Happymodel Super F405HD ELRS 3 in 1 AIO Flight Controller – 20A 3–4S with Built-in ELRS & DJI Plug

Powerful. Integrated. Plug-and-play.

The Happymodel Super F405HD AIO is a high-performance all-in-one flight controller designed for 3–4S FPV whoops and micros. With a powerful STM32F405 MCU, integrated 20A ESC, and built-in ExpressLRS 2.4GHz receiver, this board delivers both simplicity and performance. It even includes a 6-pin plug for DJI HD systems, making it a perfect choice for HD digital FPV builds.

Bigger MOSFETs allow continuous 20A current (25A burst), pre-installed Bluejay firmware, and built-in sensors (barometer, blackbox, current/voltage meters) make this board a feature-packed solution for serious pilots.

Why Pilots Love It

• All-in-one solution — FC + ESC + ELRS RX + barometer + blackbox.
• HD ready — 6-pin DJI HD socket, plug-and-play.
• Reliable power — 20A continuous / 25A burst ESC with Bluejay firmware.
• Advanced sensors — BMP280 barometer + 8 MB blackbox.
• ExpressLRS built in — Serial 2.4 GHz receiver with up to 500 Hz packet rate.

Quick Specs

Flight Controller:

• MCU: STM32F405RGT6 (168 MHz, 1 MB Flash)
• Gyro: ICM42688 (SPI)
• Mounting: 25×25 mm
• Firmware Target: BETAFLIGHTF4
• Blackbox: 8 MB
• Barometer: BMP280

ESC (4-in-1):

• Firmware: Bluejay 0.19.2 (DSHOT150/300/600)
• Current: 20A continuous, 25A peak (5s)
• Power: 3–4S LiPo/LiHV (11–17.4 V)
• MCU: EFM8BB21

ELRS Receiver:

• Protocol: CRSF
• Packet Rate: 25–500 Hz
• Default Firmware: ExpressLRS v3.0.1
• Antenna Connector: IPEX

Other Features:

• Built-in voltage/current sensors (scale 110 / 470)
• DJI HD 6-pin socket

What’s in the Box

• 1 × Happymodel Super F405HD ELRS AIO Flight Controller (20A)
• 1 x ELRS T Antenna
• 1 x XT30 Lead
• 4 x Mounting gummies
• 4 x Motor Plugs

In short: The Super F405HD ELRS AIO is an all-in-one powerhouse for 3–4S whoop and micro builds. With HD compatibility, built-in ExpressLRS, and 20A ESCs, it’s the perfect board for both analog and digital setups.