Questions tagged [velodyne]

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Unable to Receive Data on /velodyne_points Topic in ROS2 Humble

Description: I am encountering an issue where I am unable to receive any data on the /velodyne_points topic in ROS2 Humble. Here are the details of my setup: Operating System: Ubuntu 22.04 ROS2 ...
Dragon's user avatar
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ROS/ROS2 mapping and path following with skid-steering robot and Velodyne 3D laser

I built a skid-steering robot and I would like to implement a path-following application. I would like to use the Velodyne to create the map and then specify a path on it to be followed by the robot. ...
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104 views

Integrating Velodyne HDL-64E S2 Lidar with ROS2 - Driver does not seem to support it

I have a problem that I have been working on for many weeks now: I want to get a Velodyne HDL-64E S2 Lidar running in ROS2. Background: I am using ROS2 Humble under Ubuntu 22.04 and have connected the ...
Henne Leuchte's user avatar
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126 views

Not getting point cloud data from Velodyne VLP-16

I have a raspberry PI 4B running Ubuntu 18.04 with Melodic installed. I tried to follow the official Velodyne tutorial to use VLP-16. I can see the User Interface through the browser. I want to do the ...
Gergely Halász's user avatar
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1 answer
71 views

What is the origin of the "time" field in the Velodyne ROS 2 driver?

When point field data is published by the ROS 2 Velodyne LIDAR, it includes a "time" field. I am trying to find out how this field is calculated. Is it: ...
Ani's user avatar
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1 answer
30 views

Rviz Message filter dropping message with rosbag1

I have a bunch of rosbag1 bag files with images, velodyne point clouds, and radar point clouds. I've now attempted a couple different methods of playing rosbag1 files in rosbag2, such as ...
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1 answer
14 views

3D mapping Cliff Detection

Hi, I am using rtabmap in my project with Velodyne VLP-16 sensor so that the ground can be identified by the slam algorithm. As mention here that if I want to detect the cliff robustly, then it ...
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2 answers
53 views

LaserScan rotates when moving

I'm new to ROS, and picked up a robot that used to be able to perform SLAM with gmapping. I'm working on getting it up and running after years of sitting in a lab, but I can't get the robot to map or ...
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1 answer
25 views

Catkin_make Error in ros-drivers / velodyne

OS and Version: Ubuntu 18.04 ROS Version: melodic Hello guys, I tried to install velodyne package following these steps http://wiki.ros.org/velodyne/Tutorials/Getting%20Started%20with%20the%...
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5 views

Publishing the data from BAG file

I am trying to learn ROS and filtering of point cloud. I performed some tutorials on the same. However now I am stuck that the data from node for bag file is not getting published. Please refer to the ...
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1 answer
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rviz not showing any data

I have installed ROS Melodic and the Velodyne Driver ros-melodic-velodyne. I haven't found a VLP-32C tutorial for the Velodyne Driver although what I see here http://wiki.ros.org/velodyne, says that ...
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8 views

velodyne HDL -64E S2 launch file configuration

Hello All, I am currently working with velodyne HDL -64E S2 model of LiDAR and am trying to get data using ROS package with modifying to the launch file configuration. ...
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1 answer
2 views

How to calculate the exact packet rate of HDL-64E S3D?

I'm using velodyne hdl-64e s3d with this driver (https://github.com/ros-drivers/velodyne), however, this driver only support up to S2. Can anyone tell me how to calculate the exact packet rate of HDL-...
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1 answer
4 views

Velodyne HDL32 FPS issue

Hi Pals, I've been using the latest velodyne package in order to receive data from the HDL-32E. I am using ubuntu 14.04.5 with a ROS indigo installation. The driver mostly works fine, getting the ...
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1 answer
3 views

Cmake error during building a rospackage

Hello all I am trying to learn how to use the ROS-PCL library with the Velodyne 64E lidar. I have stored my code in the same directory as that of the Velodyne_height_map project and I want to modify ...
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velodyne(HDL-32E) something shadow occured why it happened?

https://www.youtube.com/watch?v=HdJarMRYNJU our velodyne use driver -> https://github.com/ros-drivers/velodyne and i dont know why shadow occured what should i do? Originally posted by dnjsxor564 ...
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1 answer
4 views

Height Map xyz coordinates

Hello, I'm using velodyne height map , so far i am struggling to only view the x,y,z coordinates of obstacles. even once I try to edit on heightmap.cpp file nothing changing in output. what could be ...
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1 answer
7 views

Height Map output

Hello, Regarding Velodyne lidar obstacles detection. I am using the velodyne_height_map. I was seeking to be able to detect the distance between the sensor and the obstacle and the angle at which the ...
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1 answer
37 views

reading VelodyneScan from bagfile - offline

I am trying to read a bagfile containing multiple velodyne data. I want to do this preferably without rosbag play as sometimes from my prev experience due to computation issues it may skip reading ...
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1 answer
110 views

Convert pcap to bag file

Dear everyone, I got som trouble when trying to convert a *.pcap file into a *.bag file. I try the method explained here : https://answers.ros.org/question/213080/convert-raw-velodyne-vlp16-pcap-to-...
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1 answer
10 views

How can I get a Clearpath Jackal to receive HDL-32 data?

This may be more of a general networking question but because it's relevant to the ROS community I felt like this was the most appropriate place to discuss it. The Problem (TL;DR) I have a Velodyne ...
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1 answer
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How to use velodye-64 with velodyne driver

roslaunch velodyne_pointcloud 32e_points.launch calibration:=/home/user/32db.yaml how to revamp it Originally posted by lowme on ROS Answers with karma: 16 on 2017-06-19 Post score: 0
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1 answer
34 views

AMCL not localizing in pre-built map

I'm using AMCL with a Velodyne VLP-16. I'm using hector_slam to build the map, saving the map with map_server. I'm using an IMU and wheel encoder velocities (twist messages) to fuse with ...
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1 answer
9 views

How to align velodyne point clouds?

Hi, I have a Velodyne sensor on a robot and am trying to build a 2D map from the velodyne point clouds using octomap. I have odometry in the form of nav_msgs/Odometry messages from the /world to /...
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2 answers
59 views

How to connect VLP-16 (confused about the tutorial)

I try to connect VLP-16 to indigo in four ways, but all failed and led to the same result (no data was printed through command "rostopic echo /velodyne_points" and "rostopic echo /...
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2 answers
25 views

converting velodyne packets to pointcloud

Hii, I have velodyne packets and its config file . I want to convert it to point cloud in a C++ program. Can anyone provide me API to do this . Originally posted by shashank on ROS Answers with karma:...
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1 answer
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Difference in Reference Frames between VLP 16 and HDL 32 and How to convert them?

Hi, How are the Reference Frames used in VLP 16 and HDL 32 differ from each other and How to convert them into a common frame of reference ? I have point cloud data gathered from VLP 16 and HDL 32. ...
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1 answer
3 views

Error while compiling ros drivers for velodyne on ROS Indigo

System Config: Ubuntu 14.04 and ROS Indigo As mentioned here, http://answers.ros.org/question/226594/how-do-i-build-ros-vlp16-velodyne-driver-for-indigo-using-catkin/ I have followed those steps to ...
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1 answer
2 views

It is possible to use VLP-16-lite on ROS indigo & kinetic?

I'm planning to buy VLP-16 or VLP-16-lite. So I want to know that there is a driver for VLP-16 & VLP-16-lite on ROS. I found that I can get the driver for VLP-16 on indigo & kinetic from here. ...
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1 answer
18 views

how to save Vlp-16 results

Hi everyone I am new in Ros and Lidar. My project is finding humans in VLP-16 lidar output. To do that, I have a camera and vlp-16. I need to save images from camera and data from VLP-16. Then I will ...
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1 answer
30 views

RViz -- How to publish more than 1 point?

I have a point cloud in RViz and I want to publish all the points in my selection. When I select a subset of the point cloud, I can see in RViz that I have a collection of points selected. When I ...
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1 answer
21 views

Change [velodyne] frame for gmapping

I have .pcap file collected from VLP16 and I first run roslaunch velodyne_pointcloud VLP16_points.launch pcap:=/home/soowon/Documents/111.pcap I can now see in ...
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1 answer
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Convert the provided calibration data from the standard Velodyne XML format to the node's YAML format

I'm trying to hookup the VLP-16 using ROS and on the Ubuntu 16.04. Following your steps outlined in the Wiki I' am having problems at step 3. http://wiki.ros.org/velodyne/Tutorials/Getting%20Started%...
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1 answer
39 views

How to use "pointcloud_to_laserscan"?

I can view my velodyne point cloud in Rviz but I want to convert the 3-D data into 2-D laserscan. When I run ...
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0 votes
1 answer
2 views

Integrate velodyne and INS data

Hi, I am working on project where I need to combine LIDAR scans and INS data together. I am using velodyne 32e model that i want to mount on UAV so INS data is important for accuracy. I can collect ...
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1 answer
4 views

meet error when implementing "velodyne_driver" command for vlp-16

I tried to do as the answer to #q213080 says, but when I try the second command ...
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1 answer
10 views

E: Unable to locate package ros-VERSION-velodyne

Hello, I followed the instructions and installed ROS. When I try to do the step from Getting Started with the Velodyne HDL-32E "Install the Velodyne stack from the repositories by running ...
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1 answer
8 views

ray sensor not publishing points properly

I was trying to visualise velodyne hdl 32 in rviz and the point cloud created by this sensor in rviz, but the output point cloud is not coming realistic, as i've seen it should come like this but i ...
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1 answer
4 views

Unable to open VLP-16 Webserver & Cannot get Scan Data in rviz

I am working on Ubuntu 14.04 (NOT a virtual machine), and I am having trouble connection with my VLP-16. In Wireshark, I can see that data is being sent along eth0 (ethernet 0). I have configured the ...
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1 answer
3 views

Is there a way to prevent the VLP-16 from disconnecting after it starts delivering information?

When I connect the VLP-16, the connection works fine, but after a few minutes Ubuntu indicates that the connection has been disconnected. These are the commands I input into the terminal to get a data ...
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1 answer
10 views

3D velodyne pointcloud to occuppancy grid

Hi, I intend to use this package http://wiki.ros.org/amcl or one similir to initially localize my self in a prebuilt map. I wnat to convert my 3D map to an occupancy grid, I know how to convert it to ...
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1 answer
93 views

VLP16 - ROS Indigo- Velodyne poll() timeout Issue

Hi folks, I am pretty new with ROS and looking for some guidance. I got this error every time I tried to start the ROS. ...
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2 answers
16 views

pointCloud2 to pcl::pointcloud conversion

I am using velodyne VLP16. The information I am getting from it is "unordered" pointCloud2. I am having a trouble to translate it to pcl::pointcloud. According to the code provided online [...
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1 answer
9 views

Asscess point cloud from Velodyne VLP16

Hi, I need the pointcloud from Velodyne VLP16. The author of velodyne drive mentioned that "velodyne_pointcloud publishes its data using a custom PCL point definition: velodyne_pointcloud::...
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1 answer
13 views

How to use two VLP16 with just one computer at a same time

Hey, I have two VPL16 velodyne laser scanners and I connected using a switch to my computer. I fixed first VPL 16's IP to 192.168.1.201 and second VPL's IP to 192.168.1.202 using Web GUI and then I ...
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1 answer
163 views

Proper way to transform a point cloud

Hello, I am using V-REP to simulate a vehicle with a Velodyne. To simulate the behavior of the real Velodyne, I transform at each simulation pass the captured points to the /odom frame. This is to ...
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1 answer
46 views

How to convert .pcap to .las file

Hello, I am a complete freshman on Linux, ROS and velodyne so, Please help me with this. I want to process the velodyne data to create an point cloud. As velodyne give output in .pcap file want to ...
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2 answers
71 views

Having problems with velodyne VLP-16 and ros

Hi, I'm new to ROS and Linux so my question may be very stupid. Sorry for that. I want to connect VLP-16 and laptop (in fact i need to connect it with raspberry pi, but i first wanna try it on laptop)....
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1 answer
2 views

but_velodyne with VLP16

The but_velodyne wiki states that the package has been tested only with Velodyne HDL-32E. I am wondering if anyone has tried using the package with VLP16 or is aware of a reason why it would not work ...
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1 answer
11 views

how to use concatenatePointCloud

I am publishing /tf with a tf_broadcaster node. Also I am publishing <velodyne_msgs/VelodyneScan> with velodyne_driver node. Then the velodyne_pointcloud Transform nodelet is suscribed to both ...
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