ROS Nav2 No TF data error in Real Robot

[AshishVarma]

I am not able to move the robot using joystick/teleop

edit:
Tried restarting everything, but the same error exists.

[rodrigo55]

Hi Ashish, that is strange. Did this happen during the session you were able to succesfully navigate?

If this was a different session, then maybe the robot controllers had trouble starting and they got stuck restarting forever. I believe this is due to an old lidar sensor.

I will replace the lidar so please let me know if you run into a similar issue

[AshishVarma]

Yesterday it gave good TF Data but now today suddenly it stops working, i cant even move the robot with teleop and joystick.

[rodrigo55]

Then let me make those maintenance changes.

This is weird since there is another student using it right now with no problems, so hopefully this will help.

[AshishVarma]

Today i have checked thrice during my session i too felt weird.

[AshishVarma]

Can you let me know once you have finished your changes in Real Robot, so that i can Test one more time and ill book a session to present.

[AshishVarma]

now iam getting like this

and i cant able to move robot using teleop command and joystick and not able to visualize the pose and scan data in rviz.

edit:

when i open real robot in ROS2 basics Rosject, robot is moving but in ROS Nav2 its not moving and iam getting like this

[rodrigo55]

Hi @AshishVarma,

That is very strange that you can control the robot in one rosject and not in another. The connection is the same, so there should not be a difference.

As for the “No gamepad connected.” message, it does not affect anything. It’s just a message that appears if it detects no USB controller that the robot can be controlled with.

Let me check the robot with your rosject to see if I can spot any issues, because the robot is working well.

[AshishVarma]

I don’t know what’s the reason but now everything is working super fine.