Max mavlink connections

General
1

Hello, I’m trying to get this working in Arduplane (3.6.0) but I think it pertains to all Ardupilot flavours so I’ll post it here.

I’m trying to get a total of 3 Mavlink connections out of the Pixhawk as follows:

Serial 1 (Telem1) Mavlink Telemetry radio
Serial 2 (Telem2) FrSky telemetry
Serial 3 (GPS) GPS :slight_smile:
Serial 4- Mavlink connection to FLIR
Serial 5- Mavlink to MinimOSD

I can confirm that I can get at least two mavlink streams going (Serial 1 and serial 4) but getting the third one (Serial 5) is escaping me. Is there perhaps a limit on the number of mavlink connections available??

2

Osd should just piggyback off the radio, it just needs to listen to the messages

1 Like
3

@pywong Serial 5 is reserved for debug purposes, it can’t be assigned to anything else.

1 Like
4

Thanks for the info I’ll try piggy backing off Serial4 or Serial 1. :slight_smile:

5

I can confirm that I can get at least two mavlink streams going (Serial 1
and serial 4) but getting the third one (Serial 5) is escaping me. Is there
perhaps a limit on the number of mavlink connections available??

SERIAL5 is in use by NuttX as a console. You can disable this by playing
with the startup scripts.