receiver. It has five serial ports (UART1, UART2, UART3, UART4, UART6), one I2C port, and one SBUS interface (SBUS uses RX2 serial port). The built-in ELRS receiver is the UART1 port, and there is a WS2812 LED on board, with a reserved WS2812 interface. Built in black box 8MB and barometer, with buzzer interface and camera interface. A 5V powered camera interface is reserved on the board.


Flight control parameters:

CPU: STM32F405 

Gyro/accelerometer: BMI270

OSD: AT7456E

Barometer: SPL06

Black box: 8MB

IIC: Support

BEC: 5V

UART: UART1 (ELRS), UART2 (external RC), UART3, UART4, UART6

USB: micro USB

Size: 25.5 * 25.5MM M2

Receiver: ELRS (CRSF), TBS (CRSF), SBUS, IBUS, DSM2, DSMX

Support programmable LEDs such as WS2812

Support buzzer

Built-in voltage and current sensors

Flight control firmware: Betaflight_ 4.3.0_ STM32F405.HEX (JHEF405PRO)

Weight: 3.3 grams

ELRS parameters:

Frequency: 2.4GHZ

Work Agreement: CRSF (Betaflight)

Firmware: JHEMCU_ EP24S_ 2400_ RX-3.0.0.bin

ELRS receiver indicator status:

Double flashing: Code matching mode

Slow flashing: no transmission signal received

Always on: Received transmission signal

ELRS RX parameters:
Frequency: 2.4GHZWorking Agreement: CRSF (Betaflight)
Firmware: DIY_2400_RX_ESP8285_SX1280
ELRS receiver indicator status:
Double flash: code matching mode
Slow flashing: No transmission signal received
Steady on: Received transmit signal

Linking steps:
1. Connect USB to power the flight controller. After inserting the USB for the first time, disconnect the USB as soon as the LED on the receiver turns off. Repeat the operation twice, when the USB is inserted for the third time, the LED will start to flash double, and the receiver will enter the code matching mode.


ESC parameters:
Support PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600
Input voltage: 1S-2S Lipo
Continuous current: 5A
Firmware: BLHELI_S S_H_50_REV16_7.HEX

Packing list:
GSF405A board *1
2.4G antenna *1
2.0MM plug cord *1
470UF/10V capacitor *1
M2*6.5MM shock-absorbing ball *4
2S series board *1