Initial write-up

Author: deadbytefpv

docs/quick-start/transmitters/tx-prep.md

@@ -347,3 +347,31 @@ By default, a fresh model does not have any Aux Channels configured (Aux channel
     <figure markdown>
     ![mixesAux Color](../../assets/images/txprep-clr-mixAux.jpg)
     </figure>
+
+### V4.0 Arming Options
+
+Starting with ExpressLRS v4.0, an additional Arming method is introduced. 
+
+The default arming method, via Channel 5 (Aux1), is the default, and still encouraged to be used by majority of FPV pilots using Betaflight, INAV or Ardupilot (and their respective derivatives like Emuflight, etc.). This will now be called **Arming Mode CH5**.
+
+The new arming method called **Arming Mode Switch** utilizes a switch on an EdgeTX radio. This switch can either be tied into a channel or not. What this means is that your Channel 5 will be free for other functions, like controlling gains on your stabilizer, or changing flight modes, or as another full proportional channel when using any of the Full Resolution Modes.
+
+!!! Note "Arming Mode Switch Requirement"
+    Arming Mode Switch **requires** EdgeTX version 2.11 or newer. If you cannot find the "Arm using" option, that means you NEED to update your EdgeTX firmware.
+
+#### How to set up Arming Mode Switch:
+
+1. Press the ++"MDL"++ Key.
+    - Older Radios or those with only one Menu Key will need to short-press the ++context-menu++ Key to access the Model Menu.
+    - Consult your Radio User's Manual on how to get to the Model Menu.
+2. Press the ++"PAGE"++ Key until you reach the Model Setup Page.
+    - On radios with Colored screens, this should be the first page when you activate the Model Menu.
+    - On radios with Monochrome screens, this should be the second page upon activating the Model Menu.
+3. Scroll down until you reach the Internal or External RF settings, depending on which module you want to use for this model.
+    - Colored screens provide separate pages for these.
+    - On Monochrome screens, the options are all in one page. 
+4. Short-press the scroll-wheel button or press the ++enter++ Key and change the setting to "Switch"
+5. Press the ++enter++ Key to apply your selection.
+7. Use the scroll-wheel and set your new arming switch. It can be any switch on the radio, a Logical Switch or any source.
+8. Press the ++enter++ Key once more to set the switch.
+9. Press ++"RTN"++ Key once your done with your changes.

docs/software/switch-config.md

@@ -18,11 +18,11 @@ This table summarizes the switch configuration modes, available channel switch p
 | 2   | Sticks | **Normal<br>Range** | **Normal<br>Range** | **CRSF Ext<br>Limits** | CRSF Ext<br>Limits<sup>H</sup> | **CRSF Ext<br>Limits** |
 | 3   | Sticks | **Normal<br>Range** | **Normal<br>Range** | **CRSF Ext<br>Limits** | CRSF Ext<br>Limits<sup>H</sup> | **CRSF Ext<br>Limits** |
 | 4   | Sticks | **Normal<br>Range** | **Normal<br>Range** | **CRSF Ext<br>Limits** | CRSF Ext<br>Limits<sup>H</sup> | **CRSF Ext<br>Limits** |
-| 5 | Aux 1 | **2-pos<br>Arm** | **2-pos<br>Arm** | **2-pos<br>Arm** | CRSF Ext<br>Limits<sup>H</sup><br/>Arm | **2-pos<br>Arm** |
+| 5 | Aux 1 | **2-pos<br>Arm** | **2-pos<br>Arm** | CRSF Ext<br>Limits<sup>H</sup><br/>Arm* | CRSF Ext<br>Limits<sup>H</sup><br/>Arm | CRSF Ext<br>Limits<sup>H</sup><br/>Arm* |
 | 6   | Aux 2 | *6-pos*<sup>RR</sup> | *64/128<br>-pos*<sup>RR</sup> | **CRSF Ext<br>Limits** | CRSF Ext<br>Limits<sup>H</sup> | CRSF Ext<br>Limits<sup>H</sup> |
 | 7   | Aux 3 | *6-pos*<sup>RR</sup> | *64/128<br>-pos*<sup>RR</sup> | **CRSF Ext<br>Limits** | CRSF Ext<br>Limits<sup>H</sup> | CRSF Ext<br>Limits<sup>H</sup> |
 | 8   | Aux 4 | *6-pos*<sup>RR</sup> | *64/128<br>-pos*<sup>RR</sup> | **CRSF Ext<br>Limits** | CRSF Ext<br>Limits<sup>H</sup> | CRSF Ext<br>Limits<sup>H</sup> |
-| 9   | Aux 5 | *6-pos*<sup>RR</sup> | *64/128<br>-pos*<sup>RR</sup> | **CRSF Ext<br>Limits** | CRSF Ext<br>Limits<sup>H</sup> | CRSF Ext<br>Limits<sup>H</sup> |
+| 9   | Aux 5 | *6-pos*<sup>RR</sup> | *64/128<br>-pos*<sup>RR</sup> | - | CRSF Ext<br>Limits<sup>H</sup> | - |
 | 10  | Aux 6 | *6-pos*<sup>RR</sup> | *64/128<br>-pos*<sup>RR</sup> | - | CRSF Ext<br>Limits<sup>H</sup> | CRSF Ext<br>Limits<sup>H</sup> |
 | 11  | Aux 7 | *6-pos*<sup>RR</sup> | *64/128<br>-pos*<sup>RR</sup> | - | CRSF Ext<br>Limits<sup>H</sup> | CRSF Ext<br>Limits<sup>H</sup> |
 | 12  | Aux 8 | *16-pos*<sup>RR</sup> | *64/128<br>-pos*<sup>RR</sup> | - | CRSF Ext<br>Limits<sup>H</sup> | CRSF Ext<br>Limits<sup>H</sup> |
@@ -31,6 +31,8 @@ This table summarizes the switch configuration modes, available channel switch p
 | 15  | Aux 11 | - | - | - | CRSF Ext<br>Limits<sup>H</sup> | - |
 | 16  | Aux 12 | - | - | - | CRSF Ext<br>Limits<sup>H</sup> | - |
 |  | Packet<br>Rates | 50 thru<br>F1000 | 50 thru<br>F1000 | 100&333<br>Only | 100&333<br>Only | 100&333<br>Only |
+
+<small>* v4.0 changes, with the introduction of the new arming methods</small>
 
 ### Switch Position / Channel Resolution