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Description
SpeedyBee F4 V4 Stack - F405 V4 FC + 60A BLHeli_S 4-in-1 ESC - 30x30Experience superior connectivity and versatility with the SpeedyBee F4 V4 Stack. With six sets of UART ports for seamless communication, Bluetooth support enables convenient flight controller configuration. Offering compatibility with DJI Air Unit through two connection methods, and featuring an external 1000uF Low ESR Capacitor for enhanced stability, this stack is perfect for both BetaFlight and INAV firmware. Compact and lightweight, with a Type C
Experience superior connectivity and versatility with the SpeedyBee F4 V4 Stack. With six sets of UART ports for seamless communication, Bluetooth support enables convenient flight controller configuration. Offering compatibility with DJI Air Unit through two connection methods, and featuring an external 1000uF Low ESR Capacitor for enhanced stability, this stack is perfect for both BetaFlight and INAV firmware. Compact and lightweight, with a Type-C USB port and DSHOT300/600 ESC protocol, it's the ideal choice for streamlined drone builds.
Features
- UART - 6 sets(UART1, UART2, UART3, UART4(Dedicated for Bluetooth connection)), UART5 (Dedicated for ESC telemetry),UART6
- BLE Bluetooth - Supported. Used for Flight Controller configuration (MSP should be enabled with Baud rate 115200 on UART4)
- DJI Air Unit Connection Way - Two ways supported: 6-pin connector or direct soldering.
- External Capacitor 1000uF Low ESR Capacitor (In the package)
- Supported Flight Controller Firmware - BetaFlight(Default), INAV
- Mounting 30.5 x 30.5mm( 4mm hole diameter)
- Dimension 45.6(L) * 44(W) * 8mm(H)
- ESC Protocol DSHOT300/600
- USB Port Type - Type-C
- Weight 23.5g
Specifications
SPEEDYBEE F405 V4 FLIGHT CONTROLLER
- Product Name: SpeedyBee F405 V4 30x30 Flight Controller
- MCU: STM32F405
- IMU(Gyro): ICM42688P
- USB Port Type: Type-C
- Barometer: Built-in
- OSD Chip: AT7456E chip
- BLE Bluetooth: Supported. Used for Flight Controller configuration (MSP should be enabled with Baud rate 115200 on UART4)
- WIFI: Not supported
- DJI Air Unit Connection Way: Two ways supported: 6-pin connector or direct soldering.
- 6-pin DJI Air Unit Plug: Supported. Completely compatible with DJI O3/RunCam Link/Caddx Vista/DJI Air Unit V1, no wire is needed to be changed.
- Blackbox MicroSD Card Slot:
- *Betaflight firmware requires the type of microSD card to be either Standard (SDSC) or High Capacity (SDHC) under 32GB, so extended capacity cards (SDXC) are not supported (Many high-speed U3 cards are SDXC). Also, the microSD card MUST be formatted with the FAT16 or FAT32 (recommended) format. So, you could use any SD card less than 32GB, but the Betaflight can only recognize 4GB maximum. We suggest you use this 3rd party formatting tool and choose 'Overwrite format' then format your card.
- Current Sensor Input: Supported. For SpeedyBee BLS 60A ESC, please set scale = 400 and Offset = 0.
- Power Input: 3S - 6S Lipo(Through G, BAT pins/pads from the 8-pin connector or 8-pads on the bottom side)
- 5V Output: 9 groups of 5V output, four +5V pads and 1 BZ+ pad( used for Buzzer) on the front side, and 4x LED 5V pads. The total current load is 3A.
- 9V Output: 2 groups of 9V output, one +9V pad on the front side and other included in a connector on the bottom side. The total current load is 3A.
- 3.3V Output: Supported. Designed for 3.3V-input receivers. Up to 500mA current load.
- 4.5V Output: Supported. Designed for receiver and GPS module even when the FC is powered through the USB port. Up to 1A current load.
- ESC Signal: M1 - M4 on the bottom side and M5-M8 on the front side.
- UART: 6 sets(UART1, UART2, UART3, UART4(Dedicated for Bluetooth connection)), UART5 (Dedicated for ESC telemetry),UART6
- ESC Telemetry: UART R5
I2C: Supported. SDA & SCL pads on the front side. Used for magnetometer, sonar, etc. - Traditional Betaflight LED Pad: Supported. 5V, G, and LED pads on the bottom of the front side. Used for WS2812 LED controlled by Betaflight firmware.
- Buzzer: BZ+ and BZ- pad used for 5V Buzzer
- BOOT Button: Supported.
- [A]. Press and hold the 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.
- [B]. When the FC is powered on and in standby mode, the BOOT button can be used to control the LED strips connected to LED1-LED4 connectors on the bottom side. By default, short-press the BOOT button to cycle the LED displaying mode. Long-press the BOOT button to switch between SpeedyBee-LED mode and BF-LED mode. Under BF-LED mode, all the LED1-LED4 strips will be controlled by Betaflight firmware.
- RSSI Input: Supported. Named as RS on the front side.
- Smart Port / F.Port: Not supported
- Supported Flight Controller Firmware: BetaFlight(Default), INAV
- Firmware Target Name: SPEEDYBEEF405V4
- Mounting: 30.5 x 30.5mm( 4mm hole diameter)
- Dimension: 41.6(L) x 39.4(W) x 7.8(H)mm
- Weight: 10.5g
SPEEDYBEE 60A BLHELI_S ESC
- Firmware: BLHeli_S J-H-50
- PC Configurator Download Link: https://esc-configurator.com/
- Continuous Current: 60A * 4
- Burst Current: 80A (10 sec)
- TVS Protective diode: Yes
- External Capacitor: 1000uF Low ESR Capacitor (In the package)
- ESC Protocol: DSHOT300/600
- Power Input: 3-6S LiPo
- Power Output: VBAT
- Current Sensor: Support (Scale=400 Offset=0)
- ESC Telemetry: Not supported
- Mounting: 30.5 x 30.5mm (4mm hole diameter)
- Dimension: 45.6(L) * 44(W) * 8mm(H)
- Weight: 23.5g
Links
Includes
- 1x SH 1mm 25mm 8-Pin Cable (FC-ESC Connection)
- 1x SpeedyBee F405 V4 Flight Controller
- 1x M3 8.1mm Silicone Grommets (ESC)
- 1x M3 8mm Silicone Grommets (FC)
- 1x 35V 1000uF Low ESR Capacitor
- 1x SpeedyBee 60A BLHeli_S ESC
- 5x M3 30mm Iner-Hexagon Screw
- 1x 100mm XT60 Power Cable
- 1x 80mm DJI 6-Pin Cable
- 5x M3 Silicone O Ring
- 5x M3 Nylon Nut
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
4.1 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
Powerful and convenient
Color: Black, Size: L40 Ultra Gen 2
Really happy with this robot vacuum so far. The suction is strong and it picks up dust and pet hair easily. Mapping is accurate, and it cleans efficiently without missing spots.
The self-emptying dock is super convenient and saves a lot of time. Mopping works well for light cleaning too.Overall, a great upgrade and definitely worth it.
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Reviewed in the United States on May 13, 2026
★★★★★ 5
Better Than Expected
Color: Black, Size: L40 Ultra Gen 2
Been using the Dreame L40 Ultra Gen 2 for a few days now and honestly it’s better than I expected.The suction power is strong, especially for dust, hair, and small debris. The mopping performance is also surprisingly good compared to older robot vacuums.What I like most is the automation — auto-emptying, auto mop washing, and auto drying make daily cleaning much easier.Navigation is smart and smooth, and it rarely bumps into things.The only downside is the dirty water tank needs regular cleaning, and thick carpets still clean better with a traditional vacuum.Overall, it’s a great upgrade for busy people who want to keep their home clean without spending too much time on it.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
The experience has been excellent
Color: Black, Size: L40 Ultra Gen 2
Just received the Dreame L40 Ultra GEN2 and my first impression is very positive! The packaging feels premium, and the setup process was quick and easy through the app. The first mapping run was surprisingly fast, and the navigation was smart without randomly bumping into things.
The cleaning performance exceeded my expectations. It picked up dust and hair very well on the first run, and the mopping feature left the floors looking noticeably cleaner. The noise level is also lower than I expected, which is a nice bonus.
So far, I’m really happy with my first experience using it. It already feels like it’s going to save me a lot of time on cleaning, and I’m excited to keep using it!
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Reviewed in the United States on May 28, 2026
★★★★★ 4
Excellent robot, object avoidance needs work
Color: Black, Size: L40 Ultra Gen 2
We really enjoy this. It does a fantastic job. Pretty excellent object avoidance. Does not mop our rugs. It DOES NOT do a good job of avoiding cat poop, however. We had an incident where it mopped out floor with cat poop. Took us awhile to clean it out of the robot, get our floors clean, and get the smell out of our house. Other than that incident, we are very, very happy with it.
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Reviewed in the United States on May 10, 2026
★★★★★ 5
Smart, powerful, and genuinely makes daily life easier
Color: Black, Size: L40 Ultra Gen 2
I bought this robot vacuum recently and have been using it for several days now. So far, I’m really impressed. It is smart, powerful, and very convenient for daily cleaning.
The biggest highlight for me is how well it avoids obstacles. It can recognize and move around things in the house automatically, so I don’t have to constantly watch it or move everything out of the way before starting a cleaning session. That makes it feel much more worry-free compared with other cleaning tools.
The suction power is also very strong. For everyday floor cleaning, I honestly feel like it does an excellent job, even compared with my Dyson handheld vacuum. It picks up dust and debris well, and the cleaning result has been very satisfying.
Another feature I really appreciate is the scheduling. I can set it to clean automatically every day, and it just takes care of the floors by itself. This has saved a lot of time and effort for both me and my wife.
After using it, I feel like a good robot vacuum is almost as important as a dishwasher. It reduces a lot of daily housework and gives us more time to focus on work, hobbies, entertainment, and family life. It has quickly become a useful companion in our home.
I have only used it for several days, so I can’t speak to long-term durability yet, but my first impression is very positive. If you are looking for a smart, powerful, and hands-free cleaning helper, I would definitely recommend this robot vacuum.
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Reviewed in the United States on April 25, 2026