The SpeedyBee F405 Mini BLS 35A 20×20 Stack features an upgraded F405 flight controller chip and a built-in Bluetooth chip for seamless wireless Betaflight tuning. This board comes with a 4-level battery voltage display and a 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.

The 35A 4-in-1 BLHeli_S Mini 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 a 4-6S battery. Equipped with a TVS transient suppression diode onboard, it better absorbs surge voltage, providing enhanced protection for the ESC.

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• TVS transient suppression diode for surge voltage absorption and enhanced protection 
• Compatibility with 2-4 inch and lightweight 5-inch quadcopters
• Four synchronized outputs with a continuous current of 35A
• Dual BEC setup: 5V 2A output and 9V 3A output
• Built-in Bluetooth chip for wireless Betaflight tuning
• Supports connectivity to all DJI Air Units
• Upgraded F405 flight controller chip
• 4-level battery voltage display
• 35A continuous current output
• Supports 4-6S battery
• 4 available UART ports
• Built-in barometer

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SPEEDYBEE F405 V3 20X20 FLIGHT CONTROLLER

• DJI Air Unit Compatibility: Compatible with all DJI Air Units (DJI O3/RunCam Link/Caddx Vista/DJI Air Unit V1). Use specific solder pads for pin-to-pin connection. Note: UART1 is used for OSD and SUBS(R2) is used for SBUS receiver signal input
• BLE Bluetooth: Supported. Used to connect with the SpeedyBee App for flight controller and ESC parameter configuration. Note: MSP switch on UART 4 must be turned on and set to a baud rate of 115200 for Bluetooth functionality
• Wireless FC Firmware Flashing: NOT Supported. Connect to Betaflight configurator on PC for firmware update
• Wireless Blackbox Download & Analysis: NOT Supported. Connect to Betaflight configurator on PC for blackbox analysis
• Current Sensor Input: Supported. For SpeedyBee BLS 35A V2 ESC, set Scale=250 and Offset=-500
• Power Input: 3-6S LiPo. Powered through 8pin harness G, V wires or G, V pads from bottom side
• BOOT Button: Supported. Forces FC to enter DFU mode for firmware flashing
• 3.3V Output: Supported. Designed for 3.3V input receivers. Up to 500mA current load
• 4.5V Output: Supported. Designed for radio receiver and GPS module. Up to 1A current load
• Mounting: 20 x 20mm, 3.5mm hole diameter. Compatible with M2 and M3 screws/Silicone grommets
• I2C: Supported. DA & CL pads on the front side for magnetometer, sonar, etc
• Traditional Betaflight LED Pad: Supported. Used for WS2812 LEDs
• Supported Flight Controller Firmware: BetaFlight (Default), INAV
• BetaFlight Camera Control Pad: Yes. CC pad on the front side
• ESC Signal: M1 - M4 wires or soldering pads on the bottom side
• UART: 6 sets. UART1-6 with dedicated purposes
• Firmware Target Name: SPEEDYBEEF405MINI
• Buzzer: BZ+ and BZ- pad used for 5V Buzzer
• 5V Output: 4 groups. The total current load is 2A
• 9V Output: 1 group. The total current load is 3A
• DJI Air Unit Connection Way: Direct soldering
• Dimension: 30(L) x 32(W) x 7.8(H)mm
• Smart Port / F.Port: Not Supported
• ESC Telemetry: UART R5 (UART5)
• Blackbox: 8MB Onboard Flash
• RSSI Input: Not Supported
• OSD Chip: AT7456E chip
• IMU(Gyro): ICM42688P
• USB Port Type: Type-C.
• WIFI: Not supported
• Barometer: Built-in
• MCU: STM32F405
• Weight: 9.6g

SPEEDYBEE 35A BLHELI_s MINI V2 4-IN-1 ESC

•  Mounting: 20 x 20mm ∅3.5mm hole size, compatible with M2 and M3 screws/Silicone grommets
• Power Output: VBAT (Battery voltage, used to power the flight controller)
• Current Sensor: Support (Scale=250 Offset=-500)
• ESC Telemetry: Not supported
• Burst Current: 45A (5 seconds)
• Dimension: 35 * 35 * 5.5mm
• ESC Protocol: DSHOT300/600
• Continuous Current: 35A * 4
• Firmware: BLHeli_S J-H-40
• Power Input: 3-6S LiPo
• Weight: 7.2g

• 1x SpeedyBee F405 V3 20x20 Flight Controller
• 1x SpeedyBee 35A BLHeli_S Mini V2 4-in-1 ESC
• 5x M2 Silicone O-Ring
• 5x M5 Silicone O-Ring
• 5x M2 Anti Vibration Silicone Grommets
• 5x M3 Anti Vibration Silicone Grommets
• 1x 8-Pin JST cable 30mm
• 1x 35V 470uf Capacitor

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