Flying multiple RB5s

tahawaru

I want to fly more than ONE RB5(https://docs.modalai.com/qualcommflightrb5/) using 1 single laptop running Ubuntu 22.04.
I'm using MAVSDK-python.
My understanding at the moment is that the only the port 14550 is working.
The examples given in https://github.com/mavlink/MAVSDK-Python or https://github.com/julianblanco/MAVFleetControl work for a single drone but not for more than 1.
Any help on this topic?

Best wishes,
Massa

Moderator

Please see the documentation for mavlink routing here: https://docs.modalai.com/mavlink/#mavlink-routing-on-voxl

It shows how to configure the IP and port

tahawaru

@Moderator
"Up to 16 simultaneous external UDP connections can be established with voxl-mavlink-server. These can be connections to qGroundControl, MAVROS, MAVSDK, or any custom software on the same network as VOXL. voxl-mavlink-server listens for mavlink heartbeats on the standard mavlink port 14550 and opens a new link when it receives a heartbeat from a new IP. Each link receives all mavlink data coming from the autopilot and any messages received on the UDP port will be forwarded to the autopilot."

Do you have a sample code to implement the UDP connections? or a reference for implementation?
Can we change the port 14550 or add new ones? if yes, how?

Best wishes,

Moderator

This post is deleted!

Moderator

@tahawaru you'll need to change the code here: https://gitlab.com/voxl-public/voxl-sdk/services/voxl-mavlink-server/-/blob/master/src/gcs_io.c?ref_type=heads#L59

if you consider making this a parameter, we are always open to merge requests!

tahawaru

@Moderator
1)

I want to change line 59 on the file gcs_io.c only like this
#define GCS_UDP_PORT 14552 // default in QGC

then build the voxl-mavlink-server, replace voxl-mavlink-server_1.3.2_arm64.deb by the generated .deb file to the voxl sdk.
Then flash 1 rb5 with it to test if it works.

is this approach valid?

I have cloned and opened the voxl-mavlink-server (from the link you've sent me above) with Visual Studio Code.
I get the following error:
cannot open source file "c_library_v2/common/mavlink.h" (dependency of "gcs_io.h")
Could you help on this?

Best wishes,

Moderator

@tahawaru did you follow the build instructions in the README?

tahawaru

@Moderator
I have followed the build instructions and got the voxl-mavlink-server built.
I'm currently testing it with different ports (other than 14550).

Thank you for your support.