model not showing up on Rviz](https://forum.hello-robot.com/t/robot-model-not-showing-up-on-rviz/1356)
**Author:** [@sahitha](https://forum.hello-robot.com/u/sahitha)\ **Replies:** 5\ **Last updated:** [July 4, 2025, 12:35am UTC](https://forum.hello-robot.com/t/robot-model-not-showing-up-on-rviz/1356 "2025-07-04T00:35:28Z")
Hello! I followed this tutorial: RViz Basics - Stretch Documentation. I am using ROS2 Humble, and I am trying to visualize in RViz. In RViz, there are no errors but the Robot Model is not showing. --- ## [Ideas to improve the odometry of the robot](https://forum.hello-robot.com/t/ideas-to-improve-the-odometry-of-the-robot/1351)
**Author:** [@Benoit](https://forum.hello-robot.com/u/Benoit)\ **Replies:** 3\ **Last updated:** [June 25, 2025, 6:57pm UTC](https://forum.hello-robot.com/t/ideas-to-improve-the-odometry-of-the-robot/1351 "2025-06-25T18:57:28Z")
Wheel odometry is the default odometry source for the robot’s base. Based on our experience, the wheel odometry is completely unusable if the robot operates on carpet, which is common indoors. To overcome this problem, … --- ## [D435if Camera not working on Ubuntu 22.04](https://forum.hello-robot.com/t/d435if-camera-not-working-on-ubuntu-22-04/1349)
**Author:** [@orhernand](https://forum.hello-robot.com/u/orhernand)\ **Replies:** 2\ **Last updated:** [June 24, 2025, 3:23pm UTC](https://forum.hello-robot.com/t/d435if-camera-not-working-on-ubuntu-22-04/1349 "2025-06-24T15:23:06Z")
I’ve gotten the game controller KC-8236 functioning on a Hello Robot Stretch 3 but the D435if camera will not operate and messages indicate ROS 01 needed. Tried to launch it manually but fails. The gripper camera is wo… --- ## [Stretch3 lift/arm does not move in Trajectory mode](https://forum.hello-robot.com/t/stretch3-lift-arm-does-not-move-in-trajectory-mode/1061)
**Author:** [@leograyc](https://forum.hello-robot.com/u/leograyc)\ **Replies:** 11\ **Last updated:** [June 4, 2025, 9:02pm UTC](https://forum.hello-robot.com/t/stretch3-lift-arm-does-not-move-in-trajectory-mode/1061 "2025-06-04T21:02:32Z")
When launching the stretch\_driver in trajectory mode: ros2 launch stretch\_core stretch\_driver.launch.py mode:=trajectory, then using ros action client to send trajectory to /stretch\_controller/follow\_joint\_trajectory. Th… --- ## [Issues with align\_to\_aruco Launch: Warnings and No Navigation](https://forum.hello-robot.com/t/issues-with-align-to-aruco-launch-warnings-and-no-navigation/1040)
**Author:** [@allen](https://forum.hello-robot.com/u/allen)\ **Replies:** 10\ **Last updated:** [May 16, 2025, 4:59pm UTC](https://forum.hello-robot.com/t/issues-with-align-to-aruco-launch-warnings-and-no-navigation/1040 "2025-05-16T16:59:33Z")
Hi! I’ve been following this part of the tutorial for the align\_to\_aruco package, but I’m encountering issues when trying to align the Stretch 3 robot with the ArUco cube. After pointing the camera at the cube and runni… --- ## [Issues when upgrading RE1 to Ubuntu 22.04](https://forum.hello-robot.com/t/issues-when-upgrading-re1-to-ubuntu-22-04/1335)
**Author:** [@argen1s](https://forum.hello-robot.com/u/argen1s)\ **Replies:** 7\ **Last updated:** [May 7, 2025, 6:03pm UTC](https://forum.hello-robot.com/t/issues-when-upgrading-re1-to-ubuntu-22-04/1335 "2025-05-07T18:03:39Z")
Hi all, I hope you are doing well. I am facing a problem when upgrading my RE1 machine to Ubuntu 22.04. I followed the guide Upgrading your Operating System, and got to the point of running the stretch\_robot\_home.py scr… --- ## [Porting Gazebo to ROS2](https://forum.hello-robot.com/t/porting-gazebo-to-ros2/849)
**Author:** [@mlalji](https://forum.hello-robot.com/u/mlalji)\ **Replies:** 20\ **Last updated:** [April 23, 2025, 4:58pm UTC](https://forum.hello-robot.com/t/porting-gazebo-to-ros2/849 "2025-04-23T16:58:30Z")
I am trying to create a gazebo simulation for the stretch 2 in ros2. First of all, is there any particular reason as to why the stretch\_gazebo package hasn’t been ported to ros2? If not, how would I go about implementing… --- ## [Gripper Not Homing – Motors Spin but Fingers Don’t Close (Hardware Issue?) – Seeking Temporary Workaround](https://forum.hello-robot.com/t/gripper-not-homing-motors-spin-but-fingers-don-t-close-hardware-issue-seeking-temporary-workaround/1331)
**Author:** [@Mayank\_Anand](https://forum.hello-robot.com/u/Mayank_Anand)\ **Replies:** 0\ **Last updated:** [April 18, 2025, 3:20pm UTC](https://forum.hello-robot.com/t/gripper-not-homing-motors-spin-but-fingers-don-t-close-hardware-issue-seeking-temporary-workaround/1331 "2025-04-18T15:20:55Z")
Hello Everyone, I’m running into a problem with my Stretch 3 robot’s gripper: when I issue the homing command, I can hear the gripper motors spin, but the fingers never close or move. The gripper fails to register a hom… --- ## [Grasp\_object error](https://forum.hello-robot.com/t/grasp-object-error/1309)
**Author:** [@hhhh](https://forum.hello-robot.com/u/hhhh)\ **Replies:** 3\ **Last updated:** [April 16, 2025, 12:32am UTC](https://forum.hello-robot.com/t/grasp-object-error/1309 "2025-04-16T00:32:08Z")
Hello! When I tried to run ros2 launch stretch\_demos grasp\_object.launch.py, an error occurred after the object was detected. I have tried the script, but it still doesn’t work. May I ask what happened? I hope you can h… --- ## [Gradual rotation when with translation command only](https://forum.hello-robot.com/t/gradual-rotation-when-with-translation-command-only/1304)
**Author:** [@yuzumon\_2013](https://forum.hello-robot.com/u/yuzumon_2013)\ **Replies:** 3\ **Last updated:** [April 10, 2025, 3:40am UTC](https://forum.hello-robot.com/t/gradual-rotation-when-with-translation-command-only/1304 "2025-04-10T03:40:36Z")
Hello, I’m currently working on a project using the Stretch 3 robot. However, I’m encountering an issue when controlling Stretch 3. Referring to the stretch\_ai GitHub repository, I was able to operate the robot with t… --- ## [Unable to boot into full partition on Stretch2](https://forum.hello-robot.com/t/unable-to-boot-into-full-partition-on-stretch2/1315)
**Author:** [@Maria\_Lusardi](https://forum.hello-robot.com/u/Maria_Lusardi)\ **Replies:** 2\ **Last updated:** [April 9, 2025, 8:10pm UTC](https://forum.hello-robot.com/t/unable-to-boot-into-full-partition-on-stretch2/1315 "2025-04-09T20:10:07Z")
We have a dual booted Stretch 2. The original partition has Ubuntu 20.04 and the newer partition has Ubuntu 22.04. When working in 22.04 we were often getting errors about the disk space being full. After awhile the syst… --- ## [Convert the stretch\_docking code to ROS2](https://forum.hello-robot.com/t/convert-the-stretch-docking-code-to-ros2/1301)
**Author:** [@tammerhaddad](https://forum.hello-robot.com/u/tammerhaddad)\ **Replies:** 3\ **Last updated:** [March 31, 2025, 8:39pm UTC](https://forum.hello-robot.com/t/convert-the-stretch-docking-code-to-ros2/1301 "2025-03-31T20:39:31Z")
Hi, I’m trying to set up the docking station for the stretch, and I’m using the github code, which hasn’t been perfected but i got it mostly working. However, I need to incorporate it into my ROS2 framework. Does anybod… --- ## [Switching to ROS2](https://forum.hello-robot.com/t/switching-to-ros2/1295)
**Author:** [@allib](https://forum.hello-robot.com/u/allib)\ **Replies:** 1\ **Last updated:** [March 29, 2025, 1:22am UTC](https://forum.hello-robot.com/t/switching-to-ros2/1295 "2025-03-29T01:22:17Z")
Hi! I am trying to switch my Stretch RE2 to ROS2 following the Getting Started - ROS2 Tutorials page. I run into trouble when I try to refresh the ROS2 Workspace to ensure I am working with the most up to date version. W… --- ## [Error Running run\_stretch\_ai\_ros2\_bridge\_server.sh on Stretch](https://forum.hello-robot.com/t/error-running-run-stretch-ai-ros2-bridge-server-sh-on-stretch/1296)
**Author:** [@olaghattas](https://forum.hello-robot.com/u/olaghattas)\ **Replies:** 1\ **Last updated:** [March 26, 2025, 4:55pm UTC](https://forum.hello-robot.com/t/error-running-run-stretch-ai-ros2-bridge-server-sh-on-stretch/1296 "2025-03-26T16:55:10Z")
Hi, I am trying to get stretch\_ai to work on Stretch, but I am encountering an error when running the following command on the robot: ./scripts/run\_stretch\_ai\_ros2\_bridge\_server.sh Here is the error message for refere… --- ## [Invalid parameter value (63) in realsense2\_camera\_node - How to fix?](https://forum.hello-robot.com/t/invalid-parameter-value-63-in-realsense2-camera-node-how-to-fix/1291)
**Author:** [@Mayank\_Anand](https://forum.hello-robot.com/u/Mayank_Anand)\ **Replies:** 1\ **Last updated:** [March 24, 2025, 11:40pm UTC](https://forum.hello-robot.com/t/invalid-parameter-value-63-in-realsense2-camera-node-how-to-fix/1291 "2025-03-24T23:40:38Z")
Hi, I am using an Intel RealSense camera with the realsense2\_camera ROS2 driver. When running my object detection node in stretch deep perception , I get the following error in the logs: \[realsense2\_camera\_node-4\] \[ERRO… --- ## [Delivery plate (shoulder) drawing/dimensions](https://forum.hello-robot.com/t/delivery-plate-shoulder-drawing-dimensions/1279)
**Author:** [@kallet](https://forum.hello-robot.com/u/kallet)\ **Replies:** 1\ **Last updated:** [March 24, 2025, 6:37pm UTC](https://forum.hello-robot.com/t/delivery-plate-shoulder-drawing-dimensions/1279 "2025-03-24T18:37:08Z")
Hello! We plan to connect own device to shoulder, on so-called delivery plate. Where can I find drawing with dimensions? When there are nice engineering drawings about base unit and head then shoulder part is only outli… --- ## [Issue with Demo Navigation Script on Stretch3](https://forum.hello-robot.com/t/issue-with-demo-navigation-script-on-stretch3/1267)
**Author:** [@zyaskawa](https://forum.hello-robot.com/u/zyaskawa)\ **Replies:** 4\ **Last updated:** [March 24, 2025, 4:24pm UTC](https://forum.hello-robot.com/t/issue-with-demo-navigation-script-on-stretch3/1267 "2025-03-24T16:24:50Z")
From the Navigation Demo: Demo 1 - Mapping & Navigation - Stretch Docs With the navigation python command, when we run: ros2 launch stretch\_nav2 navigation.launch.py map:=${HELLO\_FLEET\_PATH}/maps/nav2\_demo\_map.yaml , … --- ## [Inverse Kinematics for Stretch3](https://forum.hello-robot.com/t/inverse-kinematics-for-stretch3/1262)
**Author:** [@keshavshankar](https://forum.hello-robot.com/u/keshavshankar)\ **Replies:** 1\ **Last updated:** [March 21, 2025, 10:05pm UTC](https://forum.hello-robot.com/t/inverse-kinematics-for-stretch3/1262 "2025-03-21T22:05:09Z")
I’m exploring pick-and-place tasks using the Stretch 3 and looking for demos that allow me to specify a target 3D position relative to the base link, enabling it to move its gripper to that position. I assume demos like a… --- ## [Incorrect Movement Distance with robot.base.translate\_by()](https://forum.hello-robot.com/t/incorrect-movement-distance-with-robot-base-translate-by/1286)
**Author:** [@keshavshankar](https://forum.hello-robot.com/u/keshavshankar)\ **Replies:** 2\ **Last updated:** [March 21, 2025, 8:36pm UTC](https://forum.hello-robot.com/t/incorrect-movement-distance-with-robot-base-translate-by/1286 "2025-03-21T20:36:17Z")
I ran into an issue where the robot.base.translate\_by() method fails to move at values larger than ~ ±1.8 meters. I am using this basic python script to move the robot: from stretch\_body.robot import Robot robot = Ro… --- ## [Issues with Demo FUNmap Script on Stretch3](https://forum.hello-robot.com/t/issues-with-demo-funmap-script-on-stretch3/1268)
**Author:** [@zyaskawa](https://forum.hello-robot.com/u/zyaskawa)\ **Replies:** 2\ **Last updated:** [March 21, 2025, 8:27pm UTC](https://forum.hello-robot.com/t/issues-with-demo-funmap-script-on-stretch3/1268 "2025-03-21T20:27:25Z")
From these demo instructions (Demo 1 - Mapping & Navigation - Stretch Docs), we were unable to get FUNmap script to work as RViz does not show up. Script: ros2 launch stretch\_funmap mapping.launch.py I have attached RO… --- ## [Robot Making Noise](https://forum.hello-robot.com/t/robot-making-noise/1263)
**Author:** [@allib](https://forum.hello-robot.com/u/allib)\ **Replies:** 2\ **Last updated:** [March 21, 2025, 6:03pm UTC](https://forum.hello-robot.com/t/robot-making-noise/1263 "2025-03-21T18:03:49Z")
Hi, my robot is making noises similar to that decsribed in Stretch suddenly making noise. I have emailed support, but wanted to get further clarification/reassurance on whether or not I should continue working with Stre… --- ## [Severe issues with trajectory mode](https://forum.hello-robot.com/t/severe-issues-with-trajectory-mode/1282)
**Author:** [@snoato](https://forum.hello-robot.com/u/snoato)\ **Replies:** 3\ **Last updated:** [March 20, 2025, 8:28pm UTC](https://forum.hello-robot.com/t/severe-issues-with-trajectory-mode/1282 "2025-03-20T20:28:27Z")
Our Stretch 3 has been facing significant issues in trajectory mode. Previously we only did minor tests in position mode (due to the projects related to it being used not having started yet/focusing on simulation) and su… --- ## [Localization on Map with Web Teleop on Stretch 3](https://forum.hello-robot.com/t/localization-on-map-with-web-teleop-on-stretch-3/1274)
**Author:** [@zyaskawa](https://forum.hello-robot.com/u/zyaskawa)\ **Replies:** 3\ **Last updated:** [March 20, 2025, 8:10pm UTC](https://forum.hello-robot.com/t/localization-on-map-with-web-teleop-on-stretch-3/1274 "2025-03-20T20:10:32Z")
Following these instructions: https://docs.hello-robot.com/0.3/getting\_started/demos\_web\_teleop/ with this script: ./launch\_interface.sh -m ${HELLO\_FLEET\_PATH}/maps/nav2\_demo\_map.yaml For our map, we borrowed a map fro… --- ## [Indeterministic FollowJointTrajectory action server. First try: Goal aborted: Second try: Succesful](https://forum.hello-robot.com/t/indeterministic-followjointtrajectory-action-server-first-try-goal-aborted-second-try-succesful/1245)
**Author:** [@MoKari](https://forum.hello-robot.com/u/MoKari)\ **Replies:** 3\ **Last updated:** [March 10, 2025, 4:01pm UTC](https://forum.hello-robot.com/t/indeterministic-followjointtrajectory-action-server-first-try-goal-aborted-second-try-succesful/1245 "2025-03-10T16:01:21Z")
Hi there, Goals sent to the FollowJointTrajectory action server via ros2 frequently fail despite lying in the numerical range of the joint DoF. Below is an example where I first set lift & pitch to 0.3 and 0.4 respec… --- ## [Getting transform using python API](https://forum.hello-robot.com/t/getting-transform-using-python-api/1252)
**Author:** [@ris7188](https://forum.hello-robot.com/u/ris7188)\ **Replies:** 1\ **Last updated:** [March 6, 2025, 1:48pm UTC](https://forum.hello-robot.com/t/getting-transform-using-python-api/1252 "2025-03-06T13:48:21Z")
I am working on Hello Robot and am exploring python API. I would like to know if there is a way to get tranform of the base. I am trying to make head camera detect aruco marker and then move the robot close to the marker… --- ## [Help Needed: Build Error with stretch\_funmap Due to Numpy Dependency](https://forum.hello-robot.com/t/help-needed-build-error-with-stretch-funmap-due-to-numpy-dependency/1191)
**Author:** [@allen](https://forum.hello-robot.com/u/allen)\ **Replies:** 6\ **Last updated:** [February 20, 2025, 8:24pm UTC](https://forum.hello-robot.com/t/help-needed-build-error-with-stretch-funmap-due-to-numpy-dependency/1191 "2025-02-20T20:24:29Z")
Hi everyone, I’m encountering a build error while setting up the Hello Robot workspace. Here’s what I did: Cloned the repository: cd ~ git clone https://github.com/hello-robot/stretch\_install cd stretch\_install git p… [Previous page](https://forum.hello-robot.com/c/ask/5.md?page=1) [Next page](https://forum.hello-robot.com/c/ask/5.md?page=3)