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TUNERC Poly F405 20A 2S-4S AIO v1.3 Flight Controller - 25.5x25.5mm

TUNERC Poly F405 20A 2S-4S AIO v1.3 Flight Controller - 25.5x25.5mm

SKU V7-13614
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$73.99 - $73.99
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$73.99 - $73.99
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Note: The Poly F405 V1.2 AIO is now updated to V1.3.  In the V1.3 AIO, we improved the power supply design. The pad layout, the specs, the wiring diagram are all the same as V1.2. —- updated on May 21, 2026

You can check out our documentation for different versions of Poly F405 AIO information here.

Versatile and High Performance AIO for Micro Community

This Poly F405 2S-4S AIO is designed for FPV micro community and it’s made to be super versatile so pilots can use this it in different builds like agile micro or long range quad or creative X6/X8 quads.
The AIO board has integrated blackbox, current meter and features 5 UARTs to suit needs for different builds. Apart from versatility, we have made this AIO board high performance to make sure it could hold up well on powerful quads. To achieve this goal, this AIO board comes with powerful F405 chip and high quality 20A mosfets and excellent heat dissipation ability.

Check out our wide variety of Whoop Style AIO Boards and the rest of our TUNERC Products Collection.

Several improvements are made to the V1.2 to make the Poly AIO easier to solder and work with, and to meet pilots needs.

  • Bigger and easier to access battery lead and capacitor soldering pads.
  • Bigger flash blackbox. The blackbox flash is updated from 4Mbyte to 8M flash. Pilots can now record more flying data, which makes the tuning easier.
  • New inverter is used. Now, you don’t need to bridge the jumper pads any more. Just wire the SBUS receiver to the UART4, and you are good to go.
  • Higher current 3.3V LDO is featured onboard, the power supply is much improved. 

 

Suitable for Lightweight Toothpick and Cinewhoop

The Poly AIO V1.2 is easy to use, light weight and versatile. Big soldering pads, reasonable pad layout and easy to access battery leads, all of these features make the Poly F405 V1.2 AIO really easy to solder and work with.  It also features a bigger blackbox 8M flash, now you can record more flying data. And 5UARTs onboard mean you will not be short of UART anymore. So whether you build toothpick, cinewhoops or longrange quads, Poly F405 2S-4S V1.2 AIO get you all covered.

 

Recommended Builds

The Poly V1.2 AIO is suitable for light 3″ sub250g builds. It supports motors ranging from 1102~1104, 1202~1204, 1303, to 1404 motors. 1404 is the largest motor the Poly V1.2 supports, please avoid using high kv option like 6000kv 1404 motors. And for 1404 4s build, we highly recommend you solder the capacitor directly to the capacitor soldering pads.

Note for Motor Choice

1404 is the maximum motor size that the Poly F405 V1.2 supports. About the KV value, please avoid using high kv 1404/1303 motors, such as 1404 6000KV.  For the 1404 size motor, 3800kv is recommended.

Note for Capacitor Installation

Please solder the capacitor directly to the onboard capacitor soldering pad. We highly recommend that you do this when you build a 4S quad.

Note for Receiver and VTX Setup

Please power up the receiver and VTX by the battery during the binding and setup process. Because the 5V from USB does not power the receiver and VTX.

Note for Buzzer Choice

Only the buzzer with a built-in drive circuit can be used on this AIO flight controller. A common micro buzzer (that only has two legs and without PCB board) is incompatible with the Poly F405 2S-4S AIO. 

Hardware Specs

    • FC MCU: STM32F405RGT6( Cortex®-M4 168Mhz )
    • Built-in OSD: AT7456E
    • Built-in IMU: BMI270
    • Built-in 8M Flash Blackbox
    • Built-in Current Meter
    • ESC MCU: EFM8BB21 ( 8bit 50MHz )
    • UART: UART1 ( for VTX by default ), UART2, UART3, UART4 ( supports SBUS ), UART5 
    • Other interfaces: IIC ( IIC2 ) , LED_Strip, Buzzer
    • The through holes for power lead: big enough to fit 16AWG wire
    • 8 Motor Outputs ( The onboard esc have been used for 4 motor outputs. You can add 4 external esc if you want to use the other 4 motor outputs )

    Electronics Specs

    • Input Voltage: 6.50-20.0V( 2S-4S LIPO/LIHV )
    • Power Output: 5V 2A
    • Continuous Current: 20A

    Firmware

    • FC Betaflight Target: TUNERCF405
    • ESC Firmware: Bluejay P-H-25

    Motor Size Supported

    • 1102~1104, 1202~1204, 1303, 1404

    Recommended Capacitor 

    • A 35V 220uf capacitor is included. A 35v 220-470 uf capacitor with low ESR is recommended if you want to swap the default one.

    Dimensions

    • Size: 33mm x 33mm
    • Mounting Holes Pattern: 25.5 x 25.5mm   Room for M3.5 grommets to make M2 mount
    • Weight: 6.1g

     

    Download the wiring diagram here.

    Package Includes:

    • 1 * Poly F405 2S-4S 20A AIO V1.3
    • 1 * XT30 pigtail with 18awg wire
    • 1 * 35V 220uf capacitor 
    • 6 * grommets

     

    DIYFPV

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