Error running gmapping

asked 2020-02-28 05:13:19 -0500

I've installed ROS melodic on Ubuntu 18.04.4 LTS and Im using turtlebro by voltbro. When i run "roslaunch turtlebro_navigation turtlebro_gmapping.launch" on turtlebro raspberry pi i get "ERROR: cannot launch node of type [rviz/rviz]: rviz ROS path [0]=/opt/ros/melodic/share/ros ROS path [1]=/opt/ros/melodic/share " Also i dont have topics in "by topic" like scan and map in rviz. If you need more info about PC sys and RaspberryPI sys Ill include. Help me, pls.

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Can you explain your setup in more detail? How are you running commands on the turtlebro robot? Do you use ssh? Do you have a monitor and keyboard connected to the pi?

Wilco Bonestroo gravatar image Wilco Bonestroo  ( 2020-02-29 06:13:50 -0500 )edit

You know, i found a mistake i made. I was running it on pi when i need to do it on PC(Im new in ROS). But now there's the new one. The rplidar node has already ran on the pi. So i just have to start this on PC but then i get this: RLException: Invalid <arg> tag: environment variable 'ROVER_MODEL' is not set.

Arg xml is <arg default="$(env ROVER_MODEL)" doc="model type [turtlebro, brover]" name="model"/> The traceback for the exception was written to the log file"

N1ngawolf gravatar image N1ngawolf  ( 2020-02-29 06:28:07 -0500 )edit

Also i dont have "/scan" topic in Rviz-Add-Bytopic. But on the turtlebro it exists and then i do "rostopic echo scan" it shows me a lot of numbers(360) which are info from rplidar, so it works but in the rviz not.

N1ngawolf gravatar image N1ngawolf  ( 2020-02-29 06:33:43 -0500 )edit

and yes, Im using ssh

N1ngawolf gravatar image N1ngawolf  ( 2020-02-29 06:35:54 -0500 )edit