G-FF4 FPV FC
The G-FF4 FPV flight controller is designed for fixed-wing, UAV, and VTOL applications. Powered by the STM32F405 processor with a high-precision IMU and integrated sensors, it delivers accurate flight control.
The G-FF4 supports open-source firmware including Betaflight and INAV. Its compact design fits small frames perfectly.
Product Information
Hardware Summary
| Item | Description |
|---|---|
| MCU | STM32F405RGT6, 168 MHz, 192KB RAM, 1MB Flash |
| IMU | ICM-42688-P |
| Barometer | DPS368 |
| Compass | IST8310 |
| OSD | AT7456E (optional) |
| Blackbox (Data Logger) | NAND Flash 2Gbit |
| CAN | 1x CAN Bus |
| UART | 6x UART |
| PWM Outputs | 9x PWM (8x motor outputs; 1x customize) |
| ADC Inputs | 2x ADC (1x battery voltage; 1x battery current) |
| I2C Ports | 1x I2C |
| LED Indicators | 3 colors LED indicator |
| USB | USB Type-C with DFU key on board |
| Static Power Consumption | 110mA @ 5V |
| Input Voltage | 3S~6S Lipo input voltage with voltage monitoring |
| BEC 9V Output | BEC-2 Output: 9V/3A |
| BEC 5V Output | BEC-1 Output: 5V/3A |
| BEC 3.3V Output | Linear Regulator, Continuous current: 300mA |
| Operating Temperature | 0°C~55°C |
| Mounting | 30.5 x 30.5mm, M4 hole |
| Dimensions | 36 x 36 x 8 mm |
| Weight | 10g |
Pin Definition
Wiring Overview
The diagram below shows G-FF4 and the connections to its peripherals.
| Interface | Function |
|---|---|
| ESC & Ext ESC | Supports a quadcopter (X4) with one ESC plug and an octocopter (X8) with two ESC plugs |
| GPS | Connects to a GPS sensor |
| SBUS | Connect to a SBUS receiver |
| I2C | Connects to external I2C sensors such as a compass or airspeed sensor |
| UART1, 2, 4 | Connects to radio telemetry, ELRS receivers, or LiDAR sensors |
| CAN | Connects to CAN devices such as a CAN PMU |
| VIDEO IN | Connects to an analog FPV camera |
| VIDEO OUT | Connects to an analog VTX |
| O3 Air | Connects to the DJI O3 Air Unit |
| USB | Used for firmware loading and configuration via USB Type-C |
| Buzzer | Connects to a buzzer |
| BOOT Button | Forces the flight controller into DFU mode when held during power-up to reflash firmware |