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Create a new MODEL: setting on PC

BetaFPV Meteor65 HD Tiny Whoop
With OpenTX/EdgeTX, you can register multiple aircraft information as "MODEL"s and switch between them for control. Here, we will introduce how to create a "MODEL" on your PC using BetaFPV's Meteor65 HD(FrSky D16) as an example. You can also create a model with the radio by itself .
The same operation is possible with any radio that uses OpenTX / EdgeTX, such as Jumper T-Pro, T-Lite, T12, T16, RadioMaster Zorro, TX series and FrSky Taranis series. However, keyswitch assignments / functions differ depending on model, and screen / menu configuration differs depending on installed version of OpenTX / EdgeTX.
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Register a new MODEL input area

You can create models using OpenTX/EdgeTX Companion installed on your PC. First, read model information from radio, then create and edit them on OpenTX/EdgeTX Companion, and write it back to the radio. The model information for up to 60 aircrafts stored in the radio is managed as one ".otx" format binary file on PC. You can manage by creating multiple ".otx" format files on your computer and transferring them to the radio as needed. This way, an infinite number of model information can be used in one radio.
PC When you turn on the radio and connect it to your PC with USB cable, a menu like this will be displayed. Select "USB Storage(SD)" to create and edit models. Then, after waiting for a while (about 20-30 seconds), two drives, "ESD-USB" or "USB drive", and "Taranis" or "(your radio name)" will be mounted in Explorer on your computer.
PC Start OpenTX/EdgeTX Companion. Then, click second icon from the top, "Read Models and Settings From Radio" on the left side of the screen. Then, model information etc. saved in the radio will be loaded into OpenTX/EdgeTX Companion.
If you select [File]-[New] from the menu here, you can create a completely new ".otx" format file. If you select [File]-[Open], you can read ".otx" format file stored in your computer.
Error occurs !?
PC When loading settings from the radio, you may see the error "Can't extract RADIO/radio.bin" as shown in the figure. If your radio is a recently released product and OpenTX/EdgeTX Companion does not yet support it, you may see an error like this. In that case, please wait for the version upgrade of OpenTX/EdgeTX Companion.
EdgeTX, which has a faster development pace than OpenTX, may already support even radios that OpenTX does not support. If you are using OpenTX, you may consider migrating to EdgeTX.
If you see this error even though your radio is supported by OpenTX/EdgeTX Companion, the model information file stored in the radio may be corrupted. It may be solved by initializing or replacing microSD card or updating the firmware of the radio.
PC Then model list is displayed like this. You can register aircraft informations of 60 aircraft as a "MODEL" here. At first, dummy aircraft information called "Model 01" is registered in the first area. Currently selected model name is displayed in bold.
You can edit this "Model 01", but let's newly register it in the second area here. Click "02" column and click .
PC Then the "Model Wizard" screen will open. This allows you to first assign stick channels (Mixes screen setting) and then set some timers.
Click Cancel if you do not want to use this wizard.
When using the wizard, enter a name of your choice in "Model name", and for Tiny Whoop, select "Multirotor" and click "Next".
PC If you want to use the wizard, then assign stick channels. If you want to change channels, select it from the drop-down list. Click Next when done.
Behavior name Name of control
Throttle -
Roll Aileron
Pitch Elevator
Yaw Rudder
PC Then you will see a screen like this. Select whether to set three options automatically. Check the items you want to set and click "Next".
Throttle Cut
The function that cuts throttle is automatically set in the throttle channel of Mixes screen. A setting is added so that throttle will have a weight of -100 when SH switch up.
Throttle Timer
Sets a timer that counts the amount of time throttle has been in operation (non-zero position). A timer is automatically set so that trigger is THs and initial counter value is 00:00:00.
Flight Timer
Set a timer that counts the total time since throttle first reached a non-zero position. A timer is automatically set so that trigger is THt and initial counter value is 00:00:00.
PC The end of the wizard screen looks like this. Check "OK, I understand" and click "Finish" to save.
PC In the second entry, we have a new model. You can start editing this model by clicking (Edit) icon.
You can use icons to the right of this icon to perform operations such as "delete", "cut", "copy", "paste", and "insert" the model. You can also copy an already created model and edit a part of it.

On PC: Setup screen settings

PC Select a model on model list screen and click (Edit) icon to display this screen. There are only three screens that require minimum settings: "Setup", "Input", and "Mixes".
First, click "Setup" tab. This is the screen for basic model settings. All you need to enter on this screen is the model name and transmission protocol settings. Enter any model name in "Model" field. You can use alphanumericals, white spaces, and hyphens in the model name.
For details on these all setting items, see MODEL SETUP setting items explanation .
Communication protocol settings
PC Next, set transmission protocol. When using a transmitter built into the radio, set "Internal Radio System" field, When using a transmitter installed in module bay, set it in "External Radio Module" field. Here, set communication protocol of drone that you checked in advance.
Drone to be bound this time uses "D16" type in Frsky protocol. Select "DIY Multiprotocol Module" in "Multi Radio Protocol" field. Select "FrSky" in "Multi Radio Protocol" field and "D16" in "Sub Type" field. No other changes are required.
This setting screen changes depending on the protocol selected. Depending on the protocol, it may be necessary to set other items as well. Check website or instruction manual of FC board or receiver board.
ExpressLRS(ELRS) protocol
For information on how to set the communication protocol when using the ExpressLRS (ELRS) protocol, see How to set up ExpressLRS transmitter .
Main screen and Model Image settings
PC Depending on the type of radio, you can set Main screen and Model Image. Model Image is displayed as an image of the selected aircraft on main screen and MODELSEL screen . See below for details.
Function Switches
PC On the front panel of recent radios that support OpenTX / EdgeTX, there are products with 6 buttons. These switches are called "function switches". Different behavior can be set for each "MODEL" set in the radio. See below for details.
Failsafe settings
Depending on communication protocol selected, "Failsafe mode" field on this screen allows you to specify how the drone behaves when communication between radio and drone is lost. See Failsafe settings for details.

On PC: Input screen settings

PC This screen lists input devices used for maneuvering. It can also be thought of as a screen that assigns input devices such as sticks, switches, and LOGICAL SWITCHES mounted on the radio to virtual channels defined inside OpenTX/EdgeTX. Number / name of the virtual channel is lined up after the [I] mark on the far left.
First four channels are already assigned Aileron, Elevator, Throttle, Rudder in that order. This allocation order is determined by specifying "Default Channel Order" field on [Settings]-[Settings] menu screen. Since it is a virtual channel, it can be assigned in any order. If this order does not match the aircraft you are binding to, change it on next Mixes screen.
PC Assign switches to virtual channels 5-8. If you double-click "I5" column on the screen above, you will see a screen like this. There are many settings that can be made regarding the behavior of input device, but this time we will only assign the switch.
In the "Source" field, select SG (Switch G) that will be the input device. You can give this virtual channel a name in "Input name" field. Since Arm is assigned to SG this time, I named it "Arm". You can leave the name blank.
Similarly, assign SA, SD, SH to virtual channels 6-8. Since it is a virtual channel, it can be assigned in any order.
For details on these all setting items, see MODEL INPUTS setting items explanation .
Tips
If you simply assign one switch to one channel, you can register it directly in "Source" field of next Mixes screen without registering the switch on this Input screen.
PC When screen looks like this, setting of Input screen is complete.
Input device management
PC If you right-click on a channel already been entered, a screen like this will be displayed. You can edit, insert new inputs before and after, move and delete.

On PC: Mixes screen settings

PC This screen defines which input device (virtual channel) defined on Input screen is transmitted to which physical channel of receiver (aircraft). Destination channel number is lined up on the far left, and the number of assigned virtual channel is lined up next to it.
First four channels are already assigned Aileron, Elevator, Throttle, Rudder in that order.
PC Allocate virtual channels to physical channels 5-8. If you double-click CH5 column on the screen above, you will see a screen like this. There are many settings that can be made regarding the behavior of virtual channels, but this time we will only assign channel numbers.
In "Source" field, select virtual channel [I5]. This time, "I5" is named "Arm", so select [I5:Arm].
When we defined virtual channels, we specified the same number as the physical channel, so simply set [I5:Arm] for CH5, [I6:Mod] for CH6, [I7:Flp] for CH7.
For details on these all setting items, see MODEL MIXES setting items explanation .
PC When Mixes screen looks like this, setting is complete.
Channel management
PC If you right-click on a channel already been entered, a screen like this will be displayed. You can add, edit, delete, copy, cut, duplicate, and change the order.

On PC: Write back model information to radio

Save to computer
PC After creating and editing model, first save the model information on your computer for back-up. Simply select [File]-[Save] or [File]-[Save As] from the menu.
Write back to radio
PC Next, let's transfer the model information to radio. Click "Write Models and Settings To Radio" at top of icons on the left side of the screen.
PC Then you will see a screen like this. Set "Check Firmware compatibility" and "Backup before write" as you like.
If you click "Write to TX" here, the model information will be written to radio.
Next, let's bind radio and drone and do the first time take off. Please see the following page for details.

Precautions when removing radio from computer

PC When radio is connected to PC in "USB Storage (SD)" mode, memory of the radio is visible as a USB memory. When removing radio from PC, perform "Eject" operation of two drives, "ESD-USB" or "USB drive", and "Taranis" or "(your radio name)", and then remove it, in the same way as when removing USB memory.

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