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

Regular price $57.99 Sale

Availability: Available Unavailable

Product SKU: 55E-11370

Product Details

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.


Hardware Specs:

  • FC MCU: STM32F405RGT6( Cortex®-M4 168Mhz )
  • Built-in OSD: AT7456E
  • Built-in IMU: BMI270
  • Built-in 4MB Blackbox
  • Built-in Current Meter
  • ESC MCU: EFM8BB21 ( 8bit 50MHz )
  • UART: UART1 ( for VTX by default ), UART2, UART3, UART4( for the receiver by default, 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
  • Peak Current: 28A


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

Motor Sizes Supported:

  • 11xx
  • 12xx
  • 13xx
  • 14xx*


  • Size: 33mm x 33mm
  • Mounting Holes Pattern: 25.5 x 25.5mm Room for M3.5 grommets to make M2 mount
  • Weight: 5.8g

Package Includes:

  • 1 x TUNERC Poly F405 2S-4S AIO Flight Controller - 25.5x25.5


We have updated the config file in Betaflight to fix the resource conflict issue which might cause LED can't function or one of the motors can't spin.
So pilots now can just flash firmware in Betaflight to fix the issue.

Please flash firmware as steps below. 

Go to "Firmware Flasher" tab in Betaflight> Select flight controller "TUNERCF405" > Enable "Full chip erase" > Click "Load Firmware (Online)"> Click "Flash Firmware"

Finally, if you want to back up your settings before flash the firmware, please only use diff to export the settings instead of dump or any other ways.

    Versatility Makes Possibility for Different Builds

    5UARTs Available | 8 Motors Output | Blackbox and Current Meter Onboard

    The Poly F405 AIO board has 5 UARTs available and many interfaces, you can take advantage of them to add external buzzer, GPS module, barometer and etc. Furthermore, this board also features EIGHT motor outputs, definitely a perfect option for x8 quad fans! And for sure, we don’t forget advanced users, 4MB blackbox and current meter are already onboard for Betaflight tuning.

    High Performance for Better Flying Experience

    F405 MCU | FD6288 chip | High Quality 20A Mosfets
    With fast 168MHz processing power and 1MB flash memory, F405 chip is a strong core of the AIO board, you could enable RPM filtering or dynamic idle and other features in Betaflight without worrying about if the MCU is overload.
    FD6288 chip and high quality 20A mosfets and excellent heat dissipation design make this aio board hold up well for hardcore freestyle flying.

    Preflashed with Bluejay

    Bluejay is an open source esc firmware. One of the appealing features it comes with is Bidirectional Dshot and RPM filtering, which can improve flight performance a lot. Kudos to devs from Bluejay for their hard work. You can find more detailed information on Github or join their discord for discussion.

    F405 is a good balance in terms of frequency, memory and IO

    Compared with F405 and F722, F405 has strikingly good performance on flash memory. Since Betaflight is developing fast and packed with more features, the limited 512K flash memory of F411 and F722 is becoming insufficient for Betaflight, the devs from Betaflight have to cram the Betaflight to F411 and F722. The larger flash memory of F405 is good for devs and pilots alike.

    Note: “IO” stands for input and output.