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JHEMCU GHF745 HD AIO 40A F7 OSD Flight Controller and Built-In AM32 3-6S 4IN1 ESC - 25x25mm

About JHEMCU GHF745 HD AIO

The JHEMCU GHF745 HD AIO is a high-performance all-in-one flight controller designed for demanding FPV freestyle, racing, and long-range builds. Powered by the STM32F745 216MHz processor and the trusted MPU6000 gyro, it delivers outstanding flight stability and fast processing.

Featuring an integrated 40A BLHeli_32 4-in-1 ESC, onboard OSD, Barometer, 8MB Blackbox, dual BEC outputs (5V & 10V), and native HD digital system support, this compact 25.5×25.5mm AIO board simplifies wiring while providing everything needed for modern FPV drones.

Compatible with Betaflight, DJI O3 Air Unit, Walksnail, HDZero, ELRS, Crossfire, SBUS, IBUS, DSMX and more, making it an excellent choice for 3S-6S FPV quadcopters.

Check out our Whoop Style AIO Boards, all FPV Flight Controller Collection and the rest of our JHEMCU Products!

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Top highlights
  • Powered by a 216MHz STM32F745 MCU, delivering fast processing, precise flight control, and smooth performance for freestyle, racing, and long-range FPV drones.
  • Built-in 40A ESC supports 3S–6S LiPo batteries and DShot150/300/600 protocols, providing reliable power delivery, efficient motor control, and a cleaner, simpler build.
  • Features the trusted MPU6000 gyroscope, onboard 8MB Blackbox memory, and an integrated barometer for stable flight performance, accurate tuning, and detailed flight data recording.
  • Includes dedicated support for DJI O3 and other HD digital FPV systems, along with 5V/2.5A and 10V/2A BEC outputs to power VTXs, cameras, receivers, and accessories.
  • Combining the flight controller and ESC in a lightweight 25.5×25.5mm AIO board, it reduces wiring complexity while supporting Betaflight, ELRS, Crossfire, SBUS, IBUS, and other popular FPV systems.
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Specifications:

● Brand name：     JHEMCU

● Model:            GHF745AIO

● MCU：            STM32F745/216MHZ

● IMU:            MPU6000/Gyro/Accel

● OSD：            AT7456E

● Baro：            YES

● Blackbox：         8MB

● Input voltage:    3S-6S（11.5V-26V）

● 5V-BEC：            5V/2.5A ±0.1V 

● 10V-BEC:           10V/2A ±0.1V

● Receiver：          ELRS(CRSF), TBS(CRSF) ,SBUS,IBUS,DSM2,DSMX

● HD：           YES

● USART:           UART1,UART2,UART3,UART4,UART5,UART6

● IIC：           IIC1

● Led_Strip:           YES

● Buzzer:           5V

● ESC signal:        Dshot150，Dshot300，Dshot600

● USB:          Micro USB

● Current port：  YES

● Voltage sensor：YES

● DFU button：   YES

● FC Firmware:     betaflight_4.4.2 JHEF745.HEX

● Size:          33*33MM

● Mounting Hole:25.5*25.5*3MM

● Weight:          7.3g


ESC Specifications:

● ESC Current:      40A/50A

● ESC MCU：        STM32G071

● ESC TYPE:           AM32

● ESC Firmware:   JHEMCU_G071_ESC_Multi_32_9.HEX


Package Includes:

● 1x GHF745AIO -40A

● 1x XT60

● 4x M2 * 6.5MM shock absorber

● 2x 40A-16AWG wire

● 1x O3 connecting line 5P to 6P

● 1x 470UF/35V capacitor

● 1x TYPE-C adapter board

● 4x 28AWG Wire

● 1x Welding practice board

Buyer’s Guide: JHEMCU GHF745 HD AIO 40A F7 OSD 

Building a high-performance 2.5" to 3.5" Cinewhoop, an agile 4" Toothpick, or an ultra-light sub-250g freestyle rig requires an all-in-one flight controller that blends high-frequency processing speed with robust power delivery. The JHEMCU GHF745 HD AIO 40A F7 OSD Flight Controller integrates an advanced STM32F745 MCU, clean dual BEC rails (including a dedicated 10V HD port), and a heavy-duty 40A 4-in-1 ESC into a compact 25.5 × 25.5 mm footprint, providing the computational headroom and electrical stability needed for modern digital HD micro builds.


Pilot Flight Impressions

"Dropping the GHF745 HD 40A AIO into my 3.5-inch DJI O3 Cinewhoop completely transformed stick feel and mid-flight reliability. The F745 processor handles bidirectional DShot and bidirectional RPM filtering with room to spare, which immediately eliminated high-frequency gyro noise and smoothed out the micro-jitters often visible in stabilized HD footage. The dedicated 10V/2A BEC powers the DJI O3 Air Unit reliably with zero video brownouts or line interference during full-throttle punch-outs. Under sustained high-amp dives and aggressive indoor bando maneuvers, the 40A MOSFETs stayed remarkably cool, and having widely spaced solder pads made wiring the motors and digital harness straightforward without bridging pins."


Recommended Ecosystem & Hardware Pairings

● Motors: 1404 to 2204 Stator Brushless Motors (e.g., T-HOBBY Pacer P1804, GEPRC SPEEDX2 2105.5, MEPS SZ2104).

● Propellers: 2.5" to 4" Propellers (e.g., HQ T90MMX3, Gemfan D90, Gemfan 3520 3-Blade, Gemfan 4024 T-mount).

● LiPo Batteries: 3S–6S 550mAh to 1100mAh LiPo/LiHV Packs (e.g., Boslipo P7 850mAh 95C 3S/4S/6S).

● Frames: 2.5"–3.5" Cinewhoop and 3"–4" Toothpick Frames with 25.5 × 25.5 mm mounting (e.g., SpeedyBee Bee35, CineLog35, Crux35).

● Digital HD Systems: DJI O3 Air Unit, Walksnail Avatar HD Mini/Pro, or HDZero Micro VTX.

● Search & Safety: Self-powered micro recovery buzzer (e.g., VIFLY Finder 2 Buzzer).

JHEMCU GHF745 HD 40A vs. T-HOBBY F7 35A

Technical SpecificationJHEMCU GHF745 HD AIO 40AT-HOBBY F7 35A AIOPilot Advantage & Selection
Main Processor (MCU)STM32F745 (216MHz)STM32F722 (216MHz)F745 offers greater pinout flexibility and flash storage capacity over F722.
Continuous ESC Current40A Continuous35A ContinuousGHF745 delivers an extra 5A per motor of thermal headroom for aggressive 3.5"–4" setups.
Input Voltage Range3S–6S LiPo (11.5V–26V)3S–6S LiPoBoth support standard 3S–6S voltages for micro freestyle and cinewhoop builds.
Onboard BEC Outputs5V / 2.5A and 10V / 2A5V / 1.5A (or 9V depending on sub-revision)GHF745 provides dedicated 10V/2A rail specifically engineered for power-hungry HD VTXs.
Mounting Dimensions & Weight25.5 × 25.5 mm (M2) / ~7.3g – 8.5g25.5 × 25.5 mm (M2) / ~8.0g – 8.5gIdentical standard whoop/toothpick mounting footprint for broad frame compatibility.
Hardware UARTsUp to 6 UARTs (UART1–UART6)Up to 4–5 UARTsGHF745 provides ample ports for simultaneous GPS, HD VTX, Receiver, and telemetry hookups.
Primary Application2.5"–3.5" HD Cinewhoops, 3"–4" Fast Toothpicks2.5"–3.5" Whoops, Lightweight 3" CruisersChoose GHF745 for heavy digital payloads; choose T-HOBBY for simplified standard builds.

Selection Summary

● Choose the JHEMCU GHF745 HD AIO 40A if: You are building a 3-inch to 3.5-inch digital HD Cinewhoop or an aggressive 4-inch Toothpick running a DJI O3 Air Unit or Walksnail system. The high-performance STM32F745 MCU, 40A continuous current rating, and dedicated 10V/2A filtered BEC ensure clean video feeds and dependable burst power under heavy loads.

● Choose the T-HOBBY F7 35A AIO if: You want a balanced, dependable flight controller for everyday 2.5"–3.5" whoop cruising and standard freestyle. Its 35A ESC and F722 processing provide proven reliability and straightforward wiring for builds that don't push maximum current draws.

Recommendations:

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