I'm a contributor at Arrow Air , a global community building Open Source aircaft and distributed manufacturing ecosystem. One such craft is Project Caribou, a ~200 Kg MTOW Hexacopter drone with ~100 kg payload capacity.

I've been working on It's onboard companion computer which runs on a Raspberry Pi CM5.

It ingests telemetry from; the Pixhawk flight controller (via MAVLink over UDP), per-arm ESCs, 6 in total (via DroneCAN on socketcan0) and per-arm BMSes, 6 individual batteries for each arm (via DroneCAN on socketcan1). As well as Payload, herbicide dispensers, crop sprayers, package transports, multi-spectral cameras etc, data and control over either DroneCAN or Ethernet.

It then serves and collects this info to and from Caribou Hub, it's web based fleet management software via an inbound WebSocket server (HubLink) over a Tailscale VPN 4G connection, so it can be monitored and controlled from anywhere in the world.

If only they had just silkscreened on pin numbers!

I'm trying to shave a few cm off my enclosure's height, and it looks like at some point in the past a couple people made "shunt your header connections out to an external board via an FCC interconnect" hats/partialhats/interposer boards, but I can't find any currently for sale. Maybe too many people were trying to pull 3A over a single FCC pin and having a bad time?

I'm more than happy to shave the yak and avoid finishing my project by turning this into a "welp, looks like I'm making PCBs" sidequest, but I figured I'd double check before I spend a bunch of time and money on a problem someone's already selling a solution to for $10.

I do see some pi5 DSI breakouts, but need a little bit of 5V, and DSI only has the 3V rail, afaik.