Converting sonar ranges to laserscan message
Hi, In my project i should do mapping and localization using only ultrasonic sensor and IMU. Most of mapping packages in ros use [laserscan...
View ArticleTurtlebot's position doesn't make sense on gmapping
Hi everyone, I have turtlebot2 and I am using the gampping package to implement SLAM. When I remote turtlebot to use kinect to scan the environment, I watch the RVIZ to check the map result. But even...
View Articlerviz : warning message no map received
Hi I'm trying to visualize a map using 3 ultrasonic sensor and arduino mega 2560. I developed my own node to generate LaserScan from 3 sonar range. Algorithm using for mapping is...
View Articlehow to build /tf topic frame tree for hector_slam or gmapping
I'm new to ROS, and I'm trying to apply the process given in the "[How to build a Map Using Logged Data](http://wiki.ros.org/hector_slam/Tutorials/MappingUsingLoggedData)" (of `hector_slam`, but...
View ArticleNavigation Doesn't work
I am trying to follow a simple tutorial of building 2d map, but encountered some problems. In RVIZ, the indicator of my robot seems flying around and the navigation target doesn't work. The robot just...
View ArticleHow to use ORB_SLAM with ROS Navigation Stack?
I am currently working on a mobile robot project, in which I want to implement ROS Navigation to be able to set goal pose and avoid obstacles. The main problem is, that I don't have a Kinect or a laser...
View Articlerobot_localization and gmapping - gps has offset
Trying to use robot_localization with gps to improve the accuracy. Currently, gmapping is responsible for map->odom transform. So, I have tried the following configuration. We use base_footprint...
View ArticleGmapping launch error
Hi everyone, I am new to ROS and have been learning from the book "Mastering ROS for Robotics Programming". I have run into an issue in Chapter 4 where a simulated diff wheeled robot uses gmapping to...
View Articlehow to use 2 laserscanners in order to perform more efficient Gmapping
Hello everyone, I am trying to merge the laserscans of two Hokyuo laserscanners in order to perform more efficient Gmapping. I am using ROS Kinetic and catkin. Since all packages like map_merger or the...
View ArticleImported map resizes and flickers in RViz
Hello, I run Ridgeback robot on RVIZ with nagivation stack. Everything worked fine, I have the robot model in RVIZ and I was able to navigate around and created a map. The problem happened when I tried...
View ArticleHow to make better maps using gmapping?
I'm rather new to ROS and using ROS with SLAM for the first time. I'm using a Hokuyo LIDAR and the [gmapping](http://wiki.ros.org/gmapping?distro=kinetic) package. My maps don't look very good....
View Articlerobot_localization and gmapping - how the transform shuold be done?
We are trying to use `robot_localization` and `gmapping`. What we have done so far: we use gmapping to publish the transform between `map` -> `odom`. Then we tried to apply gps, imu and odom using...
View ArticleDoes the resolution of the laser scanner range should match the one in gmapping?
Hello, Does the resolution of the laser scanner range should match the one in gmapping? or can it be different? and what are the consequences if they are different or equal? Best,
View ArticleSlam mapping with Rviz, realsense and a turtlebot
Lately, I started a hobby project of my own. This involves 2d SLAM gmapping using a realsense 3d camera, a kobuki base (turtlebot) and Rviz for subsequent visualisation. I'm starting it up by the...
View Articletf tree details
After running gmapping from intel.bag, while generating the map, if I run rosrun tf view_frames, it gives me the frames.pdf. In this case, the transform is map->odom->base_link and...
View ArticleMap not received when using nav2d with gazebo
I'm trying to use nav2d to autonomously map out an environment in gazebo but I am unable to get the gmapping nav2d node "mapper" to publish a /map msg. First I launch the...
View ArticleUpdate "old positions" when gmapping updates its map
Hi everybody, I want to generate a map which also contains the positions of some found objects. In a first step I want to store the positions where the robot took an image. This is quiet...
View ArticleGmapping creates an overlapping map
I'm trying to build a 2D map using Velodyne VLP-16, I have the csm, ICP scan matcher working but when I try to build a map using gmapping, it creates a overlapping map, I'm using the...
View ArticleROS,Tiago gmapping many erros & warnings
Hi all, I start to work with Tiago and my first task is autonomous navigation. But I got many warnings and error by following the Tiago-Tutorials in Wiki-Ros. My workstation is running with ROS-Indigo....
View ArticleWhy my own bag generated by rosbag can not be used for build map
Initially, I use basic_localization_stage.bag, which can generate map, but when I use my own bag(mylaser.bag), it doesn't work anymore. Here is my step: 1. `roslaunch roslaunch sick_tim...
View Article