Flywoo GOKU HEX GN405 Nano HD 20A Stack V3 FC/ESC Stack, TCXO ELRS 2.4G, O3/O4 Plug&Play

FLYWOO

$59.99 USD

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Options GOKU HEX BS 6-IN-120A ESC V3 GOKU HEX GN405 Nano HD 20A Stack V3 GOKU GN405 Nano HD FC V3 w/ TCXO ELRS

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Overview

The Flywoo GOKU HEX GN405 Nano HD 20A Stack V3 is a compact FPV flight controller (FC) and ESC stack with an integrated TCXO ELRS 2.4G receiver. It uses a 16x16 mounting pattern and a USB Type-C port, and supports direct plug-in connection for DJI O3/O4 Air Unit installation while remaining compatible with QUAD/HEX builds via an FC/ESC pin-header interface.

Key Features

16x16 mounting holes, compact design
Built-in TCXO ELRS 2.4G receiver (ELRS port is UART6)
Universal USB Type-C interface
Built-in barometer
16MB black box
Direct FC/ESC connection (pin connector; no ribbon cable required)
Direct plug-in for DJI O3/O4 Air Unit

Power note: O4 Lite can handle a max voltage of 1-3S. When using a 4S battery, an extra 5V BEC is needed.

Specifications

Flight Controller (Flywoo GOKU GN405 Nano HD FC V3 w/ ELRS 2.4g 16x16)

MCU	STM32F405 BGA
Gyro (SPI)	ICM-42688P (SPI)
IMU (Gyro)	ICM42688P
OSD	No
Barometer	DP310
Black Box	16MB
USB Port Type	Type-C
UARTs	UART1, UART2, UART3, UART4, UART5 (SBUS), UART6 (ELRS)
Input Voltage	7.4V - 24V / 2 - 6S LiPo
BEC	5V 2A / 3.3V 0.5A
Size	25mm x 23mm x 8mm
Hole Position	M2 16 x 16mm
Weight	3g (FC), 7.8g (FC+20A), 9.4g (FC+20A HEX), 6.5g (FC+35A)

ESC Options (as specified)

Version	Model Name	ESC MCU	Power LED	Continuous Current	Input	Supported Protocols	Size	Weight
20A ESC (QUAD)	GOKU BS 20A ESC w/ LED V3 16x16	BB21F16G	Yes	20A	2-4S LiPo	PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600	27 x 33mm board, 16mm mounting holes (M2)	4.5g
35A ESC (QUAD)	GOKU BS 20A ESC w/ LED V3 16x16	BB21F16G	No	35A	2-4S LiPo	PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600	27 x 33mm board, 16mm mounting holes (M2)	3.6g
20A ESC (HEX)	GOKU HEX BS 6-IN-1 20A ESC w/ LED V3 16x16	BB21F16G	No	20A	2-4S LiPo	PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600	33 x 35mm board, 16mm mounting holes (M2)	6.4g

Additional ESC details (from feature graphics)

20A QUAD version: built-in 20A BL_S 4-in-1 ESC; supports BLHeli / BLHELI_S; input voltage 2-4S LiPo; continuous current 20A.
20A HEX version: built-in 20A BL_S 6-in-1 ESC; supports BLHeli / BLHELI_S; input voltage 2-4S LiPo; continuous current 20A.
35A QUAD version: built-in 35A BL_S 4-in-1 ESC; supports BLHeli / BLHELI_S; input voltage 2-6S LiPo; continuous current 35A.
LED orientation note: red light faces the rear; blue light faces the front.
TCXO reference shown: 26.000 MHz.

Pinout labels (layout graphic)

Top pads/labels: M6, M5, M4, M3, M2, M1, CUR, GND, BAT+
Top signal labels: RX1, TX1, SDA, SCL, RX4, TX4, 4.5V, GND
Bottom pads/labels: VBAT+, GND, TX3, RX3, GND, SBUS(5), +5V, GND, LED, BZ-, +5V, TX2, RX2, TX6, RX6
Additional board label shown: F405NANO PRO (pins shown: RX6, TX6, RX2, TX2, +5V, BZ-, LED, GND, +5V)

Applications

Space-saving micro drone builds requiring an integrated ELRS 2.4G receiver
QUAD or HEX configurations using compatible plug-and-play ESC options
Digital FPV builds using DJI O3/O4 Air Unit direct plug-in interface

For build compatibility questions (air unit, voltage, UART mapping, or ESC version selection), contact support at https://rcdrone.top/ or email support@rcdrone.top.