Monochrome Remote Control Settings
I. RC Transmitter Settings
Tools
From the main view, press the [SYS] button to open the Tools screen.
The Tools page in radio settings is where you can select and execute tools based on Lua scripts. Lua scripts located in the SD card's Tools folder will be listed here. Selecting a tool will execute it.
By default, EdgeTX includes several tools. Additional tools can be downloaded and added to the SD card. The following tools are included in the default EdgeTX SD card.
Wizard Loader
Setup wizard:
SCREENSHOTS
Stores screenshot image files configured through the Special Functions Screenshot option. This folder is empty by default (except for the README.txt file).
Setup wizard configuration menu:
The Wizard Loader tool helps you set up a new model by running the setup wizard for a specific model type. Once you select a model type, the wizard will guide you through a series of prompts and then configure your selected model based on the information provided.
Note: The wizard does not create a new model, it only configures the currently selected model. You must manually create a new model first, then run the wizard. If you run this wizard on an already configured model, it will overwrite your model settings!
Press the [PAGE>] button to go to the SD Card screen.
II. SD Card
SD Card screen displays the contents of the SD card, allowing you to browse folders and interact with files within them. Each folder contains a README.txt file that explains what type of files are suitable for that folder. After selecting a file in a folder, depending on the type of file selected, you can perform the following operations:
- Assign Bitmap - Assign the selected image file as the model image for the currently selected model.
- Copy - Copy the selected file.
- Delete - Delete the selected file.
- Execute - Execute a Lua script, applicable to files ending with .lua.
- Flash [Target] - Flash the selected firmware file to the specified target module, such as flashing a bootloader or internal multiprotocol module.
- Paste - Paste the copied file.
- Play - Play the selected sound file.
- Rename - Rename the file.
- View Text - View selected .txt, .csv, and .lua files.
The folders displayed on the SD card screen are the same as those seen when connecting the radio transmitter to a computer. Below are the names and descriptions of the folders in the default EdgeTX SD card:
2.1 BACKUP
Stores model files backed up from EEPROM. Only applicable to radio transmitters that store model files in EEPROM.
2.2 FIRMWARE
Contains firmware files that need to be flashed. This folder is empty by default (except for the README.txt file). When selecting a .bin file, you can choose to flash the firmware to a specific module.
Only firmware files in this folder will be displayed in the bootloader menu.
2.3 IMAGES
Note: This folder is only applicable to radio transmitters with 212x64 displays.
Stores custom model image files. This folder is empty by default (except for the README.txt file). After selecting an image file, you can choose Assign Bitmap to assign the selected image file as the model image for the currently selected model.
The ideal size for model images is 64x32 pixels, and the format should be .bmp. The filename should not exceed 9 characters, and the image format should be 4-bit indexed color mode.
2.4 LOGS
Stores log files configured through Special Functions SD Log. These files can be viewed using the View Text option. This folder is empty by default (except for the README.txt file).
2.5 MODELS
Stores model files, label information, and pre-flight checklists. Each model has a model[#].yml file containing all configuration options.
Models deleted through the radio transmitter will be moved to the DELETED folder contained within this folder. The remaining model files will be displayed on the Model Selection screen.
If you have configured the Display Checklist option in model settings, model notes files will be stored in this folder. Model notes files must be .txt files, and the filename must exactly match the model name, for example: Mobula6.txt.
2.6 RADIO
This folder contains the radio.yml file, which stores all radio transmitter configuration data. If this file is corrupted or lost, the radio transmitter will enter Emergency Mode and create a new radio.yml file with default settings.
2.7 SCREENSHOTS
Stores screenshot image files configured through Special Functions Screenshot. This folder is empty by default (except for the README.txt file).
2.8 SCRIPTS
This folder and its subfolders store Lua scripts. By default, it includes the following subfolders. You can download additional Lua scripts from https://github.com/EdgeTX/lua-scripts.
- Functions - Stores function Lua scripts that can be activated through Special Functions Lua scripts. This folder is empty by default (except for the README.txt file). For more information about function Lua scripts, refer to: Function Scripts.
Mixes- Stores Lua mixer scripts. This folder is empty by default (except for the README.txt file). For more information about mixer Lua scripts, refer to: Custom Mixer Scripts.RGBLED- Stores Lua scripts for controlling RGB LEDs (if supported by hardware).- Tools - Stores Lua scripts available in the Tools screen.
- Wizards - Stores wizard Lua scripts available in the Tools screen.

2.9 SOUNDS
Stores EdgeTX sound packs suitable for the radio transmitter. Sound packs are associated with the Voice Language option in Radio Settings. After selecting a sound file in this folder, you can choose Play to play the selected sound file.
Sound packs can be manually downloaded from: https://github.com/EdgeTX/edgetx-sdcard-sounds/releases. You can also create custom sounds for EdgeTX to use. Ensure your custom sounds meet the following requirements:
- Filename: 123456.wav (maximum 6 characters plus .wav extension)
- Sample rate: 32 kHz (or 16 kHz, 8 kHz)
- Bit depth: 16-bit (or 8-bit)
- Channels: Mono
- Codec: PCM
Press the [PAGE>] button to enter the Radio Settings screen.
3. Transmitter Settings
3.1 Transmitter Settings

The Transmitter Settings screen is where you configure the basic settings for the transmitter. It includes the following options:
Date - Current date. This date is used for SD card log files.
Time - Current time. This time is used for SD card log files.
Battery Range - Set the maximum and minimum voltage for the battery voltage meter. This should be set according to the battery type you are using.
3.2 Sound

Mode - Configure when sounds are played.
- All - Beep when buttons are pressed and play sounds when there are alerts or warnings.
- No Keys - No beep when buttons are pressed or knobs are turned, but sounds are played when there are alerts or warnings. Also plays sounds triggered by special functions.
- Alerts - Only plays alert or warning sounds. Also plays sounds triggered by special functions.
- Mute - No beep or sounds are played.
Volume - Main volume of the transmitter.
Beep Volume - Self-explanatory
Beep Length - Self-explanatory
Beep Pitch - Self-explanatory
WAV Volume - Volume for alerts and warnings, and sounds played via the Play Track special function
Background Volume - Volume for background .wav files (music) played via the BGMusic special function
3.3 Beeper

Volume - Volume of the beeper sounds
Zero Pitch - Low pitch frequency
Max Pitch - High pitch frequency
Repeat Zero - Time before tone repeats, in milliseconds
3.4 Haptic

Mode - Configure when the transmitter vibrates.
- All - Vibrates when buttons are pressed and when there are alerts or warnings.
- No Keys - No vibration when buttons are pressed or knobs are turned, but vibrates when there are alerts or warnings.
- Alerts - Only vibrates during alert or warning sounds.
- Mute - No vibration
Length - Duration of the vibration.
Intensity - Strength of the vibration.
3.5 Backlight

Mode
- Off – Always off.
- Keys – Turns on when buttons are pressed.
- Controls – Turns on when using sticks, switches, and knobs.
- Both – Turns on when using buttons, sticks, switches, and knobs.
- On – Always on.
Duration - Number of seconds the backlight stays on. Minimum value is 5 seconds. Maximum value is 600 seconds.
Brightness - Adjust the screen backlight brightness level.
Alert - The backlight turns on when there are alerts or warnings.
Contrast - For LCD displays, adjust the screen contrast settings. For OLED displays, adjust the OLED brightness level.
Splash Screen - Duration of the splash screen display.
Splash Sound - Toggle whether to enable/disable the splash sound.
Power On Delay - Delay between pressing the power button and the transmitter turning on. Options are: 0s, 1s, 2s, 3s
Power Off Delay - Delay between pressing the power button and the transmitter turning off. Options are: 0s, 1s, 2s, 3s, 4s. It is recommended to set a delay of at least 1 second to prevent accidentally turning off the transmitter.
Owner ID - Custom registration ID for users with ISRM modules only.
Timezone - The offset of the time used by the transmitter from UTC. Can be configured in 15-minute increments.
Adjust RTC - Adjust the transmitter's real-time clock to match the time determined by GPS.
GPS Coordinates - The format of displayed GPS coordinates.
Country Code - Used by certain RF modules to ensure compliance with local RF regulations. Options are USA, Japan, Europe.
Voice Language - Language of the voice pack. This setting and the voice pack folder on the SD card must match for sounds to play.
Units - Measurement units. Options are Metric or Imperial.
PPM Units - Precision level for displaying PPM values. Options are 0.- or 0.0
Play Delay (switch middle position) - Minimum time (in milliseconds) a switch must be in the middle position for a special function to be activated. This is used to prevent the middle position of a 3-position switch from being activated when switching from low to high position.
USB Mode - Set the default action when a USB cable is plugged into the USB data port and the transmitter is turned on. Options are: Ask, Joystick, Storage, and Serial.
Default Channel Order - Default channel order for new models and the trainer screen. Letters represent: A = Aileron, E = Elevator, T = Throttle, R = Rudder. Changing this setting does not affect existing models. On a ground station, letters represent S = Steering, T = Throttle.
Rotary Encoder Mode - Set the rotation direction of the knob. Options are: - Normal (default)
- Reverse = Reverse the direction of the knob
- Vertical Reverse, Horizontal Normal = Vertical reverse, horizontal normal
- Vertical Reverse, Horizontal Alternate = Vertical reverse, horizontal alternate (reversed)
- Vertical Normal, Edit Reverse = Vertical normal, edit reverse (reversed when editing text)
Mode - Stick mode the transmitter will use. Defined by the action performed by the left stick. Options are:
3.6 Enabled Features
The Enabled Features section in the transmitter settings allows you to configure the global settings visible in the transmitter settings and model settings areas in EdgeTX. The configuration settings for the active model will be displayed to the right of the checkboxes. Model configuration will override global configuration.
4. Global Functions
Global Functions are special functions that apply to all models on the radio. They are configured exactly the same way as the model's Special Functions, and the available functions are the same as well.
Pressing the [PAGE>] button will take you to the Trainer screen
5. Trainer Functions
The Trainer screen in the radio settings is used to configure how the transmitter in master mode handles the signal from the transmitter in slave mode. It includes the following configuration options.
The trainer screen in radio settings:
For the four main control inputs (Aileron, Elevator, Throttle, Rudder), the following options can be configured (from left to right on each line).
Mode - How the transmitter in master mode handles the signal from the transmitter in slave mode.
- Off - Use the stick values from the transmitter in master mode - Do not use the input from the transmitter in slave mode.
- += Add the stick values from both transmitters in master and slave modes.
- := Replace the stick values from the transmitter in master mode with those from the transmitter in slave mode. (Default)
- Weight - Use the percentage of stick travel from the transmitter in slave mode. Use negative values to reverse the stick direction.
- Source Channel - The channel from the transmitter in slave mode is mapped to the control input.
Multiplier - This value changes the weight of all sticks.
Calibrate - Set the center stick value for the transmitter in slave mode.
VI. Hardware
The Hardware screen is where you configure specific radio hardware settings. It displays all physical hardware objects (sticks, knobs, switches) and allows you to modify them.
You can also calibrate sticks and knobs, and perform other configuration options here:
6.1 Calibration
To calibrate your physical radio controls (sticks, knobs, sliders, and 6-position switches), highlight the [Calibration] option and press the [Enter] button. The radio will guide you through the calibration steps.
Important
For gimbal calibration, use left-to-right and up-down movements, not circular motions! Also, use normal pressure at the endpoints. Excessive endpoint pressure will cause gimbal calibration errors. Don't forget to calibrate your 6-position switches either!
6.2 Input, Stick, Knob, and Switch Button List
Select an axis, knob, or switch row from the list to add a 3-character label to the control and change the control type as needed. Additionally, you can reverse the direction of a knob by selecting ->.
6.3 Other Hardware Configuration Options

Battery Calibration - Set this value to match the transmitter battery voltage. This ensures the displayed battery voltage is accurate.
RTC Battery - The current voltage of the RTC battery. The RTC (Real-Time Clock) battery maintains the radio's date and time accurately even without the main radio battery.
Check RTC - When enabled, checks the RTC battery on startup and warns you if the battery voltage is low.
Audio Mute - When enabled, mutes the transmitter until sound needs to be played. This prevents interference noise from high-power TX modules from coming through the transmitter speaker.
Internal RF Type - Select the module type for the internal module slot. Options are: Multi, XJT, ISRM, CRSF. When selecting CRSF, you can also select the baud rate. You can read more about baud rates here.
Sampling Mode (External RF) - Options are Normal and OneBit. Most users should use the default setting Normal. Only users of X9D+ and X7 radios may want to use OneBit mode.
6.4 Bluetooth
Mode - The mode that the Bluetooth module will use. Options are:
- --- - Off
- Telemetry - Used for sending telemetry data via Bluetooth.
- Trainer - Used for Bluetooth trainer mode
After selecting a mode, you will see the following information: - PIN Code - The PIN code of the Bluetooth device in the radio (only visible in Telemetry mode)
- Local Address - The identification address of the Bluetooth device in the radio.
- Remote Address - The identification address of the Bluetooth device that the radio is connected to.
Name - The name that the Bluetooth device will display.
Serial Port - Displays a list of available auxiliary serial ports that can be configured and used. The listed ports are based on the ports available in specific radio hardware. The ports listed below are examples only and may not exist in your radio. AUX1- The first available auxiliary serial port can be configured with the following options:- Off - Disabled. Telemetry Mirror - The same telemetry data sent to the external module slot is also sent to the serial port.
- Telemetry Input - Receive telemetry data via the serial port. SBUS Trainer - Connect trainer and student radios via the serial port.
- LUA - Send/receive data to/from Lua scripts.
- GPS - Receive GPS telemetry data via the serial port.
- CLI - Send commands to the radio via the command line.
- USB-VCP - Virtual COM port. This is one of the options most radios provide when connecting the radio to a PC. Typically set to 'CLI' for radios with internal ExpressLRS RF modules for firmware updates.
ADC Filter - Enable or disable the ADC filter. This filter can also be enabled/disabled per model in the model settings.RAS- (formerly SWR) Reflected antenna signal. The lower the number, the better. A 1:1 ratio is theoretically the best. Not all RF protocols support this.
6.5 Debug
The Debug section allows you to test and debug analog controls and buttons.
Debug Analog Screen:
Debug Keys Screen:
Debug Analog - These screens will display the data from your analog controls (sticks, sliders, knobs, 6-position switches). There are two views - Calibrated Analog, Raw Analog (5Hz).
Debug Keys - This screen will display the digital data from your buttons, switches, trims, and rotary encoders (knobs).
Press the [PAGE>] button to go to the Version screen.
VII. Version
7.1 Version Information
The Version screen displays information about the currently used EdgeTX version:
- FW - Firmware name
- VERS - Firmware version
- NAME: Firmware code name
- DATE - Date and time the firmware was compiled
7.2 Firmware Options
To see the build options enabled at compile time, highlight the [Firmware Options] and press the [Enter] button.
7.3 Module / RX Version
To see information about the active RX modules for the currently selected model, highlight the [Module / RX Version] option and press the [Enter] button.
————This article is referenced from the EdgeTX user manual: https://zkl2333.gitbook.io/edgetx-user-manual/bw-radios/radio-settings