Air Brushless Flight Controller(4IN1)
Air Brushless Flight Controller(4IN1)
Air Brushless Flight Controller(4IN1)
Air Brushless Flight Controller(5IN1)
Air Brushless Flight Controller(5IN1)
Air Brushless Flight Controller(5IN1)
Air Brushless Flight Controller(4IN1)
Air Brushless Flight Controller(4IN1)
Air Brushless Flight Controller(4IN1)
Air Brushless Flight Controller(5IN1)
Air Brushless Flight Controller(5IN1)
Air Brushless Flight Controller(5IN1)

Air Brushless Flight Controller

Regular price $49.99 USD Save $-49.99 USD
-1378 in stock
Air Brushless Flight Controller, the first 1S FC that utilizes the STM32G473CEU6, experienced a remarkable 55% increase in computing speed and lightning-fast response times, surpassing the F411. Equipped with the industry-leading ICM42688P gyro and onboard 5.8G 25mw~400mw VTX, it offers both 4IN1 with 2.9g and 5IN1 with 3.6g Versions, which takes your drone's posture and movement accurately to the next level. Immerse yourself effortlessly in the drone world of Finger-Tip control. Unmatched value and undeniable superiority with it, leave most of the competition in the dust. It will be the advanced choice for future ultralight 1S whoop drones!

Air Brushless Flight Controller
Note: BETAFPV is immensely grateful to this testing team including ''Don Johnson, Tokyo_Dom, BLACKHORSE, wKich, Travis, Ciotti FPV, Tdog, Anthony Knight, Issac, Albert, sub250g, Tyranttfpv, Wk Breeze'' for valuable ideas in the design of this Air Brushless Flight Controller.

Attention

  • VTX Power: Higher VTX power consumes more energy and generates more heat, reducing flight time. For better flight time in indoor scenarios, use 25~100mW power. 
  • The calibrated power measured after temperature stabilization (stabilization condition: more than 60 seconds after powering on the flight controller) is: when set to 25mW, the output power is between 14dBm±0.8dBm (21mW to 30mW), which meets the normal standard. The following is the 5IN1 Air FC test data with the VTX set to 25mW, the power data is tested at different times on the R1, R3, R5, and R7 frequency points.
  • The 4IN1 Air FC V1.1 version has already solved the VTX Output Power anomaly problem.
  • Motor Wiring: Only soldering is supported for motor wiring on the flight control. Be careful to ensure the temperature of the soldering iron is maintained below 370℃ and limit the soldering duration to 1~2 seconds.
Air Brushless Flight Controller

Bullet Point

  • Air Brushless Flight Controller, the first 1S FC that utilizes the G473 processor, experienced a remarkable 55% increase in computing speed and lightning-fast response times for precise racing and complex freestyle maneuvers, surpassing the F411.
  • Higher integration yet lightweighter design, featuring a custom miniature OSD chip. Weighing only 2.9g (4IN1 Version) or 3.6g (5IN1 Version), it offers extra UART port options for effortless function expansions, adapting flawlessly to any flight scenario.
  • Default integrated onboard 25-400mW VTX. Streamlines installation saves space, reduces weight, and boosts convenience for VTX and FC adjustments. The 5IN1 Version even integrates the Serial ELRS 2.4G RX.
  • Elevate your drone's precision with the industry-leading ICM42688P gyro, integrated accelerometer, cutting-edge sensor calibration, and filtering algorithms, and a sample rate of up to 8K, which takes the drone's posture and movement accurate and precise drone to the next level.
  • Unlock extensive flight data recording and analysis with an impressive up to 16MB capacity black box. Maximize performance and diagnose faults effectively, leveraging the full potential of your drone.
Air Brushless Flight Controller

Specification of FC

  • Weight: 2.9g(4IN1 Version) / 3.6g(5IN1 Version) 
  • Mounting Hole Size: 26mm x 26mm 
  • CPU*: STM32G473CEU6 (168MHz) 
  • Six-Axis: ICM42688P (SPI connection) 
  • Blackbox Memory: 16MB
  • Sensor:  Voltage&Current
  • 5V BEC*: 5V 3A
  • USB Port: SH1.0 4-Pin
  • Built-in ESC with 5A continuous
  • RX: Serial ELRS 2.4G (V3.4.3) (Only 5IN1 Version)
  • 4IN1 Version: FC+ESC+OSD+VTX 
  • 5IN1 Version: FC+ESC+OSD+VTX+RX

Specification of ESC

  • Input Voltage: 1S
  • FC Firmware Version: Betaflight_4.5.0_BETAFPVG473
  • ESC Firmware: A_X_5_96KHz_V0.19.hex for BB51 Bluejay hardware
  • Signal Support: D-shot300, D-shot600

Specification of VTX

  • Output Power: 25/100/200/400/PIT
  • Frequency: 5.8GHz 48 channels, with Raceband: 5658~5917MHz
  • Channel SEL: SmartAudio2.0
  • Modulation Type: FM 
  • Frequency Control: PLL 
  • All Harmonic: Max -50dBm 
  • Frequency Stability: ±100KHz (Typ.) 
  • Frequency Precision: ±200KHz (Typ.) 
  • Channel Carrier Error: ±1.5dB
  • Antenna Port: 50 Ω 
  • Operating Temperature: -10℃~+80℃

Diagram

Below is the diagram for the Air Brushless Flight Controller (4IN1 Version).
Air Brushless Flight Controller
Air Brushless Flight Controller
Below is the diagram for the Air Brushless Flight Controller (5IN1 Version).
Air Brushless Flight Controller
Air Brushless Flight Controller

Comparison Between G473 and F411

Say goodbye to limitations and embrace the cutting-edge technology of the G473 flight controller for an unparalleled flight experience. Air Brushless Flight Controller features up to 168MHz superior CPU Clock Speed and 4 richer serial ports, enabling lightning-fast response times and advanced computing power, making it ideal for demanding flight, which takes your flying experience to the next level and demonstrates outstanding performance, surpassing all 1S FC options available on the market at present. 

4IN1&5IN1 

Choose this higher integration Air Brushless Flight Controller, for an ultra-light 1S whoop installation, tailored to meet the needs of discerning pilots. It is default integrated onboard 25-400mW VTX, the 5IN1 Version that integrates FC+ESC+OSD+VTX+RX goes a step further by integrating the Serial ELRS 2.4G RX, streamlining installation to save space and reduce weight, and enhancing convenience for VTX and FC adjustments. The 4IN1 Version removes the RX port for added versatility, providing pilots with more external RX options. 

Air Brushless Flight Controller

Serial ELRS 2.4G RX

Serial ELRS 2.4G RX uses the Crossfire serial protocol (CRSF protocol) to communicate between the receiver and the flight controller board. So the Serial ELRS 2.4G RX is available to support upgrading to ELRS V3.0 with no need to flash Betaflight flight controller firmware. Enter binding status by power on/off three times.

  • Plugin and unplug the flight controller three times;
  • Make sure the RX LED is doing a quick double blink, which indicates the receiver is in bind mode;
  • Make sure the RF TX module or radio transmitter enters binding status, which sends out a binding pulse;
  • If the receiver has a solid light, it's bound.

The Serial ELRS 2.4G RX can be updated via Wi-Fi or Betaflight serial passthrough. Here is the way to update the Serial ELRS 2.4G RX firmware through passthrough.

  • Plug in your FC to your computer, but do NOT connect to betaflight configurator;
  • Choose target "BETAFPV 2.4GHz AIO RX";
  • Flash using the BetaflightPassthrough option in ExpressLRS Configurator.

How to flash firmware via Wi-Fi here.

Betaflight Firmware and CLI 

Betaflight official developers recommend using version 42688 of the gyroscope, and many issues with ICM42688 have been fixed in version 4.5.0. Please learn more from version 4.5.0.

Bluejay ESC Firmware

With BB51 ESC solution,  Air Brushless Flight Controller is based on A_X_5_96KHz_V0.19.hex for BB51 Bluejay hardware, it supports D-shot300, D-shot600, and even RPM filtering in Betaflight, offers 24KHz, 48KHz, and 96KHz fixed PWM frequency for options, and custom start-up melodies. 

DO NOT flash the firmware with a shorter interval, otherwise, there will be a certain chance of stalling and burning the flight controller.

Connecting External RX/VTX

Please note that UART2 has connected to the VTX by default. This FC reserves 3 complete full-featured serial ports that can be used for external CRSF/SBUS receivers, GPS, HD VTX, or other serial devices. You can refer to the below pictures. 

Air Brushless Flight Controller
Air Brushless Flight Controller
Air Brushless Flight Controller

    Attention

    • VTX Power: Higher VTX power consumes more energy and generates more heat, reducing flight time. For better flight time in indoor scenarios, use 25~100mW power.
    • Motor Wiring: Only soldering is supported for motor wiring on the flight control. Avoid terminal plugging.
    • VTX Antenna: Connect and install the image transmission antenna before powering on the flight control. Alternatively, set transmission power to 0 to avoid burnout.

    Recommend Parts

    Package

    • 1 * Air Brushless Flight Controller
    • 1 * 2.4g Antenna (Only 5IN1 Version)
    • 1 * Type-C to SH1.0 Adapter 
    • 1 * SH1.0 4Pin Adapter Cable
    • 1 * 5.8g VTX Antenna
    • 1 * BT2.0 U Whoop Cable Pigtail | 40mm
    • 4 * M1.4*4 Self-tapping Screws
    • 4 * Shock Absorbing Ball

    Note: The below packaging pic is the 4IN1 Version.

    Air Brushless Flight Controller
    Note: The below packaging pic is the 5IN1 Version.
    Air Brushless Flight Controller

    Shipping Method & Delivery Times

    We offer the following shipping options:

    Expedited Shipping: Estimated delivery in 3-7 working days via DHL/FedEx.

    Standard Shipping: Estimated delivery in 12-30 working days via registered mail.

    Please expect a processing time of 1-2 business days (Mon–Fri, excluding holidays).

    IMPORTANT:

    • Delivery estimates are not guaranteed and may vary due to shipping address, customs clearance and carrier delays.
    • Battery orders: Expect more business days for safety inspections.
    • Out-of-stock items: Ships in 1–2 weeks (we’ll notify you via email).
    • Address errors: Double-check your shipping details during checkout. Incorrect/missing addresses cause delays or failed deliveries.

    Shipping Costs

    1. Standard Shipping

    We offer free standard shipping on all orders of $99.99 or more. For orders between $20 – $99.98, a flat rate of $5 applies. For orders under $20, a flat rate of $10 applies.

    IMPORTANT: Starting April 24, all U.S. orders will include a flat $10 fee to offset recent increases in shipping costs and tariffs. To learn more details, check U.S. Tariff Policy Change: What You Need to Know.

    2. Expedited Shipping

    We offer expedited shipping service worldwide including islands area. Shipping fees are calculated automatically at checkout based on your location and order weight.

    IMPORTANT: Customers are fully responsible for customs duties, taxes, customs clearance and other costs incurred when choosing expedited shipping. If a shippemnt is returned due to unpaid import fees, return shipping costs will be charged to the customer, and no refunds will be issued for the original order.

    3. Additional Shipping Fee

    There are certain situations where you may be required to pay extra shipping fees.

    • Products with large dimensions or weight: Products with large dimensions or weight are excluded from free shipping rule due to carrier dimensional weight calculations. (Including: FPV Goggles, BETAFPV Gates & Flags, RTF FPV Whoop Kits, LiteRadio Series radio transmitter, Storage Cases)
    • Remote countries/regions: Orders shipped to remote countries or regions (e.g., islands, rural areas) may require adjusted shipping fees based on carrier surcharges.
    • Expedited Shipping with Batteries: Expedited Shipping orders containing more than 2 batteries that exceed the limits outlined in our Battery Shipping rule below will incur extra fees to cover separate battery shipments.
    • Reshipping Costs: Packages returned due to incorrect addresses or customs clearance failures (e.g., unpaid duties) will be subject to reshipping fees. Customers must cover these costs before redelivery.

    Shipping Rules

    1. Battery Shipping

    Some countries or remote regions are forbidden to ship stand-alone batteries due to restricted customs and safety regulations. If your location restricts battery shipments, we will notify you promptly and adjust your order accordingly. Review the 2. Countries/Regions Where Battery or Drone Shipping Is Restricted below for details.

    Expedited Shipping Battery Shipping: Stand-alone batteries are prohibited for expedited shipping. However, drones packed with less than or equal to two batteries or devices with bulit-in batteries (e.g., transmitters, goggles) may still qualify for expedited delivery.

    Battery Type

    International Expedited Shipping

    No batteries

    Accepted

    Contained in

    Accepted

    Packed with (no more than 2 batteries)

    Accepted

    Stand-alone

    Prohibited

    Battery Type Definitions

    • Stand-alone: Package ONLY contains batteries or cells; NO equipment.
    • Packed with: Package contains equipment + cells or batteries that are NOT installed in the equipment. For example, BNF drones with batteries or RTF drone kits.
    • Contained in: Package has lithium batteries contained in equipment (properly installed in the equipment they are intended to operate). For example, radio transmitter or goggles.

    2. Countries/Regions Where Battery or Drone Shipping Is Restricted

    Due to customs regulations and carrier restrictions, we cannot ship drones or batteries to the following destinations:

    • Drones Restricted: Brazil, Saudi Arabia
    • Drones & Batteries Restricted: Armed Forces Europe (APO/FPO/DPO), P.O. Box, Dominican Republic, Maldives
    • Batteries Restricted: South Africa, Cyprus, Cote d'Ivoire, Brunei, India, Argentina, Turkey, Serbia, Iceland, Guadeloupe, Georgia, Belarus, Bosnia and Herzegovina, Montenegro, Saint Barthelemy, Oman, Armenia, Qatar, Costa Rica, Kuwait, Jamaica, Malta, Jersey, New Caledonia, Kyrgyzstan, Burundi, French Guiana, Mauritius, Greenland

    Note: The list is subject to change without prior notice due to evolving customs regulations, carrier restrictions, and local legislation.

    3. Address Requirements

    To ensure successful delivery, please carefully follow these requirements based on your location. Incorrect or incomplete information may cause delays or failed deliveries.

    Japan & Germany: Street name and number, apartment/unit number (if applicable) are required. Omissions are not allowed.

    Australia & United States: Provide the postal code that matches the city, and ensure that the city name is written correctly without any omissions or abbreviations.

    Hong Kong, Macao, Taiwan, and Mainland China: Address must be written in Chinese characters.

    Tax ID Required for Customs Clearance for orders to the following countries:

    • South Korea: Personal Clearance Code
    • Brazil: Cadastro de Pessoas Físicas (CPF)
    • Chile: Tax Identification Number (RUT)
    • India: Aadhaar Card/Pan Card/KYC number
    • Mexico: TAX ID (RFC) / Personal ID (CURP)
    • Indonesia: Nomor Pokok Wajib Pajak (NPWP)

    Delayed Or Rejected Orders Liability

    BETAFPV is not liable for delayed or rejected packages resulting from circumstances beyond our reasonable control. This includes, but is not limited to:

    Delays of shipments to remote regions: Shipping time might be delayed for 3-7 days to remote regions or over 7 days to island destinations like Hawaii, Puerto Rico, Canary Islands, etc.

    Customer-caused delay or delivery failure: These actions include, but are not limited to address changes after shipment, incorrect/incomplete addresses, invalid contact information, and refusal to accept delivery, etc.

    Force majeure: It means unforeseen, inevitable, or insurmountable objective situation and other objective conditions that cause delayed shipping, including, but not limited to: national or regional air or ground transportation system controls or interruptions (e.g., weather reasons), communication system interference or malfunction, government actions, postal administration policy changes, wars, earthquakes, typhoons, floods, fires, heavy rain, heavy fog, and other similar events.

    Packages cannot be delivered to your address during weekends, national holidays, and festivals.

    The address is a school, hotel, unit, or residential community where the courier has no access. Please provide a permanent street address.

    *Please confirm your address before payment. If corrections are needed, please contact BETAFPV customer support in a timely manner.

    Tracking Your Package

    Once your order ships, you’ll receive a notification email with the tracking number. You can also check your order status by logging into your BETAFPV account dashboard, where shipped orders display tracking links based on your selected shipping method. If your order status shows “Shipped” but no tracking details are visible, this means your package is prepared and awaiting carrier pickup. A status of “Processing” indicates we’ve received your order and are preparing it for shipment.

    Please note that you may receive more than one Shipment Notification E-mail if item(s) from your order are shipping separately.

    You can also enter the tracking number to check your package shipment status below. If you encounter issues tracking your order, contact BETAFPV customer support for assistance.

    FAQ

    1. How long until my order ships?

    All orders typically will be processed within 1-2 working days after your payment. Delays may occur during high order volumes or backorder situations.

    If there will be a significant delay in the shipment of your order, we will contact you via email. Please make sure your email address is active and remember to check the email for updates.

    2. After I place an order, how do I change my order before shipment?

    Country selections cannot be modified after checkout. If you need to change these details, please cancel the order and purchase again. Please contact BETAFPV customer support within 24 hours after placing the order if you need to change order product information or address.

    3. How do I cancel after I have placed the order, but it has not shipped?

    You can contact BETAFPV customer support for canceling if your order has not been shipped. If your order has been shipped less than 24 hours, please contact the customer service and we will try to hold your order from the shipping company.

    It is impossible to cancel if your order has been shipped over 24 hours.

    4. Under what circumstances will BETAFPV cancel an order unilaterally?

    We reserve the right to cancel orders for:

    • Unavailable product(s): BETAFPV tries to contact customers and does not get a reply in 7 days.
    • High-risk Order(s) identified by banks/Paypal: To ensure your card safety, we will cancel your order.
    • Unshippable destinations: If we are not able to ship to your location, your order will be canceled.

    *BETAFPV reserves the right to update this policy. Last revised May 2025.

    Customer Reviews

    Based on 10 reviews
    60%
    (6)
    10%
    (1)
    30%
    (3)
    0%
    (0)
    0%
    (0)
    D
    David

    Super!!!

    大久保 武志
    VTX is weak

    If the aircraft crashes, the VTX is likely to be damaged.

    B
    Brian B
    Air Brushless FC

    The flight controller needed to have new firmware flashes right out of the box before it would connect properly. Flashing required a separate software tool before BetaFlight could flash properly. Emailed BetaFPV, but the response was difficult to understand (language barrier). Detailed pinouts were not available online other than what you see on the website, so make sure it contains all the details you need for your build.

    Once the kinks were worked out. It paired nicely with my FrSky receiver, and delivers some awesome performance for my tiny whoop. Paired with a 1s 750mAH Lava battery and a Meteor 75 frame, it cooks.

    In the age of 2 day shipping in the United States, this took weeks to arrive. Know you are purchasing directly from China, and tracking information will not update until it gets to the United States. The shipping method seems archaic.

    A
    Alexander Strakh
    Update to my previous review

    Flies really great, the only thing I had to do was to change rates a bit for my style!
    I fixed my issue with the motor by resoldering the motors and updating the firmware to the latest version.

    A
    Alexander Strakh
    Looks good and promising, but was broken

    The flight controller looks good and promising, but on my board one ESC was not working properly, so I had to ask for replacement.