edgetx/docs/development/external-module-protocols.md

External Module Protocols

PPM

PXX (FrSky XJT)

ACCESS (FrSky RM900 ACCESS)

DSM2 (Spektrum hacked module)

125000 bauds 8N1 - No parity

SBUS (Normal mode)

100000 bauds - Inverted - Even parity

Multimodule

100000 bauds - Even parity - 2 stops bit

Crossfire

400000 bauds (or reduced depending on radio capabilities) - Inverted