ekf_localization_node : Filterd odometry yaw depend on IMU too much and Laser...
I have a `odometry/filtered` fuse by wheel odometry `odom` and IMU `imu_data` with ekf_localization. I let my robot facing a wall and do some test with the `odometry/filtered`. I have two problem...
View ArticleLimit the range scan on the TurtleBot3
Hello, I am a beginner in ROS and I am doing a project with the Burger version of Turtlebot3. Turtlebot3’s LDS default is set to 360 but I want to modify to 24. I know how to make this in the gazebo...
View ArticleLaserscan to PointCloud
Hello folks I need to convert the Laserscanner data from my Hokuyo Laser Range Finder into a PointCloud. I know there is a package called laser_assembler which should do this. But i can't manage to...
View ArticleCartographer_ros 3D Slam (localization) with horizontal lidar and IMU
I am trying to adapt the bagpack_3d tutorial of cartographer ROS to a sick laser scanner with an imu. The scanner and imu are working. However with the current setup, I do not get any localization/map...
View ArticleI am new to ROS and working on a project using 2 VLP-16 LIDAR sensors. How...
I am using ROS Kinetic on Ubuntu 16.04.5. Can you please provide detailed description for the solution.
View Articlewhich sensor will give out the MultiEchoLaserScan sensor msgs? Which brand...
The backpack demo_2d cartographer uses MultiEchoLaserScan Message for Lidar data. I wanna know that which sensor is giving out this kind of data? I want to have this configuration for large area...
View Articlelaserscan not showing up correctly in rviz
I an running ros on 2 raspberry pi's. one pi runs master, mapserver, gmapping or amcl and my motor control and sensor node. on the other I an running Rviz. I am in my motor control and sensor node I...
View ArticleCannot find python library/module to convert ROS LaserScan data into ROS...
HI, I am developing a ROS-SLAM based robot using RPi, Ubuntu Mate and ROS Kinetic. I am programming using Python 2.7 as I wish to avail both ros/rospy and native Pi GPIO functionalities. I am using a...
View ArticleI'm trying to build a package using catkin build,i even get notification that...
[build] No packages were found in the source space '/home/atharva/catkin_ws/src/laserscan_kinect/src' [build] No packages to be built. [build] Package table is up to date. [build] Summary: All 0...
View ArticleWhy cannot launch node of type [laser_geometry/laser_geometry]
I need to transfer from `sensor_msgs::LaserScan` to `sensor_msgs::PointCloud2`. I found laser_geometry package, (http://wiki.ros.org/laser_geometry). Because there is no ROS API, I found a link which...
View ArticleWhat does baud rate in SICK LMS do and how does it affect the frequency of...
In SICK LMS range finder, what does baud rate do and how does it affect sampling rate, frequency of messages being published on /scan topic? Let the detection angle be θ. Anglular resolution be α....
View Articleodom dropped 100% of messages
Hello! I am attempting to run slam gmapping with namespaces with my turtlebot3 on ubuntu16.02. I have read through other questions and have found that my tf tree was not fully connected. I got around...
View Articlemessage_filters for Array of topic
Hi there! I am wondering if anyone have ever tried to create a vectorised version of the example provided here [message_filters](http://wiki.ros.org/message_filters) (7.3 ApproximateTime Policy). In...
View ArticleUse ira_laser_tools to fuse the rplidar A2 and Kinect laser scan,but the...
I have a rpidar A2 and a Kinect camera,i use the `ira_laser_tools` to fuse the laser scan from the rplidar and kinect ,then use the merge data to bulid a 2d grid map by gmapping.But when i used the...
View Articlesmall, cheap sensor to get a LaserScan message
Hi everyone, I'm trying to get a LaserScan message in order to use the navigation stack on a Erlecopter drone. I know there is several way to get a Laserscan message (for instance lidar, or by...
View Articlehector_slam simulation has impredictable result
Hi everyone ! I am quite new to ROS and I'm trying to simulate hector_slam witout odom (only with laser scan). So I have this launch file: After launching, I replay this bagfile...
View Articlerviz couldn't display laserscan data correctly
I use gazebo as my simulation tool to generate data, and rviz to visualize the data, as I put camera or pointcloud into rviz it works well, but when it comes to laserscan it dosen't. I try to look...
View ArticleExplaination on sensor_msgs/LaserScan and time
Hi everyone ! I am currently working on LaserScan messages and I don't quite understand how time related attributes should be filled. If I look at the documentation : Header header # timestamp in the...
View ArticleRviz receives LaserScan messages but doesn't display them
Hi there I made a dummy package that is publishing fake laser scan messages (following this code:...
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