HDZero Halo Mini Flight Controller (ICM42688)

The HDZero Halo is a high-performance flight controller built around the powerful STM32H743 MCU, designed for serious FPV racing and freestyle.

It features an integrated true diversity ExpressLRS (ELRS) receiver with Gemini mode, using dual receivers on different frequencies for exceptional link stability. A built-in TXCO ensures consistent RF performance even in high-temperature conditions.

Designed for clean, efficient builds, the Halo combines FC and ELRS into one board—reducing cost, weight, and wiring complexity. Its low-profile layout is optimized for stacking with the HDZero Race V3 VTX, creating a compact and durable setup.

Key Features:

• STM32H743 (480MHz) for maximum processing power
• Built-in dual-antenna ELRS (Gemini mode, 2.4GHz)
• TXCO for stable signal performance in extreme conditions
• Solderless design with plug-and-play ESC and VTX connections
• Dedicated 9V/3A BEC for VTX and 5V/4A for peripherals
• Clean LED integration (parallel or addressable)
• No analog OSD for reduced size and optimized digital builds

Design & Compatibility:

• Optimized for HDZero Race V3 VTX stacking
• Compact 20×20 mounting (29×30.5mm board size)
• Supports 3S–8S input

A compact, all-in-one solution delivering top-tier performance, reliability, and ultra-clean builds for competitive FPV pilots.