Odom Axes not in line with base_link
Hi, I am using Powerbot to be able to build a map using gmapping algorithm. To setup my robot, I am using the ROSARIA package to be able to have control on the motors, get pose estimates from odometry...
View Articletransform base_link to base_laser,map,odom
I know the meaning of transform base_link to base_laser. But what is the meaning of transform base_link to map? What is the meaning of transform base_link to odom? Because I need the meaning to set the...
View ArticleRobot model in rviz is not following base link
Hi, I am using Gazebo with a simulated model with GPS, IMU and Odometry from the diff drive including the navsat and the ukf node, the estimation is not correct yet, but I wonder about something else:...
View ArticleBase_link frame is not connected to odom frame
hello, I'm using Ubuntu 14.04 and ROS Indigo I used the following block of code to publish the transformation of base_link frame and odom frame: geometry_msgs::TransformStamped odom_trans;...
View Articleurdf in rviz is too deep
Hi, I setup my robot system and its working good. I am using hector mapping with urdf and a laserscanner and I am getting the following result:  I...
View Articlerobot_base_frame parameter in move_base/amcl
Hi all, I have a mobile robot with IMU, wheel encoders and hokuyo laser. I am following [this](http://answers.ros.org/question/11682/robot_pose_ekf-with-an-external-sensor/) to set up the...
View ArticleCalibrating Laser Scanner Transform
Hey, I work with a robot that is equipped with a 2D Laser Scanner. And actually its pretty hard to measure the distance from the center of the rorbot to the center of the Laser Scanner accurately by...
View Articlehector slam problem
I want to create a map only with my Laserscanner SICK TIM551. So I started my laserscanner and hector slam with roslaunch hector_mapping sick_mapping.launch I noticed this warning lookupTransform...
View ArticleNeed help with hector slam tf
Hi all. I have successful set up my Hokuyo UST-20LX to do laser scanning. I'm currently trying to use the hector_slam package now. However, I have problems regarding the tf. Using rosrun tf...
View Articlespecifying base_link frame for the Transformation tree
Hi all, The base_link frame of my robot is 16 cm above the ground (or base_footprint frame) and laser frame is 8 cm above the base_link frame and I have specified all the transformations with respect...
View Articleoffset between base_link and base_footprint
hello friends. I am using laser_scan_matcher and robot_pose_ekf. everything is good. But there is a offset always between base_link and base_footprint in rviz display. you think is that normal or is...
View Articledoubt regarding cmd_vel published by move_base
Hi all, **(See Update 2)*** I am using [move_base](http://wiki.ros.org/move_base?distro=jade) and everything seems to be working fine except sometimes, `move_base` publishes erratic velocities on...
View ArticleWaiting on transform from base_link to map to become available before running...
Hi, I doing a project of using kinect and ros for obstacle avoidance. I am new to ros, so glad if anyone could explain to me in details. Here is my launch file to bring up all the sensors, as well as...
View ArticleConnect two Youbots with a wire in gazebo
I'm simulating a wire using multiple joints linked together. The two youbots have its own separate urdf file. SO I was able to link 10 joints to the front of one Youbot, but I cannot link the last...
View ArticleTf origin is away from the base_link
I have built my differential drive mobile robot in solidworks and converted that to URDF file using soliworks2urdf convertor. I successfully launched and robot and simulated with tele-operation node....
View ArticleError in amcl node while configuring navigation stack simulation
I have configured the navigation stack to a mobile robot model. When i tried to launch the below file got a following error. I am sure the error is with amcl node because i checked other nodes, launch...
View ArticleMoving laser frame causing problem
I am using lidar lite v2 with gmapping. The lidar is rotated using a motor. To incorporate moving lidar, I have applied transform from lidar frame i.e base_laser to base_link is using a variable angle...
View Articlemore than one odom->base_link transform
Hi, I have 2 nodes from third parts, both of them publish odom->base_link transform. I want to combine these 2 transforms and publish my own odom->base_link transform, since our navigation node...
View ArticleConfused about coordinate frames. Can someone please explain?
I've read: - http://wiki.ros.org/navigation/Tutorials/RobotSetup/Odom - http://www.ros.org/reps/rep-0105.html - http://ros.org/wiki/tf - http://wiki.ros.org/tf/Design However I'm still quite confused...
View Articleerror while building 2d map
hi i am trying to build 2d map i go just part of the map and git in the axis error that say in rviz: Transform For frame [base_link]: No transform to fixed frame [map]. TF error: [Could not find a...
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