Hummingbird 305 Flight Stack – F722 FC with Built-in ELRS + 80A 4in1 ESC
by NewBeeDrone

The NewBeeDrone Hummingbird 305 Flight Stack is an advanced, high-power electronic core engineered for 5-inch to 10-inch unmanned systems across the hobbyist, academic, and defense sectors. This standard 30.5x30.5mm stack combines a high-speed STM32F722 flight controller running at 216MHz and a heavy-duty 80A continuous 4-in-1 ESC. The flight controller features an integrated 2.4GHz ExpressLRS diversity receiver with dual antennas and an onboard LNA boost, offering high control link quality with reduced latency and reduced wiring hassle. It is built with an ICM-42688 gyro with a dedicated LDO regulator, an SPL06-001 barometer for precise altitude hold, an SD card slot for Class 10 Blackbox telemetry logging, and triple independent BEC outputs (10V @ 2A and dual 5V @ 2A) to seamlessly power digital HD systems like DJI O3/O4, HDZero, and Walksnail, or traditional analog configurations.

Operating on a broad 3S to 8S LiPo input voltage, the included 4-in-1 ESC runs highly efficient AM32 open-source firmware driven by an AT32F421 MCU and integrated gate drivers for smooth throttle linearity. The power distribution architecture utilizes a 6-layer, 3oz copper gold-plated PCB with blind vias to optimize thermal management and electrical conductivity under strenuous conditions. It integrates three high-capacity onboard TVS diodes to deliver over 1.5kW of peak surge protection, eliminating the need for bulky external surge components, while corner-mounted capacitor pads allow neat filtering add-ons for heavy-lift long-range airframes. Both the flight controller and ESC come with factory-applied protective nano-coating to defend against environmental exposure, making this stack an elite solution for FPV drone racing, university robotics research, commercial sUAS manufacturing, and rugged military or government close-range reconnaissance programs.

Technical Specifications

• Flight Controller MCU: STM32F722 @ 216MHz

• Flight Controller Gyro: ICM-42688 with independent low-dropout (LDO) regulator

• Onboard Barometer: SPL06-001

• Integrated Receiver: ExpressLRS (ELRS) 2.4GHz Diversity Receiver with TCXO Oscillator and Low Noise Amplifier (LNA)

• Receiver RF Connectors: Dual MHF3 / U.FL antenna ports

• Firmware Target Compatibility: Betaflight and iNAV (Receiver Target: NewBeeDrone Diversity 2.4Ghz RX V2)

• Blackbox Logging: Onboard MicroSD card slot (Class 10, supports up to 32GB, FAT32 format)

• BEC Regulated Power Outputs: Triple Independent Outputs (10V @ 2A + 5V @ 2A x2)

• Peripheral Connections: 4x UART ports, 1x I2C port, Dedicated analog video input/output pads, LED, and Buzzer pads

• Video Transmitter Support: Plug-and-play ready for analog or digital HD VTX (DJI, HDZero, Walksnail)

• ESC Processor & Firmware: AT32F421 MCU with Integrated Gate Driver running open-source AM32 firmware

• ESC Continuous Current: 80A per channel for 10 seconds

• ESC Burst Current: 100A per channel for 3 seconds

• Battery Input Range: 3S to 8S LiPo (11.1V to 33.6V DC)

• Voltage Surge Protection: 3x High-Capacity Onboard TVS Diodes (Total peak power handling > 1.5kW)

• ESC PCB Composition: 6-Layer, 3oz Copper with Blind Via and Gold Plating

• External Filtering Support: 4x Corner-mounted capacitor solder pads for custom filtering layouts

• Environmental Resistance: Factory-applied protective Nano Coating on both boards

• Mechanical Mounting Layout: Standard 30.5mm x 30.5mm mounting pattern with M3 isolation holes

• Board Physical Footprint: 36x36mm (Flight Controller) / 43x43mm (ESC including motor solder pads)

What Is Included

• (1) NewBeeDrone Hummingbird 305 F722 Flight Controller with Integrated Diversity ELRS 2.4G Receiver

• (1) NewBeeDrone Hummingbird 305 4in1 80A 3-8S AM32 Electronic Speed Controller

• (2) 2.4GHz ELRS Antennas with MHF3/U.FL Connectors

• (1) DJI O3/O4 Plug-and-Play 6-Pin Connection Cable (100mm)

• (1) SH1.0 8-Pin FC-to-ESC Interconnect Cable (96mm)

• (1) SH1.0 6-Pin HD VTX Cable (100mm)

• (1) SH1.0 3-Pin Analog Camera Cable (100mm)

• (3) SH1.0 4-Pin UART Cables (100mm)

• (3) 120mm Silicon 4-Color Solder Pigtail Wires

• (1) Heavy-Duty 14AWG Power Supply Input Cable

• (1) High-Current XT60 Male Power Supply Plug

• (1) 35V 1000uF Low-ESR Filter Capacitor

• (2) Protective Heat Shrink Tubing Sections for Capacitor Insulation

• (10) Vibration-Dampening Silicone M3 Isolation Grommets