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.
35A 4-in-1 BLHeliS Mini ESC: 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.

Specification

Product Name : SpeedyBee F405 Mini BLS 35A 20x20 Stack

Flight Controller : SpeedyBee F405 Mini
MCU : STM32F405
IMU(Gyro) : ICM42688P
USB Port Type : Type-C
Barometer : Built-in
OSD Chip : AT7456E chip
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 Units internal SBUS receiver signal input.

ESC : SpeedyBee 35A BLHeli_S 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 Dwonload & Analysis : NOT Supported
Power Input : 3-6S LiPo
Mounting : 20 x 20mm 3.5mm hole sizeCompatible with M2 and M3 screws/Silicone grommets
Dimension : 32mm(L) x 35mm(W) x 14.2mm(H)