I wanted to connect my Mini Naze32 using S-BUS to my FrSky receiver. But I didn’t want to bother with an inverter and such. Then I found this site.
So I upgraded my X4R-SB with an non-inverted SBUS out. I read somewhere (src unknown) that you could use one of the nice pads next to the inverter on the board. That makes soldering a lot easier.
(I did add a current limiter resistor in there after this picture was taken just to be safe)
And I ended up with a nice compact flight controller package: