Hardware Requirements for EdgeTX¶

Color screen radios¶

MCU: presently only STM32F429BI and STM32F439BI with 2 MB flash are supported. Running at 168 MHz. Support for STM32F7/H7 MCUs is planned from EdgeTX v3 onwards, whereas H750 will be the first supported H7 MCU.
SDRAM with minimally 8MB
SD/microSD card slot or embedded SD NAND (e.g. XTX XTSD04G, minimally 512 MByte). Connectivity via SDIO preferred.
Color display with minimally 480x272 pixels. Presently supported resolutions 480x272, 480x320 and 320x480 pixels. With EdgeTX v3, 800x480 pixel support is planned.
Either touch-screen or keys for navigation, or both. Presently supported touch-screen controllers: GT911, FT6236, CST836U If no touch-screen is available, minimally, Menu, Enter, Return/Exit, Up, Down, Page and two horizontal trim buttons should be availabe. Up/Down can be substituted with an encoder/roller.
Display connectivity via RGB565, future support for MIPI-DSI is planned for EdgeTX v3.
Present display controllers supported: internal STM32F4, ST7796S, HX8357D, ILI9481, ILI9486, ILI9488, NT35310.
possibility to flash the firmware via USB-DFU (with or without dedicated DFU button)
constantly enabled energy source for the real-time-clock
possibility to power down the radio from main microcontroller
possibility to sample the voltage of the main battery
Neopixel RGB LEDs only on PWM capable pins with DMA support
Serial-Wire-Debug header. Either pads for 2x5 pin 0.05" header

(mandatory are GND, SWDIO, SWCLK and VTref. SWO, TDI and nRESET are optional)

or full-ETM trace header with 2x10 pin 0.05" header:

USB-C device mode connection
For radios with an internal module, lines to put the module into flashing mode to perform pass-through flashing
Unused GPIO pins shall be connected with a 10k resistor either to GND or VCC. The initial hw revision of a radio shall have them tied to GND, further revision shall use one or multiple of those pins to mark different hw revision of the radio to allow auto detection of the radio version or variant.

Display backlight control via PWM - connection to hw-PWM capable pin on the MCU
Gimbals with either analog, PWM (e.g. TLE4998P3), SPI ADC (e.g. ADS7952) or UART communication
Switches as digital or analog inputs
haptic vibrator, via binary or PWM output
support for additional key navigation input. Supported keys: Enter, Return, Page>, Page<, Up/Down, System, Model, Tele.
support for encoder/roller user input
Audio output via STM32 integrated DAC or via SPI codec (e.g. VS1053B is already supported)
Explicit audio volume control, e.g. via I2C, SPI or further DAC output
Explicit audio mute pin
in case of integrated charging circuitry/circuitries, feedback to main MCU about charging status of each charger
for external RF module bay support: either JR-micro or JR-nano bay
If trainer socket present: in/out connected to hw-PWM capable pins
GPIO extenders with I2C or SPI bus connectivity can be used for digital I/O. In case GPIO extenders are used as inputs, the interrupt output of the GPIO extender shall be connected to an input interrupt capable pin of the MCU. The interrupt lines of multiple GPIO extenders may be logically connected to the same MCU input line.
SPI flash
I2C EEPROM
Bluetooth module via UART
IMU (e.g. LSM6DS33)
SpaceMouse module

MCU: STM32F2 and STM32F4 with minimally 512 kByte flash (for new radios only STM32F4 with minimally 1 MB flash)
STM32F2 running at 120 MHz, STM32F4 running at 168 MHz
SD/microSD card slot or embedded SD NAND (e.g. XTX XTSD04G, minimally 512 MByte)
Monochrome display with either 128x64 pixels or 212x64 pixels.
possibility to flash the firmware via USB-DFU (with or without dedicated DFU button)
constantly enabled energy source for the real-time-clock
Keys to navigate the menus. Minimally, Menu, Enter, Return/Exit, Up, Down, Page and two horizontal trim buttons should be availabe. Up/Down can be substituted with an encoder/roller.
possibility to power down the radio from main microcontroller
possibility to sample the voltage of the main battery
Neopixel RGB LEDs only on PWM capable pins with DMA support
Serial-Wire-Debug header. Either pads for 2x5 pin 0.05" header

(mandatory are GND, SWDIO, SWCLK and VTref. SWO, TDI and nRESET are optional)

or full-ETM trace header with 2x10 pin 0.05" header:

USB-C device mode connection (minimally for new radios)
For radios with an internal module, lines to put the module into flashing mode to perform pass-through flashing
Unused GPIO pins shall be connected with a 10k resistor either to GND or VCC. The initial hw revision of a radio shall have them tied to GND, further revision shall use one or multiple of those pins to mark different hw revision of the radio to allow auto detection of the radio version or variant.

Display backlight control via PWM - connection to hw-PWM capable pin on the MCU
Gimbals with either analog, PWM (e.g. TLE4998P3), SPI ADC (e.g. ADS7952) or UART communication
Switches as digital or analog inputs
haptic vibrator, via binary or PWM output
Audio output via STM32 integrated DAC
Explicit audio volume control, e.g. via I2C, SPI or further DAC output
Explicit audio mute pin
in case of integrated charging circuitry/circuitries, feedback to main MCU about charging status of each charger
for external RF module bay support: either JR-micro or JR-nano bay
If trainer socket present: in/out connected to hw-PWM capable pins
GPIO extenders with I2C or SPI bus connectivity can be used for digital I/O. In case GPIO extenders are used as inputs, the interrupt output of the GPIO extender shall be connected to an input interrupt capable pin of the MCU. The interrupt lines of multiple GPIO extenders may be logically connected to the same MCU input line.
SPI flash
I2C EEPROM
Bluetooth module via UART
IMU (e.g. LSM6DS33)