SpeedyBee F405 Mini 20x20 Flight Controller


Sale price$59.95

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In stock (3 units), ready to be shipped


Utilizing an upgraded F405 flight controller chip with better performance than the F411, it features a built-in Bluetooth chip for seamless wireless Betaflight tuning. The board comes with a 4-level battery voltage display, built-in barometer, and supports connectivity to all DJI Air Units. It offers 4 available UART ports, and a dual BEC setup with 5V 2A and 9V 3A outputs.


  • MCU
  • IMU(Gyro)
  • USB Port Type
  • Barometer
  • OSD Chip
AT7456E chip
  • BLE Bluetooth
Supported. Used to connect with the SpeedyBee App for flight controller and ESC parameter configuration. Please make sure the MSP switch on UART 4 is turned on and set to a baud rate of 115200, otherwise Bluetooth functionality will not be available.
  • Wireless FC Firmware Flashing
NOT Supported. Please connect to the Betaflight configurator on the PC to do FC firmware update
  • Wireless Blackbox Download & Analysis
NOT Supported. Please connect to the Betaflight configurator on the PC to do blackbox analysis.
  • WIFI
Not supported
  • DJI Air Unit Connection Way
Direct soldering
  • DJI Air Unit Compatibility
Compatible with all DJI Air Units: DJI O3/RunCam Link/Caddx Vista/DJI Air Unit V1. Please use the solder pads < 9V, G, T1, R1, G, SUBS(R2) > on the front right corner of the flight controller to make a pin-to-pin connection with the solder pads on the DJI Air Unit. UART1(T1, R1) is used for OSD and SUBS(R2) is used for DJI Air Unit’s internal SBUS receiver signal input.
  • Blackbox
8MB Onboard Flash
  • BetaFlight Camera Control Pad
Yes(CC pad on the front side)
  • Current Sensor Input
Supported. For SpeedyBee BLS 35A V2 ESC, please set Scale=250 and Offset=-500.
  • Power Input
3-6S LiPo. The flight controller is powered through the G, V wires of the 8pin harness or G, V pads from the bottom side of the flight controller.
  • 5V Output
4 groups of 5V output, three +5V pads and 1 BZ+ pad( used for Buzzer) on front side. The total current load is 2A.
  • 9V Output
1 group of 9V output, one +9V pad on front side. The total current load is 3A.
  • 3.3V Output
Supported. Soldering pad named ‘3V3’ on the front top of the flight controller. Designed for 3.3V input receivers. Up to 500mA current load.
  • 4.5V Output
Supported. Designed for radio receiver and GPS module even when the FC is powered through the USB port. Up to 1A current load.
  • ESC Signal
M1 - M4 wires or soldering pads on bottom side.
  • UART
6 sets(UART1, UART2, UART3, UART4(Dedicated for Bluetooth connection)), UART5(Dedicated for ESC telemetry),UART6
  • ESC Telemetry
  • I2C
Supported. DA & CL pads on front side. Used for magnetometer, sonar, etc
  • Traditional Betaflight LED Pad
Supported. 5V, G and LED pads on bottom of the front side. Used for WS2812 LEDs controlled by the Betaflight firmware.
  • Buzzer
BZ+ and BZ- pad used for 5V Buzzer
  • BOOT Button
Supported. Press and hold BOOT button and power the FC on at the same time will force the FC to enter DFU mode, this is for firmware flashing when the FC gets bricked.
  • RSSI Input
Not Supported
  • Smart Port / F.Port
Not Supported
  • Supported Flight Controller Firmware
BetaFlight(Default), INAV
  • Firmware Target Name
  • Mounting
20 x 20mm 3.5mm hole diameter ,Compatible with M2 and M3 screws/Silicone grommets.
  • Dimension
30(L) x 32(W) x 7.8(H)mm
  • Weight



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