Description

The HDZero Gamma HD-Ready AIO is built on the STM32G473 MCU, using the 25.5x25.5mm Whoop/Toothpick pattern and optimized for 2.5–4 inch drones. An integrated serial 2.4GHz ExpressLRS receiver eliminates the need for a separate RX, reducing soldering, saving space, and making builds cleaner and easier.

Designed specifically for digital video systems, the Gamma includes a standard digital VTX plug and a protected 8V/3A high-power BEC to reliably support modern digital transmitters. A secondary 5V/3A rail powers LEDs, cameras, and other peripherals.

The onboard 32-bit 4-in-1 AM32 ESC delivers clean, stable power to the MCU and absorbs voltage spikes during rapid throttle changes, reducing the risk of brownouts, MOSFET failures, and motor damage. Each motor output supports 45A continuous with 60A bursts, providing ample performance for high-powered micro builds.

Purpose-built for digital FPV and drone soccer, the Gamma removes the analog OSD chip to save space and pairs ideally with the HDZero Whoop V2 VTX for a compact, low-profile digital stack.

Browse the rest of our Whoop AIO Boards and our HDZero selection!

Features

• Integrated serial 2.4GHz ExpressLRS receiver eliminates the need for a separate RX, reducing soldering, saving space, and making builds cleaner and easier.
• Standard digital VTX plug and protected 8V/3A high-power BEC reliably support modern digital transmitters.
• Onboard 32-bit 4-in-1 AM32 ESC delivers clean, stable power to the MCU and absorbs voltage spikes during rapid throttle changes.
• Each motor output supports 45A continuous with 60A bursts, providing ample performance for high-powered micro builds.
• No analog OSD chip saves space and pairs ideally with the HDZero Whoop V2 VTX for a compact, low-profile digital stack.

Specifications

Flight Controller

• CPU: STM32G473 (170MHz)
• Gyro: ICM42688
• Black box: No
• I2C Pads: Yes
• UART Pads: TX1/RX1, TX3/RX3, TX4/RX4
• ESC Telemetry: RX4
• VTX MSP UART: TX1/RX1
• Buzzer Pads: Yes
• LED Strip Control: Yes
• USB: Type-C
• Analog OSD: No
• FC Firmware: Betaflight: HDZERO_GAMMA

ESC

• CPU: AT32F421 (120MHz)
• Telemetry: Supported
• Input Signal: DSHOT 150/300/600, MultiShot, OneShot
• Max Current: 45Ax4 (Continuous) / 60Ax4 (Burst)
• Current Sensor: Scale = 107, offset = 0
• ESC Firmware: AM32 2.18
  
  • Target: AM32_HDZERO_HALO_F421_2.18.hex

ELRS Receiver

• Chip Set: ESP32 + SX1280
• FC UART: TX2/RX2
• RF Frequency: 2.4GHz
• Max TX RF Power: 10mW
• Antenna Interface: 1x U.FL
• ELRS Firmware: HDZero 2.4GHz | HDZero 2.4GHz AIO RX

BEC

• 5V: 3A for LED strips and other peripherals
• 8V: 3A for digital video transmitter

Dimensions

• Power Supply: 3S-6S
• Size: 33x33mm with 25.5x25.5 M2 mounting holes
• Weight: 8.4g

Includes

• 1x HDZero Gamma AIO
• 5x M2 Rubber Grommet(5.6mm)
• 1x ELRS T-sharp short antenna (40mm) 
• 1x XT30 cable with 330uF/35V capacitor (70mm)