
Wiring Diagram for Poly F405 2S-4S AIO V1.2
Pinout Diagram for Poly F405 V1.2

ELRS/ TBS Crossfire Receiver/ Analog System Wiring

GPS/ LED/Buzzer/SBUS Receiver Wiring

DJI O3 Wiring

In general. you can wire the DJl 03 unit to any free UART on the Poly board.
For users that don’t use DJl radio controller, please refer to this diagram.
You don’t need to wire the “Signal GND” and “SBUS” wire from the DJl VTX plug.
For users that use DJl radio controller, please refer to this diagram.
Walksnail HD Avatar 1S VTX Wiring
Please note that the V3 Avatar 1S VTX only supports 1s-3s battery input.
HDZero Whoop Lite VTX Wiring
Actually, you can wire HD Zero Whoop Lite VTX to any sapre UART pads on Poly F405 board.
The wiring diagram above is only for reference.
ELRS/ TBS Crossfire Receiver Betaflight Setup
In Betaflight 4.5, under “Ports”tab, enable “Serial Rx” under corresponding uart you set for the RX.
Under “Receiver” tab, choose “Serial (via UART)” receiver mode and “CRSF” serial receiver provider.

SBUS Receiver Betaflight Setup
In Betaflight 4.5, under “Ports”tab, enable “Serial Rx” under corresponding uart you set for the RX.
Under “Receiver” tab, choose “Serial (via UART)” receiver mode and “SBUS” serial receiver provider.

Analog VTX Betaflight Setup
In Betaflight 4.5, under “Ports”tab, choose “VTX (TBS Smart Audio)” under corresponding uart you set for the analog VTX.

DJI O3 and Walksnail Avatar HD 1S VTX Betaflight Setup
1. In Betaflight 4.5, under “Ports” tab, please enable “Configuration MSP” and choose “VTX (MSP + Display port)” for corresponding UART you set for DJl O3 VTX.
1.2. Under “Presets” tab, search DJl OSD, select “OSD for Fpv. wtf, DJl 03, Avatar HD ” and select the corresponding uart you set for the DJl VTX under “Options”, finally click “Pick”
HD Zero Whoop Lite VTX Betaflight Setup
- In Betaflight 4.5, under” Ports” tab, please enable “Configuration MSP” and choose “VTX (MSP + Display port)” for corresponding UART
- To setup smart audio in Betaflight 4.5, please choose “VTX (Smart audio)” under” Peripherals” for the corresponding UART.

- Under “Presets” tab, search “HD Zero VTXs “and select the corresponding UART you set for the HD Zero VTX under “Options”, finally click “Pick”


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