3-pos Switch available for inputs for SF, SH, SI and SJ

[3DRacer]

Please make 3-pos Switch available for inputs for SF, SH, SI and SJ

I want to change the Switches SF and SH at the RM TX16S to 3-pos switches.

The mainboard should be able for that. The SA-SB PCB (with two 3-pos Switches) is connected with five wires to MainPCB. The SE-SF PCB is already connectet with five wires.

[philmoz]

Pretty sure this is not possible. 3POS switches require two physical connections to the MCU (one for up and one for down).
SF, SH, SI and SJ only have a single MCU pin allocated to them so they can only be toggle or 2POS switches.

[pfeerick]

SI and SJ will probably always only be 2POS - if you want 3POS on that header, you would use the EX1 and EX2 positions, and configure the flexible switches (FL1 and FL2) instead (i.e. set pots -> EX1 & EX2 -> Switch, then under switches set to EX1 and EX2 respectively and 3POS switch).

Also, note that SI and SJ are NOT on the same header as SF/SH. And yes, while SA & SB also uses five wires, it looks like from the schematic that Risto did reverse enginreering it that for SE & SF, one of them is redundant, and not connected through after it plugs into the mainboard. Have a look at 2.17. Switches SA to SH - you can see the difference between SA/SB and SE/SF there both on the switch module itself, and on the mating breakout board.

https://www.rcgroups.com/forums/showthread.php?3869543-Blog-17-RadioMaster-TX16S-schematic-diagram

[3DRacer]

Thank you for the help. Now I have installed a 3-pos switch at position SF and rewired to EX1. That solved my problem.