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Electronics, ESC, FC/ESC Stacks, Flight Controllers
SpeedyBee F405 Mini BLS 35A 20×20 Stack
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$59.99 for a Bluetooth 35A Stack? That’s ridiculous！
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.
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.
Tune Flight controller and ESC wirelessly!
Power the quad, connect the SpeedyBee app via Bluetooth, 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.
With this Bluetooth stack, even micro drones become easy to tune—no need to worry about the hassle of inserting USB cables into the flight controller. Simply tune your drone wirelessly through the App, and say goodbye to wires and worries!
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*.
The use of Japanese TDK filtering SMT capacitors and the onboard TVS protective diode, further enhances your flight experience, providing a seamless and reliable performance. The stack underwent rigorous pressure testing with various 5-inch freestyle and racing drones, confirming its powerful capability to effortlessly drive any 2-4 inch and lightweight 5-inch drones.
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.
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.
* To use this feature, go to the App > Motors > Motor Direction Settings.
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
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!
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.
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 cutouts for FPV camera in your tight build
● Onboard barometer for real-time altitude sensing
● Onboard 8MB Blackbox storage
Specs Overview
| Product Name | SpeedyBee F405 Mini BLS 35A 20×20 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 Dwonload & 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 |
Specifications
| ProductName | SpeedyBee F405 V3 30×30 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 Dwonload & 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. |
| RSSI Input | Not Supported |
| Smart Port / F.Port | Not Supported |
| Supported Flight Controller Firmware | BetaFlight(Default), INAV |
| Firmware Target Name | SPEEDYBEEF405MINI |
| 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 | 9.6g |
| ProductName | SpeedyBee 35A BLHeli_S Mini V2 4-in-1 ESC |
| Firmware | BLHeli_S J-H-40 |
| Continuous Current | 35A * 4 |
| Burst Current | 45A(5seconds) |
| ESC Protocol | DSHOT300/600 |
| Power Input | 3-6S LiPo |
| Power Output | VBAT(Battery voltage, used to power the flight controller) |
| Current Sensor | Support (Scale=250 Offset=-500) |
| Mounting | 20 x 20mm ∅3.5mm hole size，compatible with M2 and M3 screws/Silicone grommets. |
| Dimension | 35 * 35 * 5.5mm |
| Weight | 7.2g |
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