• MicoAir F405 Mini flight controller stacked on Bluejay 30A 4-in-1 ESC — 20x20 stack
  • MicoAir F405 Mini flight controller — top and bottom sides with USB-C and connectors
  • MicoAir405 Mini FC bottom side — STM32F405 MCU, USB-C port and TF card slot
  • MicoAir405 Mini FC top side — AT7456E OSD chip, BOOT button and SH1.0 connectors
  • MicoAir 4IN1 ESC spec sheet — 2-5S, 30A, BlueJay 48K, DShot300/600, M3 20x20 mm
  • MicoAir F405 Mini top layout — BMI270 IMU, DPS310 barometer, AT7456E OSD, 5V/9V BEC
  • MicoAir F405 Mini bottom layout — STM32F405 MCU, DJI Air Unit port, UART4, TF card slot
  • MicoAir405Mini ports diagram — motor, UART1, GPS/I2C, SBUS, VTX and DJI O3 pinouts
  • MicoAir F405 Mini flight stack held between fingers to show its compact size
  • MicoAir405mini package contents — flight stack and FC-only versions with cables and accessories
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MicoAir

MicoAir F405 Mini Flight Controller Board 20x20mm & Bluejay 30A 4in1 ESC with full port enable and OSD built-in, supports Betaflight/INAV/ Ardupilot & DJI O3 Air Unit FPV

MicoAir F405 Mini Flight Controller Board 20x20mm & Bluejay 30A 4in1 ESC with full port enable and OSD built-in, supports Betaflight/INAV/ Ardupilot & DJI O3 Air Unit FPV

$45.99 CAD
$45.99 CAD
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📦 Ships from our US or Canada warehouse — US delivery in 2–7 business days, duties & taxes prepaid · 🇨🇦 Canada: free shipping · 30-day returns

Firmware
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📘 Documentation & Guides

Setting it up with an AI assistant? Read our AI setup guide first. It shows you how to point ChatGPT, Claude or Gemini at the official manual for this product, so the answers come from the real pinout and parameter names instead of guesses.

Specifications

  • MCU: STM32F405RGT6, 168MHz, 1MB Flash
  • IMU: BMI270
  • Baro: DPS310
  • OSD: AT7456E
  • MicroSD Card Slot
  • 6x UART
  • 9x PWM
  • 1x I2C
  • 1x SWD
  • 2x ADC (VBAT, Current)
  • USB Type-C
  • BEC 5V 2.5A output (for controller, receiver, GPS, optical flow or other devices)
  • BEC 9V 2.5A output (for video transmitter, camera)

UART Mapping

  • SERIAL0 -> USB
  • SERIAL1 -> UART1 (DMA-enabled)
  • SERIAL2 -> UART2 (DJI-VTX, DMA-enabled)
  • SERIAL3 -> UART3 (GPS)
  • SERIAL4 -> UART4 (DMA-enabled)
  • SERIAL5 -> UART5 (ESC Telemetry)
  • SERIAL6 -> UART6 (RX6 is inverted from SBUS pin, no DMA on TX6)

RC Input

The default RC input is configured on the UART6_RX inverted from the SBUS pin. Other RC protocols should be applied at other UART port such as UART1 or UART4, and set the protocol to receive RC data: SERIALn_PROTOCOL=23 and change SERIAL6_Protocol to something other than ’23’


OSD Support

The MicoAir405Mini supports OSD using OSD_TYPE 1 (MAX7456 driver).


VTX Support

The SH1.0-6P connector supports a DJI O3 Air Unit connection. Pin 1 of the connector is 9v so be careful not to connect this to a peripheral requiring 5v.


PWM Output

The MicoAir405Mini supports up to 9 PWM outputs.

Channels 1-8 support DShot.

Channels 1-4 support bi-directional DShot. PWM outputsare grouped and every group must use the same output protocol:

1,2,5,6 are group 1

3, 4 are group 2

7,8 are group 3

9 are in group 4


Battery Monitoring

The board has a internal voltage sensor and connections on the ESC connector for an external current sensor input.

The voltage sensor can handle up to 6S LiPo batteries.

The default battery parameters(for Ardupilot) are:

  • BATT_VOLT_PIN 10
  • BATT_CURR_PIN 11
  • BATT_VOLT_MULT 21.2
  • BATT_AMP_PERVLT 40.2

The current scaling is a board default rather than a match for any particular ESC — calibrate it against a real measurement once your ESC is fitted.

Compass

The MicoAir405Mini does not have a built-in compass, but you can attach an external compass using I2C on the SDA and SCL connector.


Physical

  • Mounting: 20 x 20mm, Φ3.5mm
  • Dimensions: 30 x 30 x 8 mm
  • Weight: 6g
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