Newbie: can't get radio to work (TBS Crossfire to Matek F765-WING)

[Allister (Allister Schreiber)]

I can’t explain why, but ArduPilot Serial port mapping doesn’t line up with the UART labels. I’m sure there’s a good reason, but it’s beyond me.

http://www.mateksys.com/?portfolio=f765-wing#tab-id-5

On the F765 TX/RX3 is SERIAL4.

You don’t need MAVLink but if you’re interested in setting up the Yaapu telemetry through CRSF here’s a good thread on it.

Passthrough telemetry over CRSF (crossfire)

This is to track development and testing of a custom telemetry implementation over CRSF, the goal is to have something equivalent to the frsky passthrough protocol. The CRSF protocol has been added recently (as of Oct 2020) to ArduPilot by @andyp1per. Like fport CRSF can carry both RC and bidirectional telemetry. The CRSF receiver can be wired to an ArduPilot FC in 2 ways, by using RCIN or by using a serial port (SERIAL_PROTOCOL=23). For telemetry support it requires the usage of a serial po…