Bot keeps collapsing

[Bhavya sharma]

After I run the command-
roslaunch champ_config gazebo.launch

Gazebo opens and the simulated bot collapses to the ground, I don't want to switch off gravity, what should I do?

[Juan Miguel Jimeno]

@bs2603 are you using your own .world file?

[Bhavya sharma]

Nope,
here are the steps I am following-

• Open a terminal and the catkin workspace
• source the devel/setup.bash file
• Run the base driver using roslaunch champ_config bringup.launch rviz:=true
• Run the gazebo world using roslaunch champ_config gazebo.launch

I am using ROS melodic on ubuntu 18.04.

[Juan Miguel Jimeno]

can you post a gif or a video?

[Aniruddha7]

I used to have similar issues but once you immediately terminate Gazebo and relaunch RVIZ and Gazebo, the issue got fixed. Sometimes it also happens due to RAM/PC constraints. Make sure no background process is running behind the application.

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On Tue, Jan 26, 2021 at 7:04 PM Bhavya sharma ***@***.***> wrote: After I run the command- roslaunch champ_config gazebo.launch Gazebo opens and the simulated bot collapses to the ground, I don't want to switch off gravity, what should I do? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#27 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AEXC5ZJGIP564R6MRTOLLCDS33AGDANCNFSM4WTOSXMA> .

[Bhavya sharma]

I was able to resolve the issue,
This was the error-

Could not load controller 'joint_group_position_controller' because controller type 'effort_controllers/JointTrajectoryController' does not exist.

I installed the controllers using -
sudo apt-get install ros-melodic-ros-control ros-melodic-ros-controllers

these controllers are not a part of the default melodic full desktop installation,thus need to be added separately.
Thanks for the help!