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.
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Tune Flight controller and ESC wirelessly!
Power the quad, connect the SpeedyBee app via Bluetooth, and configure the UART Ports, PID, OSD and every other settings on this flight controller. Also, every parameter of the BLHeli_S ESC in this stack can be set via the app.
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Powerful Real 35A 4-in-1 ESC!
6-layer 2oz PCB plus optimized circuit design equals stable and strong current output. The four-channel continuous 140A output can reach 30 seconds*.
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Clean Gyroscope Power Supply, Smoother Flight
Equipped with the renowned brand MaxLinear's LDO power supply chip, the gyroscope receives independent power, boosting surge protection capacity by 320%. Additionally, built with a 100uF ultra-large filtering tantalum capacitor, guarding the gyroscope's data from interference caused by the power source. Each posture and movement during flight receives precise responsiveness, allowing you to fully experience the pure beauty of flying!
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Forgot your LiPo checker? Just look at the FC!
On the side of the flight controller, you will find a 4-level battery capacity indicator. As soon as you connect the battery, you can instantly see the battery level, saving you the hassle of needing to put on goggles to check the battery status.
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Change motor directions wirelessly!
Are you still using a computer to change motor directions? With this stack, when you finish your build, connect to the SpeedyBee app, change the motor directions just in a few simple steps*. Then take off.
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Support DJI Digital Video Transmitter
The flight controller has two independent 9V 3A BEC and 5V 2A BEC, supports various analog image transmissions above 5V, and also supports DJI O3 Air Unit/Link / Vista/Air Unit V1
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M2 or M3? Why not both?
Have you ever experienced that the stack holes of your frame did not fit the stack you got? This stack is perfectly compatible with M2/M3 screws. What’s more, two sets of M2 and M3 screws + silicone grommets are included in the package!
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TVS Protective Diode + 470uF Low-ESR Capacitor = Upgraded ESC Protection
The ESC is built with TVS protective diode to absorb the voltage spike when you plug in the battery, or during crashes that block your props. We also provide a Rubycon 470uF Low-ESR capacitor, ensuring clean data from the gyro to the FC.
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·        And packaged with more useful features
·        Sufficient 4 x UARTs for your receiver + VTX + camera + GPS.
·        Two independent 5V 2A BEC and 9V 3A BEC.
·        Power your GPS with a USB cable - no battery needed. No extra heat, no worries
·        17mm cut-outs for FPV camera in your tight build
·        On-board barometer for real-time altitude sensing
·        On-board 8MB Black box storage






Specifications
·  Strong Power Output: High discharge rate and steady discharge curve provide more energy, more enjoyment and enough explosive power. High burst rate offers higher acceleration.
·    Product Name: SpeedyBee F405 Mini BLS 35A 20×20 Stack
·        Flight Controller: SpeedyBee F405 Mini
·        ESC: SpeedyBee BLS 35A Mini V2 4-in-1 ESC
·        Bluetooth: Supported (via SpeedyBee App for FC & ESC configuration)
·        ⚠Ensure MSP on UART4 is turned ON
·        Set baud rate to 115200 for Bluetooth to function
·        WiFi: Not Supported
·        Wireless FC Firmware Flashing: Not Supported
·        Wireless Blackbox Download & Analysis: Not Supported
·        Power Input: 3–6S LiPo
·        Mounting Pattern: 20×20mm (3.5mm hole size)
·        Compatible with M2 & M3 screws / Silicone grommets
·        Dimensions: 32mm (L) × 35mm (W) × 14.2mm (H)
·        Weight: 13.5g
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Specifications Flight Controller
| MCU |
STM32F405 |
| Gyro (IMU) |
ICM42688P |
| USB Port |
Type-C |
| Barometer |
Built-in |
| OSD Chip |
AT7456E |
| Blackbox |
8MB Onboard Flash |
| Firmware |
BetaFlight (Default) |
| Firmware Target |
SPEEDYBEEF405MINI |
| Bluetooth |
Supported (Enable MSP on UART4, 115200 baud rate) |
| WiFi |
Not Supported |
| Wireless Firmware Flashing |
Not Supported (Use Betaflight Configurator on PC) |
| Wireless Blackbox |
Not Supported (Use Betaflight Configurator on PC) |
| DJI Compatibility |
DJI O3 / RunCam Link / Caddx Vista / DJI Air Unit V1 |
| DJI Connection |
Direct soldering (9V, G, T1, R1, G, SBUS(R2)) |
| Power Input |
3–6S LiPo |
| 5V Output |
3× +5V pads + 1× BZ+ (Total 2A) |
| 9V Output |
1× +9V pad (Total 3A) |
| 3.3V Output |
Up to 500mA |
| 4.5V Output |
Up to 1A (Works via USB power) |
| UART |
6 Sets (UART1–6, UART4 for Bluetooth, UART5 for ESC Telemetry) |
| I2C |
Supported (DA & CL Pads) |
| LED Pad |
Supported (WS2812) |
| Buzzer |
BZ+ / BZ- (5V Buzzer) |
| Boot Button |
Supported (DFU Mode) |
| Mounting |
20×20mm (3.5mm hole), M2 & M3 compatible |
| Dimensions |
30 × 32 × 7.8mm |
| Weight |
9.6g |
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Specifications ESC