SpeedyBee F4 Mini 3-6S 20x20 Stack/Combo (F405 FC / 35A 8Bit 4in1 ESC)
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SpeedyBee F4 Mini 3-6S 20x20 Stack/Combo (F405 FC / 35A 8Bit 4in1 ESC)
About this item
The SpeedyBee F4 3-6S 20x20 Stack/Combo (F405 FC / 35A 8bit 4in1 ESC)! Experience feature-rich performance and an unbeatable price for a 20x20 stack. 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. This ESC provides four synchronized outputs with a continuous current of 35A, delivering strong power to drive all 2-4 inch and lightweight 5-inch quadcopters via 4-6S battery. Equipped with a TVS transient suppression diode onboard, it better absorbs surge voltage, providing enhanced protection for the ESC.
Product Name: SpeedyBee F405 Mini BLS 35A 20x20 Stack
Flight Controller: SpeedyBee F405 Min
ESC: SpeedyBee BLS 35A Mini V2 4-in-1 ESC
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.
WiFi: NOT Supported
Wireless FC Firmware Flashing: NOT Supported
Wireless: Blackbox Download & Analysis NOT Supported
Power Input: 3-6S LiPo
Mounting: 20 x 20mm 3.5mm hole size， Compatible with M2 and M3
screws/Silicone grommets
Dimension: 32mm(L) x 35mm(W) x 14.2mm(H)
Weight: 13.5g
SpeedyBee F405 V3 30x30 Flight Controller
MCU: STM32F405
IMU(Gyro): ICM42688P USB Port Type: Type-C
Barometer: Built-in
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 firmeare 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: UART R5(UART5)
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.
It's really good for a budget flight stack. I have one in my grinderino and stingy v2. They perform really well for both 3.5" and 5" 4s. Has eaten a few trees, buildings, metal poles, cement, and havent had to replace the stack or escs on either quad.. just motors, but thats for a different review. Out of the box stock it will jitter alot(at least with high rates), so you will have to tune the fc for freestyle. I've definitely put them through a stress test for the past month, so far so good. Highly recommend if you're on a budget, or if you just want a basher.
