Hello,
I have been trying for multiple days to connect two or more drones to QGroundControl via MavSim and Gazebo simulation.https://dev.px4.io/en/simulation/gazebo.html ), and then I can control it via the QGroundControl, and watch the simulation on Gazebo normally.
Though, when I try to launch two or more drones, as in https://dev.px4.io/en/simulation/multi-vehicle-simulation.html#additional-resources , it doesn’t show up at all at QGroundControl, I get the “Waiting for vehicle connection” screen and I cannot connect to it by any means, consequently, I cannot control them.
Thank you in advance.
Also, I have already tried to uninstall everything, and reinstall it multiple times.
That’s odd. I don’t know why at least the first done would show up in QGC. I’m not sure QGC supports multiple drones but at least one should be available.
Have you tried multiple drones SITL with jMAVSim?
And could you paste the command and output that you get when you start SITL for the case where it doesn’t work?
Hi Julian,
I know that QGC supports multiple drones because in fact, I had the simulation working at some time, but now I can’t make it work anymore.
I am actually making tests with a Anti-Collision software, so I thought Gazebo should be the best solution since I am not using HITL but SITL, with some hardware inputs for the algorithm. Should jMAVSim be still recommended?
I run the following commands for the multiple drones simulation:
cd ~/src/Firmware
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Ok, no if you require Gazebo then Gazebo makes sense
I am running the latest PX4 Firmware, dated from yesterday afternoon.
I just tried this on a fresh Ubuntu 18.04.2 and it works as expected. I can chose between vehicle 2,3, and 4 in QGC.
Can you copy&paste the output you get when you run the roslaunch command?
YCH188
April 3, 2019, 11:15am
9
Can you show the rostopic list and /mavros/state to check the problem?
(…continuation…)
INFO [px4] Calling startup script: /bin/sh etc/init.d-posix/rcS 1
RTL_DESCEND_ALT: curr: 5.0000 -> new: 10.0000
RTL_LAND_DELAY: curr: 5.0000 -> new: 0.0000
| ___ \ \ \ / / / |/ / \ V / / /| | | |
px4 starting.
INFO [px4] Calling startup script: /bin/sh etc/init.d-posix/rcS 2
RTL_DESCEND_ALT: curr: 5.0000 -> new: 10.0000
RTL_LAND_DELAY: curr: 5.0000 -> new: 0.0000
| ___ \ \ \ / / / |/ / \ V / / /| | | |
px4 starting.
INFO [px4] Calling startup script: /bin/sh etc/init.d-posix/rcS 3
RTL_DESCEND_ALT: curr: 5.0000 -> new: 10.0000
RTL_LAND_DELAY: curr: 5.0000 -> new: 0.0000
For rostopic list I get the following:
/clock
And for mavros/state, how do I get it???
If possible, could you give me the steps to make a clean install and not miss anything of it? I think I may be screwing up somewhere…
YCH188
April 3, 2019, 11:56pm
14
use the command:
By running it, I got the following result:
rostopic echo /uav1/mavros/state
So I’ll try to solve it by this means for now…
Still nothing runs guys… Can anyone help me with the installation? I can’t seem to make it work anyhow…
I followed these instructions: https://dev.px4.io/master/en/simulation/multi-vehicle-simulation.html
Btw. to paste long output like this you can also use services like pastebin.com .
Does Gazebo actually come up and show the 3 drones?
Yes, Gazebo launches normally and I get the 3 drones, no errors as showed.
. What is your Firmware version?