











AlienWhoop F4 Brushed Flight Controller
The Newest Alienwhoop F4 brushed FC V2.1 board is available.
AlienWhoop F4 flight controller is designed by Alienwhoop Team. BETAFPV Hobby and Alienwhoop team cooperate on the newest F4 brushed FC boards for the whoopers all over the world.
For customers from USA/UK/AU, you could get the FC board from local store.
- USA: Alienwhoop's Offical Store
- UK: Drone Junkie
- Austrialia: Micro Motor Warehouse
Bullet Points
AlienWhoop flight controller for Whoop, Blade Inductrix, Eachine, BetaFPV, and other micro brushed quadcopter frames.
- Choice of the top performing ARM processors:
- High-performance ST Microelectronics ARM Cortex-M4 core F4 168 MHz CPU (safely overclocked to 216MHz)
- Choice of top performing motion processors:
- Invensense MPU-6500 Six-Axis (Gyro + Accelerometer) low power consumption MEMS MotionTracking™ Device
- Latest BetaFlight firmware running the ALIENWHOOPF4 target
- Butterflight firmware supported (iNav under final testing)
- Overkill power MOSFETs capable of extreme brushed motor insanity (6mm, 7mm, 8mm, 8.5mm, and 10mm coreless scream)
- Multiple UARTs for receivers and other devices (e.g. LED strip, beeper)
- Dedicated UART with inverter for FrSky and Futaba SBUS
- UART pads on top conveniently located for SmartAudio VTX control
- 8MB onboard lightweight dataflash chip. Analyze your logs to optimize your PIDs and filters
- Note: pilots must supply external receiver. Officially supporting FrSky XM, XM+, R-XSR (SBUS), LemonRX DSM2 and DSMX (SBUS), and FlySky FS-A8S (iBUS) satellites.
Know more details here: https://github.com/betaflight/betaflight/wiki/Board---ALIENWHOOP
Acknowledgements: AlienWhoop V2.1 is inspired by AlienFlight F3 Quad Brushed V1
Note: It's important to try the stock settings, especially the PIDs and filters. They have been carefully selected to meet the challenge of optimizing whoop flight. Deviating from the suggested settings can cause unexpected flight behavior or fly-aways.
Based on Blackbox log analysis the tune was greatly improved over the V2! Some settings require the latest firmware features--so we've decided to ship the board with a pre-release of Betaflight 3.4 and settings that performed incredibly well indoors and outdoors with a variety of frames, motors, and props.
Specifications
- CPU: STM32F405
- Six-Axis: MPU6500
- Size: 26mm x 26mm, fully compatible with the Inductrix quad frame and mounting pattern
- Firmware version: Betaflight ALIENWHOOPF4 3.4.0
- Power Cable: 55mm, with JST-PH 2.0 connector, AKA PowerWhoop connector
- With 8M flashdata chip for Blackbox
- Weight: 3.5g
Receiver Configuration
This board supports most serial external receivers via UART3. Officially supporting FrSky XM and XM+ (SBUS), LemonRX DSM2 and DSMX (SBUS), and FlySky FS-A8S (iBUS) satellites.
Newest V2.1 board has integrated the UART inverter for SBUS protocol. So just connect to your Frsky/Futaba receiver normally.
F4 V2.0 doesn't have builtin inverter and the Alienwhoop F4 V2 board doesn't have it either. So we need to modify the receiver. Know more about the inverted signal on STMF4 in Oscarliang's blog.
Here is the connection diagram of Frsky XM and Alienwhoop F4 V2 board.
BETAFPV Support Freshdesk for Receiver Configuration.
Join Alienwhoop Team on Discord to hang out and pick up tips from other pilots as you build and configure your AlienWhoop. Building alone can be very frustrating and confusing so do yourself a favor and join the community.
Package
- 1 * Alienwhoop F4 brushed flight controller V2
- 4 * M1.2x4mm screws (Fit for stock Inductrix frame)
- 4 * M1.4x5mm screws (Fit for Beta75 etc 75mm frame)
- 4 * Anti-vibration ruber dampers
- 1 * 55mm PH-JST 1.25 power cable pigtail
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.