Questions tagged [avoid-obstacle]

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Make the robot stop if it finds an obstacle in front

I am using the navigation stack (nav2) without problems, but I would like to understand how I can make the robot stop from its path if it finds a dynamic obstacle in front of it (at a minimum distance ...
Supermax182's user avatar
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Obtaining different results with the same parameters

There's something weird about the algorithm I use in my robot: In the planner algorithm I use, I can send my robot to a point on an existing map and bring it to the starting point from that point. And ...
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Challenges with Local Planner in ROS2 Navigation2: Ineffectual Obstacle Avoidance and Potential Self-Detection

I'm currently facing challenges with the local planner in ROS2's Navigation stack, which is ineffectively distorting the global plan to avoid obstacles as displayed in these videos: GPS ok But Local ...
Marcus Vinicius's user avatar
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RegulatedPurePursuitController detected a collision ahead but robot doesn't stop

Hello, We are trying to navigate with obstacle avoidance with ROS2 Foxy and we switch from DWB to the freshly released Pure Pursuit Controller in the Navigation2 stack. We set a goal in Rviz several ...
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Nav2 - global_planner does not avoid obstacles

Hi, I am tunning nav2 parameters for a rectangular robot, when I send a goal that requires obstacle avoidance the planner does not avoid the obstacle, here is my param file and screenshot. Thanks for ...
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How to avoid obstacles in op_planner

I have also this problem that seems the vehicle doesn't detect any obstacle. I am using ubuntu 1.18 ros melodic and Autoware 1.14 (I am also using LGSVL as simulator) @cwhong yes I am using lidar for ...
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How to implement avoid obstacle with open_planner in Autoware?

Hi, I used Autoware 1.12.0 in Ubuntu 16.04 I want to avoid obstacle with open planner. Now, I used these below nodes. lidar_euclidean_cluster_detect lidar_kf_contour_track op_global_planner ...
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Navigation Stack Error - TF Exception that should never happen for sensor fram

Hi I make a autonomous differential robot. In kinetic devel navigation stack works fine. Robot can get position, goes goal, escape obstacle....However i upgrade my linux and ros base to melodic devel. ...
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A mobile robot only moves horizontally and vertically, navigation avoid obstacle problem

Hi all, I am simulating a mobile robot that only moves horizontal and vertical, like: It's length is 7 meters, width is 2.5 meters, and LiDAR is on middle of the robot, the green arrow is the ...
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ObstacleLayer and VoxelLayer don't generate obstacles

Hello everyone. I have the issue as i said in the title that ObstacleLayer and VoxelLayer don't generate obstacle. I am using a Realsense camera, model D435 to generate a pointcloud and then using the ...
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range_sensor_layer doesn't show obstacles on rviz map?

Hi. I'm working a robot navigation using a lidar and 5 ultrasound sensors. using range_sensor_layer I couldn't get the robot to avoid obstacles within its range dont know if it's from the common ...
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DWB_local_planner - Distance between the robot and the obstacle

Dear all, I use the DWB_local_planner and the robot gets very close to the obstacle while avoiding it. I'm interested to configure the DWB_local_planner in order that the robot ALWAYS keep a certain ...
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Custom Global Planner Plugin with Obstacle Avoidance Problems

Hello, UPDATE: July 5th I have simplified the predefined path to just a straight line instead of a circle as seen in my original question (see below). I have placed an obstacle in front of the husky ...
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How to receive Octree?

Hello, I am currently creating an Octomap through the Octomap Server. What I want to do next is to receive the octree for detecting obstacles while the octomap is being created. I've tried this: ...
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Obstacle Avoidance

Hi, Im wroking on a Robot that do the mapping, I'm using UltraSonic Sensors, IMU and Hall Sensors From the BLDC Motor, Arduino Mega 2560 and ROS Kinetic. The next step is the obstacle avoidance. So ...
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2 answers
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Difference between DWA local_planner and TEB local_planner

Hi there, I'm new in ROS nav_stack. Currently, I'm working on navigation of a mobile robot (vehicular robot) and I am searching the "best" local planner for our application. Currently, we ...
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Obstacle avoidance in move_base package

I am using DWAPlannerRos and GlobalPlanner for move_base navigation package. It is able to navigate to goal. I have set the inflation radius of obstacle layer and inflation layer of costmap to be 1.0. ...
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Known map with undectable obstacles (navigation stack)

Hi there, I'm struggling to find how to use existing ROS navigation packages with my robot. Here's the setup: I have a known map and an RPLidar on my robot, but this lidar is only able to detect some ...
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Is it normal behavior for local planners to ignore static obstacles if no pointcloud or laserscan data is being published?

I have tried the following local planners: base_local_planner dwa local planner teb_local_planner and all of them are ignoring obstacles on a static map, The global planners on the other hand never ...
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Interrupt navigation stack and spin once

Hi, I want a node which on receiving a goal from the navigation stack makes a turn continue's to the goal and after like 10 seconds spins again etc. How am i going to implement this? I know i need to ...
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[tf]different laser position for obstacle avoidance

Hi all, Currently I am following this tutorial to implement the wall following algorithm, During the wall following stage, I need to do the obstacle avoidence. When the laser position is puttedd on ...
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My turtlebot cannot avoid obstacles with Xbox One Kinect

I use Turtlebot(Kobuki) and Xbox One Kinect(Kinect v2) on Ubuntu16.04 and ROS Kinetic. I succeeded to SLAM and AMCL with turtlebot_navigation package. On the other hand, when turtlebot moved ...
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How to get the distance in meter from PointCloud Data?

Hello, I am pretty new with ROS and Robotino. I am using ROS-Indigo, Ubuntu 14.4 and Robotino by Festo. I am subscribing the ros topic /distance_sensor : ...
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how to find distance and angle b/w each points in a point cloud and the Kinect sensor

Question : how to find distance and angle b/w each points in a point cloud and the Kinect sensor? Details : Using the code provided in ROS PCL tutorial I subscribed to sensor message and generated a ...
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Moving Obstacle

I want to test my local planner for moving obstacles. How can I simulate moving obstacles to test the code ? Originally posted by mayank_m on ROS Answers with karma: 115 on 2016-04-23 Post score: 1 ...
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navigation using kinect without laser scan

Hello, I'm new for ROS. And nowadays, I'm thinking about how to let my robot avoid obstacles and navigation only use a Kinect. I find a video in https://www.youtube.com/watch?v=NmnepqAQIlk I wonder if ...
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