I’m looking at putting together a sub-250g fixed-wing with FPV. I’m considering the Matek F405-SE and have been looking at http://www.mateksys.com/?portfolio=f405-se and Mateksys F405-SE/WSE — Copter documentation, but I’m still not clear on exactly how all the serial protocols work relative to the hardware inversion.
If using an FrSky-compatible receiver with SBUS/S.PORT (not F.PORT, the receiver can’t handle it) I understand that the SBUS line goes to the SBUS pad, but I’m not sure what I need to do with S.PORT. Betaflight and Inav use softserial on TX2, but how does this work for Ardupilot? Do I need a separate inverter between TX2 and the S.PORT input on the receiver? If so, do I need a bidirectional inverter or just a unidirectional one?
I’ll be running a BLHeli_32 ESC, and I assume I’d connect it to RX6, but do I leave the telemetry as default or S.PORT in BLHeli_32 Suite?