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Description
BetaFPV F4 1S 5A AIO Brushless Flight Controller V3 (ELRS 2.4G)Features Betaflight serial passthrough. It is convenient for pilots to flash any version of ELRS RX firmware and especially can flash ExpressLRS V3. 0 without updating flight controller firmware. The SPI Frsky version board reserves an SBUS port and a UART port, which is available for the SBUS protocol receiver or other external receivers. Built in an 8MB flash memory chip dedicated to Blackbox logging. It's an extremely powerful tool for tuning and
Features
- Betaflight serial passthrough. It is convenient for pilots to flash any version of ELRS RX firmware and especially can flash ExpressLRS V3.0 without updating flight controller firmware.
- The SPI Frsky version board reserves an SBUS port and a UART port, which is available for the SBUS protocol receiver or other external receivers.
- Built-in an 8MB flash memory chip dedicated to Blackbox logging. It's an extremely powerful tool for tuning and troubleshooting an FPV drone.
- Integrated motor pin connectors, it is easy to install motors without soldering work.
- Particular design with only 3.6g ultralight weight, reasonable layout, and easy to build. With a 26*26mm mounting hole size, it is fully compatible with the whoop frame in the current market.
Specifications of FC
- CPU: STM32F411CEU6 (100MHZ)
- Six-Axis: BMI270
- Built-in Receiver: Serial ExpressLRS 2.4G/SPI CC2500 (Frsky)
- Receiver antenna: Line antenna
- FC Size: 30*30mm
- Mounting Hole Size: 26*26mm
- Firmware version: betaflight_4.3.1_BETAFPVF411 (ELRS)/betaflight_4.2.11_BETAFPVF411RX (Frsky)
- OSD: Built-in BetaFlight OSD
- Blackbox: 8MB
- Recommend VTX: >=200mW, like BETAFPV M03 350mW VTX or TBS Unify VTX
- Power Cable: 55mm, with BT2.0 connector
- Weight: 3.6g(ELRS)/3.7g(Frsky), without power cable and BT2.0 connector
Specification of ESC
- Power supply: 1S
- Current: 5A continuous and peak 6A (3 seconds)
- ESC firmware: A_X_5_.HEX for BB51 BLHeli_S hardware
- Signal Support: D-shot150, D-shot300, D-shot600, Oneshot125, Multishot, PWM
F4 1S 5A flight controller with BB51 ESC hardware could flash the Bluejay ESC firmware now, which is based on BLHeli_S revision 16.7. With Bluejay ESC firmware, it supports bidirectional D-shot and RPM filtering in Betaflight, offers 24KHz, 48KHz, and 96KHz fixed PWM frequency for options, and custom start-up melodies
Pinout
Included
- 1 * F4 1S brushless flight controller (BT2.0 Connector)
- 4 * M1.2x4mm screws
- 4 * M1.4x5mm screws
- 4 * Anti-vibration rubber dampers
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
4.2 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 5
Good watch at a good price
Color: White/Silver-Tone/Digital
Timex watches are reliable. This model was well priced, easy to clean, and keeps good time.
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Reviewed in the United States on May 18, 2026
★★★★★ 5
Instructions for Timex 33mm Watch
Color: Blue/Silver-Tone/Digital, Color: Blue/Silver-Tone/Digital
Watch is good. No instructions included so I found some and posted them above. Bought this for 10yr old and fits perfectly.
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Reviewed in the United States on February 24, 2026
★★★★★ 5
Watch
Color: Black/Silver-Tone/Digital
Keep good time. I used this when I was working.
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Reviewed in the United States on April 26, 2026
★★★★★ 1
A waste
Color: White/Silver-Tone/Digital
If I could I would give it zero stars. It was running when I received it so who knows how long the battery has left. No instructions were included.
The setup is impossible unless you’re into computerized “smart” crap. I looked up how to do that and it’s way too involved for a watch to tell me what the time is. I don’t want a personal dictator, I just wanted a watch I could wear and know what time it is.
Too much hassle to return. It’s going in the trash. Total waste of time energy and money. Zero stars.
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Reviewed in the United States on July 12, 2025
★★★★★ 4
Favorite Watch
Color: Black/Silver-Tone/Digital, Color: Black/Silver-Tone/Digital
I have been using this same kind of watch for 10+ years. I like the belt like strap and the small size. I also appreciate how it has a light on it, the date, and the stop watch. I haven’t had any issues with the battery. These watches have held up well for me although I try to avoid getting them wet. The buttons are hard to press when you first get them but get a little easier to press over time. I still have issues remembering how to change the time and typically have to look up how. The silver parts on the front do wear out over time and turn copper colored. I wore one of these watches for around 5 years before buying a new one when the band which holds the excess space from the band broke. Attached is a picture of the watch that I wore for at least 5 years and a brand new one that I bought.
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Reviewed in the United States on April 11, 2026