SITL error: unconnected trees

[BRNKR]

Hey,

with actual PX4 master and mavros i am getting following error

ODOM: Ex: Could not find a connection between 'local_origin_ned' and 'fcu' because they are not part of the same tree.Tf has two or more unconnected trees.

frames.pdf

[TSC21]

That's a direct consequence of #1252. A definite solution is being worked on so stay tunned.

[senthilarul]

Is there any update on this issue. PX4 firmware was working fine for me over the last few months, but since the last 3 days it shows the this error

ODOM: Ex: Could not find a connection between 'local_origin_ned' and 'fcu' because they are not part of the same tree.Tf has two or more unconnected trees.

I even tried building the latest version of firmware from scratch and it shows the same error. Is there a fix for this?

[autorobot192]

Has anyone got any solution for this?

I am also facing the same problem.

[jungx148]

Having same problem and waiting the update.

[TSC21]

Solution coming in #1300

[sasakou0911]

Hi, I've tried to build the latest firmware and I'm facing with the same problem. I'm not sure what should I do for solving it. Should I wait for a while for the update or can I modify something inside the Firmware?

[TSC21]

@ALL the issue your are facing won't break any functionality of MAVROS. Please allow #1300 to be reviewed and merged and as soon as it gets upstream, we will do the release.

[dftossem]

Having same problem and waiting the update.

Thanks for all your work guys.

[autorobot192]

Use this launch file and problem will be solved.

<node name="task_3" pkg="task_3" type="task_3_node" output="screen"/>
<node name ="link1_broadcaster" pkg="tf" type="static_transform_publisher" args="0 0 0 0 0 0 local_origin_ned fcu 10" />

[TSC21]

Use this launch file and problem will be solved.

<node name="task_3" pkg="task_3" type="task_3_node" output="screen"/>
<node name ="link1_broadcaster" pkg="tf" type="static_transform_publisher" args="0 0 0 0 0 0 local_origin_ned fcu 10" />

That doesn't solve anything. Just hides the problem ;)

[alcidesmig]

I'm trying to collect data from mavros/global_position/compass_hdg and mavros/global_position/global and this topics are not being published. I'm having the error the same error of the issue:

ODOM: Ex: Could not find a connection between 'local_origin_ned' and 'fcu' because they are not part of the same tree.Tf has two or more unconnected trees.

Is there any relationship between the error and the topics?
What can I do?

Thank you all!

[TSC21]

I'm trying to collect data from mavros/global_position/compass_hdg and mavros/global_position/global and this topics are not being published. I'm having the error the same error of the issue:

ODOM: Ex: Could not find a connection between 'local_origin_ned' and 'fcu' because they are not part of the same tree.Tf has two or more unconnected trees.

Is there any relationship between the error and the topics?
What can I do?

Thank you all!

Yes. 0.33 was already release and soon the fix should be available through apt. Anyway, if you want this fixed now, build or install MAVROS from source.

[TSC21]

Actually, I rephrase: the problem you are having has nothing to do with the TF issue. The more obvious issue I see is that you don't have GPS data on your autopilot. Anyway, different issue, so please do not continue the discussion in this topic.

[liangpu597]

My Systemis : Ubuntu 18.04 + PX4+ ROS Melodic Morenia.
I am in full simulate, I don't have pixwark
i have same troubles when i use : roslaunch px4 mavros_posix_sitl.launch
I can't understand these solution.
please tell me how to solve? thanks a lot !

[alcidesmig]

My Systemis : Ubuntu 18.04 + PX4+ ROS Melodic Morenia.
I am in full simulate, I don't have pixwark
i have same troubles when i use : roslaunch px4 mavros_posix_sitl.launch
I can't understand these solution.
please tell me how to solve? thanks a lot !

Try to source catkin_ws/devel/setup.bash and /opt/ros/.../setup.bash. My problem was solved doing it. Maybe you can try to run the command inside the catkin_ws folder and rebuild the project before sourcing the environment variables.