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Ships within 48 hours · Estimated delivery Jul 31 - Aug 5
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Description
SpeedyBee F405 Mini BLS 35A 20x20 Stack$59. 99 for a Bluetooth 35A Stack? Thats 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
Specs Overview
| Product Name | SpeedyBee F405 Mini BLS 35A 20x20 Stack |
| Flight Controller | SpeedyBee F405 Mini |
| 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 Mini 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) |
| ESC Telemetry | Not supported |
| Mounting | 20 x 20mm ∅3.5mm hole size，compatible with M2 and M3 screws/Silicone grommets. |
| Dimension | 35 * 35 * 5.5mm |
| Weight | 7.2g |
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
4.7 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 5
Westies Fav
Size: Small, Pattern Name: Pack of 1
Best Westie ball ever, my dog loves this ball. Exactly her size! 3" tennis balls are too big & she rips the fur off. this silicone-ish ball has no fur & is 2&1/2 "
We have 2" balls from her electronic ball laucher, but she still loves this glow in the dark best!
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Reviewed in the United States on May 4, 2026
★★★★★ 5
Best dog ball in the world!
Size: Large, Pattern Name: Pack of 1, Size: Large, Pattern Name: Pack of 1
My dog is singularly obsessed with playing ball. He would drop a steak to chase a ball. (He'd return to the steak, but not without the retrieved ball. He's not an idiot.) He makes dangerous leaps, crashes into trees, and runs fast enough to catch thrown balls before they even hit the ground. Since he doesn't care about his own wellbeing, it's my job to protect him as much as I can. And a lot of balls are hard enough to cause him pain or dental damage when he mistimes a catch. Enter the ChuckIt Glow Ball!
The minute Cowboy got his first Glow Ball, he no longer had any interest in the dozens of tennis balls scattered around the house and yard. If I took the Glow Ball away and instead threw a tennis ball, Cowboy would run to retrieve the ball, then return without it and begin looking all over the house for the Glow Ball. The Glow Ball is tough enough to survive Cowboy's big, sharp chompers, yet it's soft enough to do no harm when it hits him in the face. The glow feature is a huge bonus, too. Cowboy gets distracted by chipmunks and squirrels when we're playing, so he sometimes can't remember where he dropped the ball to pursue the interloper. If the ball was exposed to enough light before it was misplaced, it will be easy to find once the sun goes down. (Otherwise, Cowboy always finds it eventually.) When I'm feeling nocturnal, I'll put the ball under a light for a few minutes to activate the electrons, then treat my boy to a middle-of-the-night game of fetch.
I was so happy to see these on sale, I bought a lifetime supply for my pantry. The size guide seems accurate. ChuckIt recommended the large size for a dog of Cowboy's weight and that size is perfect. Highly recommended product.
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Reviewed in the United States on October 14, 2024
★★★★★ 5
Bouncy, not hard, and good value.
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
Great balls for the ball launcher and not rockhard like some of the solid rubber balls. These have great bounce, and because of the two holes, they make a fun whistling noise as they fly through the air. My dogs love them and they are a good value.
By the way, if you throw them too hard, they will go through chain-link and no climb fence because they squish a bit!
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Reviewed in the United States on February 16, 2026
★★★★★ 5
Excellent dog balls — safe design and very durable
Style: Fetch Balls (Pack of 3), Size: 2.5 inch
These fetch balls from Amazon Basics are fantastic, and my dog absolutely loves them. One of the biggest reasons I prefer these over other brands is the hole that runs through the center of the ball. This is a very important safety feature: if a dog were to accidentally get the ball stuck in the back of the throat, the hole allows air to pass through. That small detail could literally make a life-saving difference.
Aside from the safety benefit, they bounce well, are easy to clean, and hold up to a lot of playtime. They’re firm but not rock-hard, and my dog goes crazy for them. Great value, great quality, and a thoughtful design.
Highly recommended for dog owners who want a safer alternative to standard solid rubber balls.
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Reviewed in the United States on December 1, 2025
★★★★★ 5
Great ball for heavy chewers
Style: Assorted Balls (Pack of 3), Size: 2.5 inch
Great toy for my Doberman. She chews through tennis balls in about 15 minutes but these are very durable. She likes to chase them but also just chew on them.
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Reviewed in the United States on April 26, 2026