External module protocols summary - stodev-com-br/opentx GitHub Wiki
PPM
PXX
ACCESS
DSM2
125000 bauds 8N1 - No parity media/DSM2.png
SBUS (Normal mode)
100000 bauds - Inverted - Even parity media/SBUS Normal.png
Multimodule
100000 bauds - Even parity media/MULTI.png
Crossfire
400000 (or reduced depending on radio capabilities) - Inverted media/XFIRE.png