Overview
TheHDZero Halo Mini Flight Controller is a compact yet powerful FC built for FPV racing and freestyle. Powered by the STM32H743 processor, this 20x20mm flight controller supports up to 8S input, features integrated true diversity ExpressLRS (ELRS) Gemini RX, and offers robust power outputs5V/4A, 9V/3A, and 4.5V/0.5Amaking it a top-tier choice for performance-driven pilots.
Available in MPU6000 and ICM42688 gyro versions, the Halo Mini delivers versatility, exceptional link reliability, and a solder-free build experience.
Key Features
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STM32H743 MCU @ 480MHz for ultra-fast flight performance
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Integrated Gemini mode ELRS diversity receiver (ESP32 + 2x SX1280)
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TXCO crystal oscillator for stable RF performance in high-temp environments
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Built-in 5V/4A, 9V/3A, 4.5V/0.5A BEC outputs for video transmitters, LEDs, peripherals
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Solderless ESC and VTX connectors for quick installation and field repair
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Supports HDZero Race V3 stacking in a low-profile build
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Simplified parallel/serial LED strip wiring
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Clean layout with USB-C, UART, I2C, buzzer, and LED strip pads
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No analog OSD chipfully optimized for digital video systems
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Available with MPU6000 or ICM42688 gyro sensor
Specifications
Flight Controller
| Item | Detail |
|---|---|
| MCU | STM32H743 (480MHz) |
| Gyro Options | MPU6000 / ICM42688 |
| BEC Output | 5V/4A, 9V/3A, 4.5V/0.5A |
| Blackbox | 16MB Flash |
| USB Port | Type-C |
| Analog OSD | No |
| LED Output | Parallel & Serial Supported |
| ESC Telemetry | RX4 |
| UART Pads | TX2/RX2, TX5/RX5, TX7/RX7, TX8/RX8 |
| DJI HDL | RX3 |
| I2C Pads | Yes |
| FC Firmware | Betaflight: HDZERO_HALO |
| Mounting Pattern | 20x20mm (4mm with 3mm grommets) |
| Board Size | 29×30.5mm |
| Power Input | 3S ~ 8S LiPo |
Integrated ELRS Receiver
| Item | Detail |
|---|---|
| Chipset | ESP32 + 2x SX1280 (True Diversity) |
| Protocol | ExpressLRS 2.4GHz |
| Max TX Power | 10mW |
| Antenna Ports | 2x U.FL |
| FC UART Connection | TX1 / RX1 |
| ELRS Firmware | HDZero Halo FC 2.4G Gemini RX |
What’s Included
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1x HDZero Halo Mini Flight Controller
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1x ELRS T-sharp short antenna (40mm)
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1x ELRS T-sharp long antenna (90mm)
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2x ELRS antenna strain reliefs
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1x 8-pin SH1.0 ESC cable (30mm)
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1x 8-pin SH1.0 connector
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5x Rubber Grommet (6.6mm)
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5x Rubber Grommet (8.0mm)
Compatibility & Build Notes
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Ideal for HDZero digital builds designed for low-profile stacking with HDZero Race V3 VTX.
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No analog OSD chip, optimized purely for digital FPV systems.
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Compatible with most 20x20mm stacks; solderless ESC and VTX connectivity simplifies setup.
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Gemini diversity RX offers ultra-stable ELRS links even in RF-challenging environments.
Details
HDZero Halo Mini Flight Controller with H743 chip, ELRS Gemini, dual BEC, compact 20×20 design for advanced FPV performance.
HDZero Halo Mini Flight Controller includes H743 MCU, Gemini 2.4GHz ELRS RX, dual BECs, LED strip support, and solder-free design. Top views show MPU6000 and ICM42688 configurations.
HDZero Freestyle V2 VTX and DJI O4/03 wiring diagrams for freestyle pilots, featuring H743 flight controller with ELRS Gemini.
Integrated Peripherals: ELRS Antenna Mounting, Gemini 2.4GHz ELRS RX, dual independent BECs, 9V/3A for VTX, 5V/4A for LEDs, stable connection, dual antennas.
Flexible LED Strip Connection: Parallel setup with shorted pads; Addressable Serial Connection: Individual LED strips (#1-4) with disconnected pads for distinct control.
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