Turtlebot4 Slam error "could not found transform from [] to map"

I am working on turtlebot4 and ros2 galactic. I facing issues in SLAM. Rviz first showed me "could not found transform from [] to map" then i changed the rviz config file then it displayed "could not found transfor from [] to base link" . The lidar.ranges data is also 0 and does not change even after putting obstacles infront of robot.

Asked by Usama-Arshad on 2022-08-03 12:23:09 UTC

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Answers

My guess is your Global Options: Fixed Frame was blank "[]" so rviz2 didn't know what reference to use.

The lidar range data being 0, can be a missmatched QoS. Often rviz2 comes up with QoS: Reliable, so the sensor node will reject the subscription.

Asked by RobotDreams on 2022-11-14 21:31:09 UTC