Hi,

I'm trying to setup a simulation environment for a multi-vehicle system using ArduCopter SITL. Right now I have a script that starts multiple ArduCopter instances but I need to change the ID of the UAV in order to be able to distinguish between them.

I can do "param set SYSID_THISMAV 2" for the second UAV but the changes only take place once I restart the ArduCopter instance. 

I tried modifying sim_vehicle.sh and adding "--cmd= param set SYSID_THISMAV 2" when initialising mavproxy but I get the following output: "Unable to find parameter 'SYSID_THISMAV'. The result is that the ID doesn't change. 

I'm able to start an instance, change the ID manually and restart but the process is tedious and it would be very useful to set it up from the start. 

Any help is highly appreciated!

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Could you please share the script that starts multiple ArduCopter instances and the way how you manage to do it? Thanks.

Hi,

What I ended up doing is creating multiple folders with the ArduCopter code. Each corresponds to one UAV with its own configuration and SYSID. (ardupilot/ArduCopter1 , ardupilot/ArduCopter2, ...)

Then I start a terminal with the different instances from each folder:

gnome-terminal \
--tab -t ArduCopter1 -e "bash -c \"cd ~/ardupilot/ArduCopter;sim_vehicle.sh -v ArduCopter -I 1 -L LOC1; exec bash\"" \
--tab -t ArduCopter2 -e "bash -c \"sleep 2; cd ~/ardupilot/ArduCopter2;sim_vehicle.sh -v ArduCopter -I 2 -L LOC2;exec bash\"" \
--tab -t ArduCopter3 -e "bash -c \"sleep 5; cd ~/ardupilot/ArduCopter3;sim_vehicle.sh -v ArduCopter -I 3 -L LOC3;exec bash\"" \

I'm sure there are other (probably cleaner) ways to do it but this works for me.

Hello i am very much interested in a similar setup for my research . How did you go about changing the port for each Arducopter instance.. cause i think it uses port 14550 by default right??..and if this is not changed it leads to a lot of conflict.

thanks  for any help .

Hi! I'm trying to simulate multiple UAVs in PX4 SITL. I am trying to start two instances of jmavsim , but I am kinda stuck. How did you configure udp ports for different instances?

Pere Molins Ayuso said:

Hi,

What I ended up doing is creating multiple folders with the ArduCopter code. Each corresponds to one UAV with its own configuration and SYSID. (ardupilot/ArduCopter1 , ardupilot/ArduCopter2, ...)

Then I start a terminal with the different instances from each folder:

gnome-terminal \
--tab -t ArduCopter1 -e "bash -c \"cd ~/ardupilot/ArduCopter;sim_vehicle.sh -v ArduCopter -I 1 -L LOC1; exec bash\"" \
--tab -t ArduCopter2 -e "bash -c \"sleep 2; cd ~/ardupilot/ArduCopter2;sim_vehicle.sh -v ArduCopter -I 2 -L LOC2;exec bash\"" \
--tab -t ArduCopter3 -e "bash -c \"sleep 5; cd ~/ardupilot/ArduCopter3;sim_vehicle.sh -v ArduCopter -I 3 -L LOC3;exec bash\"" \

I'm sure there are other (probably cleaner) ways to do it but this works for me.

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