i did some research finding no reference for my task: i need to connect three Mavlink “services” to a Pixhawk: a geotagging device, a telemetry radio link and a gimbal controller. I don’t want to use 3 serials and run their cabes, rather i would like to run one single mavlink tx-rx to an “hub” which would mux-demux mavlink messages to the three serials services, all in a tiny package (like arduino nano, teensy…) and in a way that would not need running a linux box (so i would like instant boot, cheap, reliable…)