Holybro Kakute F4 V2.4 Flight Controller User Manual
- June 13, 2024
- Holybro
Table of Contents
Holybro Kakute F4 V2.4 Flight Controller
Overview
The Holybro Kakute F4 V2.4 Flight Controller includes plug-and-play DJI O3 HD camera plug, 4in1 ESC ports, barometer, OSD, 5x UARTs, logging capability with built-in flash, 5V and 9V/3A BEC, easy soldering layout and much more.
The Kakute F4 V2.4 is DJI HD ready. It has an easy plug-and-play port with an on-board 9V/A regulator designed to power your HD video transmitter like DJI O3 Air Unit & Caddx Vista while supporting analog system. It has 5x dedicated UART ports with built-in inversion for peripherals. It is also ready for autonomous flight with the on-board barometer. There are LED & buzzer pad, I2C pad (SDA & SCL) for external GPS/Magnetometers
Specification:
- MCU – STM32F405
- IMU – MPU6000
- Barometer – BMP280
- OSD – AT7456E
- 5x UARTs (1,3,4,5,6,)
- 128 Mbit Dataflash chip
- Battery input voltage: 2S-8S
- BEC 9V/3A – Optimized for DJI O3 Air unit
- BEC 5V/2A
- 7x PWM Outputs (6 Motor Output, 1 LED)
- Supports serial receivers (SBUS, iBus, Spektrum, Crossfire, ESLR).
- Mounting – 30 x 30mm, Φ4mm hole with M3 Grommets
- Dimension – 37x37mm
- Weight – 7g
- JST-SH1.0_8pin port (For 4in1 ESCs)
- JST-SH1.0_6pin port (For DJI/Caddx HD System and other VTX)
Pinout Diagram
| Pin | Function |
|---|---|
| Buz- | Piezo buzzer negative leg |
| Led | WS2812 addressable LED signal wire |
| SP | FrSky SmartPort Telemetry (UART 1, inverted) |
| R3, T3 | UART3 RX and TX (automatic inversion) |
| R4, T4 | UART4 RX and TX (uninverted) |
| R5 | UART5 RX (uninverted) |
| R6, T6 | UART6 RX and TX (uninverted) |
| Scl | I2C SCL pin |
| Sda | I2C SDA pin |
| Rsi | Analog (0-3.3v) RSSI input |
| Idet | Current Sensor (0-3.3v) input |
| 3V3 | 3.3v output (200 mA max) |
| 5v | 5v output (1.0 A max) |
| M1 to M4 | Motor signal outputs |
| M5 to M6 | Motor signal outputs(need to resource) |
| RX | UART 5 RX (uninverted, for ESC Telemetry) |
| VO | Video output to video transmitter |
| VI | Video input from FPV camera |
| Boot | Bootloader button |
| G or Gnd | Ground |
| B+ | Battery positive voltage (2S-6S) |
JST SH 8 Pin Port
| Pin | Function |
|---|---|
| 1 | Battery Voltage |
| 2 | R5 (for ESC telemetry) |
| 3 | Ground |
| 4 | Current Sensor Input |
| 5 | M1 |
| 6 | M2 |
| 7 | M3 |
| 8 | M4 |
The 8PIN SH connector can be used to connect directly to compatible 4-in-1 ESCs. However, you might need to use the SH connector even if you are not using a 4-in-1 ESC, because some pins are only present in the SH connector, not as pads on the board.
JST SH 6 Pin Port
| Pin | Function |
|---|---|
| 1 | R3 |
| 2 | G |
| 3 | R6 |
| 4 | T6 |
| 5 | G |
| 6 | 9V |
The 6PIN SH port available on the board makes it much more convenient for you to connect HolyBro Kakute F4 V2 to the DJI O3 Air Unit or Caddx Vista or other Vtx, for both signal and power supply.
Wiring diagram
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>