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When launching nodes which use TF2, the namespace doesn't appear to show up under the TF2 messages meaning you can't differentiate between robots/sensors.
How do I solve this?
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I am currently working on a project that involves communication between a ROS (Robot Operating System) environment and an Allen-Bradley CompactLogix PLC using Modbus TCP. I have encountered an issue with the Modbus connection, and I would appreciate any guidance or insights on resolving it.
Problem Description:
I am at... |
I have been trying to use a custom message called sPoses from one package (jackal_2dnav) in another (explore) in the same ROS workspace, but I have been unable to get it to work. I added jackal_2dnav as a dependency for explore in its package.xml, but when I would run catkin build, I would get the following error-
In f... |
Gazebo version 11.10.2
The problem is putting one brick on top of another - bricks are jumping.
I need this to simulate a robotic wall building process.
I made an experiment.
There are two pairs of bricks:
1st pair - primitive bricks, made of primitive boxes from standard Gazebo cube.
2nd pair - stel bricks, made of s... |
I am trying to solve this issue on the gz-math repo. My initial approach was to make changes to CMakeFiles.txt inside gz-math and add a cpp code to convert a quaternion given in arguments to Euler Angles. However, this approach does not seem to work. The issue mentions the use of gz-tools or ign-tools and links a file ... |
I am trying to teach myself how an MPC works by implementing one from scratch.
I found a great resource that explains how an MPC works: https://cse.sc.edu/~gatzke/cache/npc-Chapter5-scan.pdf
There are 3 variables (referring to the first MPC example in the pdf file)
x1, x2, and u
The objective of the MPC is to keep x2... |
Note: My application is not robotics, but purely theoretical. I have been suggested to ask this question on the robotics forum. The results of the project could easily be applied to robotics however and so I believe it is also suitable for this forum.
I am building a 2D Electric unicycle model and have a somewhat trivi... |
In ROS 2 Humble, I'm seeing behavior from the Nav2 DWB controller that fails to successfully plan a path. Lots of No valid trajectories out of 419! are in the logs when this occurs.
Attached are screenshots showing that the DWB planner isn't even considering trajectories that might go around the obstacle.
Note that t... |
What is the Gazebo GPS Sensor Noise Model based on? It looks like a Random Walk through the code, but would be great if I could get some confirmation about it.
Also, is HDOP and VDOP (DOP - dilution of precision) modeled in the sensor?
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I'm using an RPLidar A2 for Slam on my robot but after mapping, when I am trying to localise, the lidar shows very few points. Is this normal? This lidar supposedly has a 12m range. Because it sees very few points, AMCL is having a hard time localising.
Any help would be appereciated! I'm running out of time :(
Have a ... |
I am trying to reset model position at a specific condition in ros2 humble. I found "/gazebo_msgs/srv/SetModelState" would be helpful in resetting position but it is not available when I run "ros2 service list". Any other alternative to reset position would also be helpful.
NOTE: I want to reset position and not re-spa... |
I am building a robot to perform path planning using djikstra algorithm and obstacle avoidance using gaussian potential field. The robot uses raspberry Pi 4 with ubuntu 20.04 os containing gazebo, ros noetic and rviz. It has 4 motors, 2 l298n motor drivers and tf luna lidar. I need a code containing path planning using... |
As the title mentioned, I made models with urdf files, find some public sdf models, and use the build editor in gazebo to generate walls. However I couldn't find a way to launch them other than launching the urdf model and manually putting sdf and walls in one by one. I've tried to save the built world and launched the... |
I am working on a 4 wheel ackermann steering car which is expected to respawn on the track once it moves out of the track.
I am able to respawn it successfully with "delete_entity" and "spawn_entity" service but the issue is after being respawned, I am unable to control the robot.
After printing the output of "ros2 top... |
I hope someone can help me
I'm using robot_localization to improve my location estimation using the following ekf nodes
ekf_node_odom: odometry + IMU
ekf_node_map: odometry + IMU + GPS
the first node ekf_node_odom fusion odometry and IMU smoothly, below the image.
green: raw odometry of my vehicle
red: odometry ekf_... |
A friend and I have been trying to get a GPS system integrated into an automated robot, and the GPS fix is publishing, and sending data to the navsat_transform node. We're also sending it odometry data and we're publishing IMU data through the commandline because we don't have an IMU set up at the moment. We've tried t... |
i want to move to the package from any directory inside our terminal window
qrie@qrie-HP-Laptop-15-rb0xx:~/dev_ws$ colcon_cd two_wheeled_robot
colcon_cd: command not found
|
I am trying to navigate a drone moves towards target(car) using PPO algo. after 1320 episodes, I got this message:
WARNING: supervisor_manager: The process crashed some time after starting successfully.
Fail to allocate bitmap
in the supervisor controller, after every episode the initial position of both target ... |
I'm experiencing some challenges trying to get a realistic GPS output from my simulation. I'm based in New Zealand so my real-world Lat/Long is in the -40.3789 and 175.6129 range in WGS84, but when I set the WorldInfo of my simulation to these values, the position response from my GPS devices is way off from that refer... |
I want to delay a ROS2 Node, This answer is given respect to ROS1:
Whats the equivalent in ROS2. A quick on the fly time.sleep() but for ROS because I know time.sleep() in ros is a nono.
|
I installed Ubuntu 20.04-LST, started "roscore", and then executed
roslaunch epuck_driver_cpp epuck2_controller.launch epuck2_address:='192.168.11.108'
However, it resulted in an error
[epuck2_robot_0-1] process has died [pid 7332, exit code 1, cmd /home/bcfy/epuck2_ws/devel/lib/epuck_driver_cpp/epuck_driver_cpp
The ... |
I've setup two ubuntu 22.04 computers with ros2 humble on the same network using two different routers.
When both computers are connected via Wi-Fi to a GL-MT300N-V2 Mini Smart Router, I run a talker on one computer and a listener on the other computer, and it works flawlessly without changing any configuration on the... |
The 32FN method is a fast and effective method to estimate surface normal from a structured depth image. It appears the authors uses a "in-painting" method (please correct me if I am wrong) to smooth out the image for use. The images they showcased is from the Augmented ICL NUIM dataset
Is anyone familiar with the dept... |
I have problems with de simulation with ros galactic, I can't to generate a map, I believe that the problem is the rplidar, because when I ran the next command
ros2 topic echo /scan
I got this,
Also when I am in simulation and generating the map, Turtlebot4 does not recognize the objects in the world and I suppose t... |
I hope you're all having a great day!
I'm here with a couple of questions regarding IMUs and their drivers:
For those familiar with the Adafruit BNO055 IMU connected to an Arduino Uno, which specific driver is typically used for interfacing with this setup?
Additionally, I'm curious if there's a driver available that... |
Executable files generated through catkin_make run normally. However, executables from deb packages created with bloom-generate encounter an issue where the main function is called repeatedly after installation.
The root of the problem seems to be my attempt to modify a member variable within a class from a callback fu... |
Can a custom hardware interface access parameters on the parameter server other than HardwareInfo? For example, the parameters in the controller.yaml file? How can I access them?
In ROS1 for example, I can access root_nh.getParam("controllers_namespace", controllers_namespace)) to get parameter in yaml file. Can ROS2 d... |
my problem is that when I give 2D pose estimation, to estimate the robot pose of the real robot, the robot, the lidar scan and the local costmap will start to move left and right, basically, the map->odom transformation is changing continuously. Is this due to the local localization or this is due to the AMCL?
Thanks.
... |
Hello Im trying to autonomously navigate a robot using ros. I have created a launch file to start the navigation stack for the robot
Here is my launch file for the robot.
<launch>
<include file="$(find diff_drive)/launch/cam.launch"/>
<arg name="map_file" default="$(find diff_drive)/maps/arimac_company.yaml"/>
<node ... |
I finally managed to make my manipulator work also with Pose Goal using KDL as Inverse Kinematics plugin.
The problem is that I cannot in any way go below a certain level of position tolerance (0.12) which is too high to be able to pick up the objects on the table, is there any workaround?
My eef is gripper_grasp_link ... |
I have a question about position estimation when a robot performs pivot turn.
In pivot turn, it is ideal for only the robot's yaw angle to change, while the x and y positions remain constant.
But, I have found that during actual pivot turn of the robot, the the estimated x and y values from EKF change by about 1 meter.... |
I saw that for ROS1 there is this local filter for the lidar scan that is masking the robot shape, there is something similar for ROS2?
From what I saw there isn't.
Do you have any suggestions on how I can make a simple filter that hides the robot structure from the laser scan data?
|
I have this seemingly simple launch file:
<launch>
<arg name="launch_nav" default="false" />
<include
file="$(find-pkg-share turtlebot3_gazebo)/launch/turtlebot3_world.launch.py"
unless="$(var launch_nav)"
/>
<include
file="$(find-pkg-share rtabmap_demos)/launch/turtlebot3_scan.launch.p... |
I'm running some C++ unit tests in CI with
catkin run_tests my_pkg
I wanted to collect the unit tests' output (INFO or higher), similar to when we run
rostest my_pkg my_test.test --text
I've tried looking into XML files, but they don't have console output:
[ROSTEST]Running test [test_battery_exchange]
&#x001B;[1m... |
I have .a file and header file (.h) for an SDK for a thermal sensor.
This is my package structure.
small_thermal
├── CMakeLists.txt
├── include
│ └── small_thermal
│ └── guideusbcamera.h
├── lib
│ └── libGuideUSBCamera.a
├── package.xml
└── src
└── test_small_thermal.cpp
I want to use this library in a R... |
In ROS 2, can services and actions span subnets using TCP as oppose to topics which only use UDP? Also for DDS I found,
This means that all DDS specific APIs and message definitions would need to be hidden. DDS provides discovery, message definition, message serialization, and publish-subscribe transport. Therefore, D... |
I’m pretty new to ROS, gazebo, and robotics software in general. But I use a Mac, which in my experience isn’t the best but it’s kind of my only option for now
I use a Linux virtual machine to run ROS and anything related to it. I’ve tried to use gazebo in that virtual machine but it seems that my virtualization tool (... |
I've created a workspace where I launch a panda robot with a custom controller (CartesianImpedance_trajectory_controller) from https://github.com/matthias-mayr/Cartesian-Impedance-Controller and I'm having some issues when launching both to gazebo. The problem I'm facing is that whenever I launch the robot and the con... |
I am building a bigger model in sdf for gazebo. I have many similar links with only variation in their pose and all other parameters are same. Is there any way to reuse code of the links ?
I have provided a code snippet below. The links 1 to 5 are getting repeated. Ideally I want to make 100s of them in the code and I ... |
I am trying to implement the ZED 2i IMU data into the robot_localization Extended Kalman Filter. The robot_localization package requires the IMU sensor to be in the ENU frame (0 when facing east, and pi/2 when facing north). However, the ZED 2i IMU data automatically sets the orientation to zero for the current orienta... |
I took the boomer example project and changed it to a ros_automobile controller by copying the source of ros_automobile into my project. It works and I can put it into gear and set the throttle and steering angle and the vehicle moves as expected.
rosservice call /automobile/set_gear "value: 1"
rosservice call /automo... |
I would like to be able to read ROS2 parameters of the form:
/**:
ros__parameters:
people:
- name: "Alice"
age: 30
grade: "A+"
- name: "Bob"
age: 25
grade: "B-"
From what I can tell, there doesn't seem to be a great way to do this in ROS2.
The workaround I've been usi... |
the previous package I created can be used smoothly.However,after installing conda and pytorch,the robot description cannot be put on screen correctly.The early verison of robot description in rviz shows the failure of continuous link transform.
|
I try to build nav2_ws from tutorial on nav2 build and install, and I get this error
--- stderr: nav_2d_msgs
Error processing idl file: /home/uchi/nav2_ws/build/nav_2d_msgs/rosidl_adapter/nav_2d_msgs/msg/Path2D.idl
Traceback (most recent call last):
File "/home/uchi/ros2_... |
We are having trouble updating local costmap when using Point cloud data. Sometime costmap reflects the obstacle, but mostly it doesn’t.
We are sharing logs, nav2_params and a sample images
Kindly need help on what wrong are we doing ?
Nav2_params.yaml
amcl:
ros__parameters:
use_sim_time: False
alpha1: 0.2
... |
I am planning to use arduino.
Here, we confirmed that data from products used as I2C can be received via USB or serial.
Now I want to see the data structure in order to read it like pl2303 and use it as a message.
In other words, is it possible that data is received through serial communication without USB(Only use pin... |
I want to do parallel process of multiple subscriptions in a single callback. I have been looking for information, but there is barely any information regarding this in ROS 2 Humble. I found callback groups, but I'm not sure if this addresses my issue. I will provide my current code. I new to ROS 2, so I apologize if t... |
I am Currently work on making my robot to Follow a human using USB camera with ROS2 humble. My aim is to use Dynamic Object Following in NAV2 .
But , for the detection of human I need to make app to send the initial pose to the NavigateToPose action,and update it on a topic for the duration of the task.
Can anyone sugg... |
I am relatively new to working with point cloud data in ROS 2, and I am currently facing an issue with transforming point cloud data. I have been trying to utilize the tf2_sensor_msgs.do_transform_cloud function for transforming point cloud data, but I have discovered that this functionality is not available in ROS 2 h... |
I have a weird problem. I've created script for catching the rospy.log and publishing it into topic and saving to files.txt. It works fine while I'm launching it by rosrun. When ,launch file was created with only this one script - it soesn't work.
Launch file code:
<launch>
<!-- Uruchomienie skryptu przechwytujaceg... |
Duplicate of (https://github.com/orgs/ros-planning/discussions/2737)
I am looking for an up-to-date tutorial on planning with the STOMP planning algorithm. I am using ros Humble on Ubuntu 22.04.4 LTS. However, when I install moveit2 from binary sudo apt-get install ros-humble-moveit*, I encounter exceptions that stomp_... |
currently I am working on visualizing a drone in Gazebo. My base is the sjtu_drone. I am trying to control the propellers of my drone with ros2_control but when i start the ros2 controller manager the terminal says "Controller manager not available" after checking the node list. It appears a node named "simple_drone/co... |
I tried to configure the node on Arduino, but instead, I decided to just configure the controller on the main body and use it.
What advantages does this have?
The advantage of forming a node is that the complexity of the delivery structure is reduced by 1?
What's the downside?
it will be advantage of controller on the ... |
I'm working in a Cartesian impedance controller based in ros_control. So far I managed to programme a controller and load it in a panda robot and it works. Now I wonder about the approach in order to control two robots at the same time as my idea is to manipulate objects using a cartesian impedance control so I dont kn... |
I'm working with a mobile robot with GPS and IMU and I need to get the odometry without encoders so I'm trying to tune the robot_localization pkg for Ros2 Humble using dual ekf and navsat_transform.
I'm using this config in the yaml:
# For parameter descriptions, please refer to the template parameter files for each no... |
I am trying to lift a cylinder with a very simple gripper but when the gripper closes, the cylinder goes through the gripper. The gray cylinder cannot be lifted by the yellow finger. So I cannot lift it. What is wrong? What is my mistake? What should I do? Could you please help me? Below there is URDF File and World Fi... |
I'm trying to write a custom plugin for Gazebo Fortress but facing issues in setting up my development environment. I installed Gazebo Fortress using the Ubuntu binaries as instructed here, but it seems the include headers for gz-common are missing or the entire gz-common library is missing. See the screenshot below. H... |
Working on a few Aquatic projects right now and curious about the Pros/Cons of using MOOS IVP over ROS or ROS2. I can't find a lot of information about active projects using MOOS so I'm wondering if it's worth learning.
Some of my project applications:
A network of static bottles that periodically measure water qualit... |
I'm used to use this kind of main function:
try:
rclpy.spin(rc_node)
except KeyboardInterrupt:
rc_node.get_logger().info('[RC_NODE] Received Keyboard Interrupt (^C). Shutting down.')
# rc_node.shutdown()
# Destroy the node explicitly
# (optional - otherwise it will be done automatic... |
I am using Ubuntu 22.04.4 LTS and ROS2 Humble. I am trying to build Moveit for some robotic applications but I could not do colcon build the tutorials. I tried to do the Moveit tutorials. I got some errors while building. How can I fix them? What should I do? Has anyone solved this problem before? Here are the errors:
... |
when i run this qrie@qrie-HP-Laptop-15-rb0xx:~/dev_ws$ ros2 run cv_basics img_publisher
i get this error ModuleNotFoundError: No module named 'rclpy._rclpy_pybind11'
The C extension '/opt/ros/humble/lib/python3.10/site-packages/_rclpy_pybind11.cpython-311-x86_64-linux-gnu.so' isn't present on the system. Please refer t... |
I am using Ubuntu 22.04.4 LTS and ROS2 Humble. I am trying to build Moveit for some robotic applications but I could not do Build and Run. https://moveit.picknik.ai/main/doc/tutorials/your_first_project/your_first_project.html#id1
When I use this command: ros2 launch moveit2_tutorials demo.launch.py Rviz opens empty wi... |
What other form factors of BLDC motors are there which I should consider? I need to try to stay as compact as possible in at least one axis (like is accomplished by a pancake motor). I specifically need a 1Nm nominal torque, 12V (or so), pancake style (or similar) BLDC motor.
|
This is my first post in this forum. I am new in the field and currently working on a project. My goal is to have two turtlebot3 in a gazebo world and allow them to create their own map using slam toolbox, separately.
After an attempt of writing a single launch file to spawn two tb3, I ran into a problem where my tf t... |
enter image description here
HI,
I am currently build an AMR in which i am facing some errors in the navigation that is my local and global coast map is not proper shown and aligned in the rviz,it would be a great help if anyone can help me with it.i mentioned the necessary details below
coastmap_common_params.yaml
o... |
I am currently involved in compiling msg, srv, and action use cases using the ROS2 Humble distribution. In my use case, I would like to generate the interface/header files using .idl files instead of using .msg, .srv, and .action files. Additionally, my use case also includes having enums and using them inside a struc... |
I'm currently working on a project involving palletizing boxes using a Universal Robot controlled by a ROS system. The palletizing process involves picking up boxes from a conveyor belt and placing them onto a pallet. However, I've encountered an issue with potential collisions between the gripper, robot arm, and exist... |
I am using ROS Noetic on Ubuntu 20.04 (VM image on arm64) and currently have an issue with Gazebo 11.11.0.
When I update via apt, I get the message that Gazebo is at newest version.
But there seems to be a release 11.14.
https://github.com/gazebosim/gazebo-classic/releases/tag/gazebo11_11.14.0
Is it possible to update ... |
I want to simulate a force torque sensor located at the tip of robot arm. Does anyone have a working example or a tutorial for ROS Noetic?
|
I'm trying to install the realsense2-camera package for ROS Melodic, but I get this error message. I'm using Ubuntu 18.04 .
Could anyone help me?
sudo apt-get install ros-melodic-realsense2-camera
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate pack... |
I'm trying to set up a Velocity Controller for my Drone Propellers. When i start the controller.launch the JointStateBroadcaster configures correctly while the Rotor_controller fails. Terminal says that no joint parameter is set for the rotor_Controller. I only declared one propeller to keep it a little bit cleaner.
Te... |
In Moveit, How can I specify additional limits on joints as constraint. For example joint1-joint2 between 20deg to 90 deg.
I want Moveit to plan trajectory to respect these limits.
These limits is for robot with four bar linkage, which is modelled as open chain and now I want to enforce the limits.
|
When Arduino simply provides a target value according to a command,
Is this the same as a controller? Or is it called controller manager?
If I configure Arduino as a node and deliver a message,
What is the controller here?
|
If I have a 2 axis gimbal (pitch and yaw) and I want to set the camera to a specific inertial orientation (in the world frame), how can I do this? How do I know what to set each motor to achieve this?
I'm having trouble finding resources, so any guidance would be greatly appreciated.
|
It's my first question here, so if I'm posting the question in the wrong place please notify to me.
The question came to my mind while I was performing some experiments using turtlebot3. My goal was to launch the turtlebot nav2 simulation using tb3_simulation from nav2_bringup as described in https://navigation.ros.org... |
I am trying to run a multi-agent robot swarm using physical TurtleBot3's, with ROS2 Humble. I'd like to use Nav2 and SLAM Toolbox to navigate and map an area. I'm also interested in map merging, so I've been basing my work off of this repo. I've been able to run a multi-robot simulation with no problems. Now that I'm t... |
I am trying to run navigation with slam on a custom world. I am using the standard nav2fn planner. I first tried running it on my own urdf robot model. That didn't work so I tried using the turtle bot tutorial and I am getting the same error.
I am running :
ros2 launch nav2_bringup tb3_simulation_launch.py headless:=Fa... |
I'm relatively new to ROS and am struggling with a problem I'm hoping someone can help with.
I'm running ROS Noetic on a PI4 with Ubuntu.
The issue is that move_base seems to keep crashing every time I set a 2D nav goal in RVIZ. Prior to that it works fine with the amcl localization etc and 2D initial pose setting in R... |
I'm using ubuntu 22.04 ros2 humble
I want to compare the ability of local planners in nav2, so don't want to use global planner such as a*, theta* or else
The thing i want to do is only creating straight line from robot's initial position to goal position and robot will dodge obstacles using only local planner
But I ha... |
This question is almost similar to the other one which has the same issue of _launch.py was not found in the share package. What differs is i created the package using ament_cmake. So i created a urdf file for the robot and launch file attached below
from launch import LaunchDescription
from launch_ros.actions import N... |
I have differential drive robot with Roboteq controller. After successfully created the map with slam_toolbox and localise the robot I tried to use the Nav2 to navigate the robot. Im using ROS2 humble. The controller try to navigate the robot to the goal pose but is stuck.
Here the launch file for mapping and localisa... |
In my ROS Noetic project of a vehicle with a camera and odometer, I'm planning to compare the vehicle's position from the odometer with the desired angle or direction detected by the camera. However, when establishing the control error, I noticed that the values from the odometer are in a different reference frame than... |
I am building an inverted pendulum robot. After analyzing what others have created I came to the conclusion that my code is way too slow. I am looking for suggestions to improve the code I wrote. I have some speculations regarding as to which direction to head in. I am using an Arduino Nano Esp32 with A4998 and Nema 17... |
I've made a gazebo envirnment and successfully visualized the cam image with rviz. However I wanted to do some post process to make it simulate the result of image segmentation and send it back to rviz. Is there any similiar methods or tutorials for this? Maybe a way to import the node to python?
|
I am trying to use a system that integrates one IMU and one Magnetometer for an outdoors vehicle, but I am struggling to fully understand some of the conventions used by ROS. I would like for this to be a sanity check to make sure that the assumptions I have are correct and to, hopefully, help any future users.
As far ... |
I'm trying to change Nav2's current planning and control pipeline from:
A* global planner at 1 Hz -> DWB controller at 10 Hz
To the following:
A* global planner at 1 Hz -> A* "local" planner at 10 Hz -> DWB controller at 10 Hz
Where the higher rate "local" planner uses the same A* algorithm as the global planner, but i... |
party developed node that uses an argument on startup (and no parameters). I have a launch file that loads an YAML and uses it to feed the parameters to several nodes being launched. One of the configurations in that YAML file is the argument I need to pass to that 3rd-party node.
Currently, what I do, is to use an opa... |
I am trying to implement a costmap layer which would allow a robot to assign higher costs to unfavorable terrain, like patches of grass. So, the robot is still able to pass over the grass if that is what the best path involves, but it will usually try to stay off the grass if it can.
Is there any code which already imp... |
I am struggling with an example integration test for a ROS node (in Python). I have a node that somehow processes input data and outputs some messages based on this:
#!/usr/bin/env python3
import rospy
from image_utils import ImageUtils
from sensor_msgs.msg import Image
from std_msgs.msg import String
class Template... |
I am trying to simulate a tether attached to my robot in gazebo. I am describing the robot and the tether using urdf xacro files. My tether is modeled as a chain of links generated using a recursive macro connected by revolute joints. It is imported in the urdf file for my robot (named robot.) My next step is to connec... |
You have three choices it seems for optimization when running bundle adjustment.
Euler Angles
Quaternions
Axis-Angle
What is the normal paramertization to use? Quaternions need to be normalized if they are used either as part of the cost function or at a minimum normalized after each update even if the jacobian doesn... |
I have simulated the robot with libgazebo_ros_diff_drive.so plugin. I have written python script to move robot to goal location. But When I am running this go_to_goal.py, the robot is moving in straight direction only (not taking any angular velocity to reach goal). It is not moving towards the goal.
I have attached my... |
What is difference between libgazebo_ros2_control.so and libgazebo_ros_diff_drive.so plugin?
How this two plugins are used to control the robot?
|
Good day everyone,
I've been struggling with this for two days now. and I can't seem to find a solution.
I have a dictionary with topic names and their types, what is the correct module to read the message using rcl?
while reader.has_next():
topic, message, timestamp = reader.read_next()
if topic in topic_names... |
I get the following error when trying to build my python package with Colcon build
[0.235s] ERROR:colcon.colcon_core.package_augmentation:Exception in package augmentation extension 'python':
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/colcon_core/package_augmentation/__init__.py", lin... |
I keep getting this error when trying to build ikfast plugin for moveit2, any ideas why?
ammar@ammarpc:~/WSG_Panzer_ROS/ros2_ws$ colcon build --packages-select panzerbot_ikfast_pkg
[1.096s] ERROR:colcon.colcon_core.package_augmentation:Exception in package augmentation extension 'python':
Traceback (most recent c... |
On 3/6/2024 I noticed that the Rsrc Jenkins pipeline for my package failed, even though I haven't changed the package since October.
https://build.ros2.org/job/Rsrc_uJ__catch_ros2__ubuntu_jammy__source/3/console
After investigating, I found the culprit to be a failure to pull down a specific tag from the release reposi... |
I have a simple 2DOF planar robot with this configuration:
L1 and L2 are the lengths of my 2 arms. L1 is 245.5mm and L2 is 160mm.
Alpha is the first angle (the one of the base) and beta is the second angle attached to the first arm.
When I programmed an Arduino and tried my math, I just got inconsistent results. The p... |
I have been watching Russ Tedrake's videos on robotics, which are wonderful. But I am confused by one thing.
So he talks about the application of LQR control and its ability to efficiently stabilize the dynamics of a robot around some operating point or fixed point. My question is, how well does this LQR idea extend to... |
I am trying to use 4 sonar sensors (front, back, left, right) in gazebo simulation along with LIDAR for navigation using NAV2.
I have included the sonar gazebo plugins as below
<gazebo reference="sonar_front">
<sensor name="sonar_front" type="ray">
<always_on>true</always_on>
<visualize>true</visu... |
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