Flywoo GOKU HEX GN405 HD 20A Stack V3 with ELRS

The Flywoo GOKU HEX GN405 HD 20A Stack V3 is a highly integrated flight controller and 6-in-1 ESC combo engineered specifically for micro hexacopters. Operating on a compact 16x16mm footprint, this stack delivers up to 20A per channel to power lightweight six-motor cinematic or long-range builds like the Explorer LR Hex. The flight controller is HD-ready, featuring dual BECs and a dedicated plug-and-play connector to interface cleanly with digital VTX units such as DJI, Walksnail, or HDZero without complicated soldering.

Key features

• Six-channel 20A continuous ESC output built natively for micro hexacopters

• Integrated ELRS receiver to simplify wiring and minimise build weight

• HD-ready architecture with a direct plug for digital video transmitters

• High-performance STM32F405 processor for robust handling of 6-motor mixer calculations

• Space-saving 16x16mm mounting pattern designed for tight micro frames

Specifications

• MCU: STM32F405

• Gyro: ICM42688P

• Continuous Current: 20A (x6)

• Input Voltage: 2-4S LiPo (ESC); FC accepts 2-6S

• BEC: 5V 2A, 3.3V 0.5A

• Barometer: DPS310

• Blackbox: 16MB

• Analog OSD chip: none

• UARTs: 6

• USB: Type-C

• ESC MCU: BB21F16G, DShot150/300/600

• Mounting Size: 16x16 mm (M2)

• Receiver: Onboard ELRS

• Receiver details: 2.4 GHz with TCXO

• Size: FC 25 x 23 x 8 mm; ESC board 33 x 35 mm

• Weight: FC 3 g; FC and HEX ESC 9.4 g

• Supported Firmware: Betaflight

With an integrated ELRS receiver and all the necessary outputs for six motors and digital HD video, this stack substantially reduces build complexity and wire clutter in sub-250g hexacopter projects.