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Description
SpeedyBee F405 Mini Stack - F405 V3 FC + 35A 3-6S BLHeli_S 4-in-1 ESC - 20x20The SpeedyBee F405 Mini BLS 35A 2020 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
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.
Features
- 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
Specifications
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
Includes
- 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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Great trial set. Just be careful throwing the orange one!
Style: Assorted Balls (Pack of 3), Size: 2.5 inch
Blue isn't that easy to see in the yard
White charges with bright light/UV and is truly a game changer for night-time fetch. Both dogs clearly favor it.
Orange is easy to see in the grass at day
They're 3 different weights as well, so double trial. I prefer medium for my big dogs, though light performs well too
The orange is HEAVY and unyielding. Do NOT throw it with a ball thrower. It could damage your house or knock your dog out. Seems tough though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
★★★★★ 3
Not as good as chuck it anymore
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
I have bought these before and the where just like the chuck it balls. These are not those balls. The are lighter and my dog has already cause damage to one
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
★★★★★ 5
Great, durable toy
Color: Blue-Red, Size: Extra Large Size 5 (9")
I’ve had this toy for a while now and my dog absolutely loves it. I frequently bring it to the dog park with us and it’s also loved by other dogs. The ball is pretty durable. My dog is not a big chewer but other dogs that play and chew on it haven’t been able to pierce it yet. The handles are sturdy and also still intact. Overall a little pricey but in my opinion worth it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 30, 2026
★★★★★ 5
fun for dog
Color: Red-Blue, Size: Medium Size 2 (6")
popped kinda easy but my dog is still having fun with it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
Best ball ever!
Color: Red-Blue, Size: Large Size 3 (8"), Color: Red-Blue, Size: Large Size 3 (8")
Oh my goodness. My cane corso (15 mos) LOVES this ball. It’s easy for them to pick up because of all the little handles sewn into the ball. It’s easy to throw as well. The only thing is he likes to chew them off if he gets free time with the ball. The ball itself is very sturdy. highly recommend, and I’ll be ordering more. We play with this every morning and he’s so excited to take it outside.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
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