SR/SxR Switchology in OpenTX

 There was a question asked about how to set up Hover and Knife Edge modes in OpenTX for the FrSky Stabilized receivers.

As I've mentioned in the past, the mode selection table, which is based on Ch10 and Ch11, is absolutely horrid for these receivers, which is why I generally just point people at Quick Mode, which not only is easier to setup but only costs you two mostly useless modes, Hover (which works, ish) and Knife Edge (which only goes one way and is thus kind of useless)

This is a simpler setup in terms of logic switches that the push-button example I did previously in ETHOS, but as you can see, the programming is actually a little more complex since there isn't a direct replacement for a VAR mix in OpenTX (in so far as a VAR Mix can't fully replace a GVAR, a GVAR can't fully replace a VAR mix)

Here is what is in my opinion a sane switch setup for OpenTX

I'm using the following Switchology, this was setup on my TX16S

SB is the main Stab Mode switch. Up is Stab off, Mid is Stab only, Down is self-level/hover/KE

SC is the self-level mode switch. Up is KE, Down is Hover, mid is regular Self-Level

I used 3 LS's to do this.

L01 is AND SBdn SCup (KE)
L02 is AND SBdn SCdn (Hover)
L03 is AND SBdn !SCup (!KE)

Ch10 has the following mixes:

1. Source:MAX Weight 100%
2. Source:MAX Weight -100% Switch:L01 Multi:Replace
3. Source:MAX Weight 0% Switch:SBup Multi:Replace

Ch11 has the following mixes:

1. Source:MAX Weight 0%
2. Source:MAX Weight 100% Switch:L03 Multi:Replace
3. Source:MAX Weight -100% Switch:L02 Multi:Replace

For a Panic Mode, SH can be used as the input for a 4th Replace mix for both CH10 and 11 (force both to +100 to engage Self-Level, must be the last mix to override the others)

I don't fully like this, if only because it doesn't quite have the default mode I'd like. It defaults to stabilization on, and I'd prefer Stabilization off or self-level as the default. That would require even more complex mixing though, because I really am leveraging mixer priority to simplify the number of needed mixer lines (something I didn't do in ETHOS because creating a single value line in a VAR mix is way quicker than setting up a mixer)