HDZero AIO5 Digital Video All-in-One Flight Controller

Specifications

• MCU: STM32F411 (100MHz, 512K Flash)
• Gyro: BMI270
• On board voltage and amperage meters
• Built-in 5A(each) BLHeli_S 4-in-1 ESC
  • MCU: EFM8BB21
  • HV Current: 5A continuous peak 6A (3 seconds)
  • Factory firmware: O_H_5_48_V0.19.2.HEX
  • Dshot600 ready
• Built-in 5.8G HDZero VTX
  • RF output: 25mw/200mW
  • Supported channels: R1-R8, F2/F4, L1-L8
  • UFL connector (ultra-lite linear antenna included)
• Built-in SPI ExpressLRS 2.4GHz receiver
  • Pre-soldered enamel wire antenna
  • Packet rate option: 25Hz/50Hz/150Hz/250Hz/500Hz
  • Telemetry output power: <12dBm
• Built-in 5V 1A BEC
• Flight controller firmware target: CRAZYBEEF4SX1280, configuration file??
• Power supply: 1S battery (2.5V – 4.35V)
• Fully compatible with the popular whoop frames
  • Board size: 28.5x28.5mm with a 25.5x25.5 mounting hole size
  • Weight: 5.7g (without motor plugs), 6.3g (with motor plugs)

Diagrams

Top View

The top view of the HDZero AIO5 board shows the following components:

• ELRS Antenna (Pad)
• VTX FW Connector
• VTX Antenna UFL connector
• Motor 1 (Pads)
• Motor 3 Pads
• FC Orientation
• UART2-RX
• UART2-TX
• LED Strip
• Power LED (Red)
• 1S Battery (NO 2S) (2.5-4.35V)
• DIVIMATH DM5680T D05H24E3 2304
• DIVIMATH DM6300 P4AF81.00C AC 2419
• Motor 2 (Pads)
• VTX LED (Blue)
• C: Video (Yellow), P: Control (White), G: GND (Ground)
• BEC Output (5V/1A)

Bottom View

The bottom view of the HDZero AIO5 board shows the following components:

• Motor 4
• Motor 2
• FC BOOT Button
• DIVIMATH STM32F411CEU6 GQZ2U1BVQ CHN GQ 417
• FC USB (Mini)
• ELRS LED (Green)
• FC LED (Green)
• Motor 1
• Motor 3
• Note: Motor plugs are exclusively available on retail boards.

Included

• 1x HDZero AIO5 board
• 1x Power cable with inverted angle A30 connector
• 4x screws
• 4x rubber grommets
• 1x ultra-lite linear VTX antenna

Installation Notes

ELRS Antenna

A line antenna (¼ wavelength) for the ELRS receiver is pre-soldered and positioned close to the board for low-profile and easy packaging. However, the ELRS antenna needs to be lifted to maintain at least 3 mm of clearance from the board.

Correct Installation: The ELRS antenna is lifted away from the board, ensuring proper clearance.

Incorrect Installation: The ELRS antenna is too close to the board, potentially causing interference.

VTX Antenna

The HDZero VTX integrated into the AIO5 has a specific requirement to prevent video noise caused by the video RF signal being routed back to the onboard power amplifier. The VTX antenna should be mounted outward, not inward, on the board.

Correct Installation: The VTX antenna is mounted outward.

Incorrect Installation: The VTX antenna is mounted inward, potentially causing video noise.

Bind with TX radio

There are two ways to configure AIO for binding:

1. Connect HDZero AIO5 to PC via micro-USB. Open Betaflight and connect to the AIO. Navigate to the "Receiver” tab and click “Bind” to initiate binding mode.
2. Power the HDZero AIO5 (either via USB to PC or a 1S battery). Wait until the ELRS LED turns off, then immediately turn off the power (unplug the USB or battery). Repeat these steps once more. When the RX is powered on for the third time, the LED will start to double-flash, indicating that the RX has entered binding mode.

Once RX is in binding mode, insert the ELRS TX module into your OpenTX Radio transmitter, select External RF mode and set it to the CRSF protocol. You will find the ELRS menu in the Radio system (ensure the ELRS.LUA file is copied to the SD-Card tools first). Enter the ELRS menu and press [Bind]. The RX LED on the flight controller will become solid if the binding is successful.

ELRS LED status:

• Solid: means bind successful or Connection established.
• Double-flash: means in bind mode.
• Flash slowly: means no signal established with the TX module.

Firmware

Betaflight firmware and CLI

• Download and install the Betaflight Configurator.
• Launch the Betaflight Configurator to flash firmware.

Steps for flashing Betaflight firmware:

1. Select the target port.
2. Click "Update Firmware" to enter the Firmware Flasher tab.
3. Select target "CRAZYBEEF4SX1280" and version. The factory version is 4.4.2[01-Jun-2023].
4. Click "Load Firmware [Online]" to download the firmware.
5. Click "Flash Firmware" to flash the Flight controller.

Download the CLI file from https://www.hd-zero.com/document.

Executing CLI from file:

1. Switch to CLI tab.
2. Load from file BTFL_CLI_HDZERO_AIO5.txt.
3. Execute.

BlueJay ESC firmware

The factory firmware is O_H_5_48_V0.19.2.HEX. To flash a new ESC firmware, here is a YouTube tutorial.

After flashing firmware, it is needed to set the Startup Power of each ESC to 1.00 through BLHeliSuite 16.7.14.9.0.3.

Please note that heat dissipation and a fully charged battery are needed for flashing ESC firmware.

HDZero firmware

• Purchase a HDZero VTX Programmer if you don't have one.
• Download HDZero Programmer application from https://www.hd-zero.com/document.

Utilities

HDZero VTX Programmer:

• Plug the HDZero VTX Programmer into AIO5's VTX FW Connector. Use the USBC cable to connect the programmer tool and PC.
• Launch the HDZeroProgrammer.exe on a Windows PC.
• Select the AIO5.
• Click "Load Online Firmware" and select the version number.
• Click "Flash VTX". "Connecting VTX ..." will be displayed at the bottom. The application will automatically download the firmware and flash it.