Holybro 11048 Installation and operating instructions

#11048
Kakute F4 V2.3
User Manual & Installation Guide
v1.0

Page | 2 www.holybro.com
Warranty and Return Policy
If you believe that your Kakute F4 is defective, please contact us. If we determine that the board is
defective, it will be repaired or replaced at no charge to you. We may ask you to send your Kakute to
our service center for examination or repair. Shipping costs are your responsibility. Returned items
should include the original packaging and all accessories.
If product is damaged or defective, we will repair or replace it. Refunds are only given when product is
lost by the shipping company. The refund amount is limited to the price of the product. Shipping costs
are never refundable.
Contact us at:
•Email: [e-mail]
•Facebook Page: Holybro
•Facebook Group: Holybro Hobby Official Group

Page | 3 www.holybro.com
Overview
The Holybro Kakute F4 flight controller supports important features of Betaflight/Cleanflight, such as
OSD and Dshot. The faster F4 processor gives room for future feature development: run all features at
the fast 8 kHz PID loop rate, at single-digit CPU utilization! Because of issues with serial inversion, other
F4 boards struggle to support protocols such as FrSky SBUS and SmartPort at the same time. The
Kakute F4 is designed to support all serial protocols at once.
Features
•Supports Betaflight and Cleanflight.
•Betaflight OSD. Change PIDs, adjust common configuration parameters, and change video
transmitter channel and power level, all using your transmitter sticks and goggles.
•High-performance / low-noise IMU. MPU6000 with 6-axis gyro and accelerometer.
•Ready for autonomous flight: Integrated BMP280 barometer and SCL/SDA for use with external
GPS/magnetometer units.
•Dedicated bootloader button for easy firmware flashing.
•Low-profile design fits into even very compact frames.
•Input voltage 7v to 42v. Power the board directly from the flight pack, up to 6S (on “B+” pad
only).
•Automatic voltage monitoring. No need to run a separate vBat wire for voltage monitoring; the
Kakute F4 V2 monitors voltage directly from the battery power lead.
•On-board regulators output 5v at up to 1.0 amps and 3.3v at up to 200 mA to power
peripherals such as receiver, video transmitter, FPV camera, or LED strip.
•On-board regulators output 9v at up to 2A to power DJI VTX.
•6 PIN JST GH connector for DJI VTX.
•Supports BLHeli pass-through for easy ESC upgrade and configuration.
•2 Additional PWM output, can be used for Camera control , motor5 or motor6 after resourced.
Specifications
•MCU: STM32F405RGT6 32-bit processor
•IMU: MPU6000 (SPI)
•Barometer: BMP280
•USB VCP Driver (all UARTs usable simultaneously; USB does not take up a UART)
•5 hardware UARTS (UART1,3,4, 5, 6)
•Supports serial receivers (SBUS, iBus, Spektrum, Crossfire) only. PPM and PWM receivers are not
supported.
•128 Mbit Dataflash chip for Blackbox logging
•Dimensions: 36.8x36.8x8mm
•Mounting Holes: 30.5x30.5mm(M4)
•Weight: 7.4g

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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)

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Pinout Diagram
JST SH 8 Pin Port
JST GH 6 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.
Pin
Function
1
R3
2
G
3R6
4
T6
5
G
6
9V
The 6PIN GH port available on the board makes it
much more convenient for you to connect HolyBro
Kakute F4 V2 to the DJI FPV VTx or Caddx Vista, for
both signal and power supply.
JST GH 6 Pin Port
Pin 1→6
Pin 1→8

Page | 6 www.holybro.com
Wiring diagram
1).Digital HD Camera
2).ESC
HDL
G
RX
G
B+
TX
9V
T6
R6
R3
G
G
HDL
G
NULL
NULL
RX
G
9V
TX
DJI AIR UNIT
CADDX VISTA
JST SH1.0 8Pin-8Pin
M2
M1
M3
M4
GND
TLM
VBAT
CURRE
GND
CURRE
B+
R5
M2
M1
M3
M4

Page | 7 www.holybro.com
3).5.8G VTx
4) .Analog FPV Camera & Buzzer & LED
V
T
G
B+
V
T
G
B+
ATLATL-HV V2
ATLATL-Micro
G >>>GND
V >>>VO
B+>>>B+
T>>>T6
DATA
GND
5V
VID
GND
VCC
+
Camera
Buzzer
LED
DATA>>>LED
GND>>>GND
5V>>>5V
+ >>>5V
- >>>BUZ-
VID >>>VI
GND >>>G
VCC >>>5V

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5).Receiver
CH1 >>>R3
CH2 >>>T3
+5V >>>5V
GND >>>GND
GND >>>GND
VCC >>>5V
SBUS>>>RX3
C
H2
CH1
+5V
GND
SBUS
S.Port
GND
+5V
S.Port >>>SP
TBS Crossfire Receiver
Frsky Receiver