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What is the update of the ELRS 2.4G V2.0 board?
- Support both 1S and 2S battery now. Only 1S supported on V1.0.
- Use SPI ExpressLRS 2.4 receiver with Betaflight firmware.
- Modify the shape of the board to support 85mm whoop frame. Only toothpick frame supported on V1.0.
- Use the lighter and smaller SH connector instead of USB Type-C.
F4 1S 12A AIO Flight Controller - A 1S 12A FC for building lightweight 3" toothpick drones like HX115 SE Toothpick Drone and HX115 LR Toothpick Drone. If you want to try a bigger FPV drone than 65mm/75mm on 1S power, and still want smooth and powerful flying actions, this FC that integrates 1S 12A ESC is definitely your best choice.
Now the default firmware for F4 1S 12A AIO Brushless Flight Controller is updated to Betaflight V4.3.0 Official version, which supports ELRS V2.0. Please check the below link to download the firmware.
Download the betaflight_4.3.0_BETAFPVF4SX1280.hex
Tons of ExpressLRS items are available now!
Bullet Point
- F4 1S 12A AIO Flight Controller is the best choice for building ultra-lightweight 3" toothpick drones like HX115 SE FPV Quad.
- Most of the 1S flight controllers on the market come with 5A ESC by now, but this FC especially integrates 1S 12A ESC, it can provide more sufficient power for 3" toothpick drones.
- Built-in current meter, 2 programmable RGB LEDs, and SPI Frsky receiver. At the same time, all the pads are left for the external receivers with UART1 and UART2, for buzzers, etc.
- Whoop mounting hole pattern, be compatible with most 1S 3" frames. Large pads are reserved for solder motor cables, this design will make solder easier.
Specification of FC
- Item: F4 1S 12A AIO FC
- Weight: 4.74 g (without power cable and BT2.0 connector)
- CPU: STM32F411CEU6 (100MHZ )
- Six-Axis: MPU6000 (SPI connection)
- Firmware version: betaflight_4.2.0_STM32F411
- OSD: Built-in BetaFlight OSD (STM32 controls OSD chip over SPI in DMA mode)
- Receiver: Integrated SPI Frsky Receiver / Futaba Receiver / ELRS Receiver
- Motor Pin Connecter: 1.25mm Header Pins
- Mounting Hole Size: 26mm x 26mm (suitable for whoop pattern mounting hole)
- USB Port: Type-C (V1.0 board), SH1.0 4-Pin (V2.0 board)
Specification of 1S 12A ESC
- Built-in ESC with 12A continuous and peak 25A current
- Input voltage: 1S Lipo (V1.0 board), 1S-2S (V2.0 board)
- ESC firmware: Z_H_30_REV16_7.HEX
- Signal support: D-shot150, D- shot300, D-shot600, Oneshot125, Multishot, PWM
This new BLHeli_S firmware (named Z_H_30_REV16_7.HEX) is supported by BLHeli Configurator, BLHeliSuite, and Bluejay Configurator for setup.
For download and flash, update to the newest BLHeliSuite-16714902a to support this ESC firmware online. For BLHeli Configurator or Bluejay Configurator, you need to load it local. The ESC firmware is available for download here.
Diagram for F4 1S 12A AIO FC
Below is the diagram for the SPI Frsky version board. UART1, UART2, and SBUS pads are left for external receivers like Frsky XM+, TBS Nano receiver so that a long receiver range is available.
Buzz pads (BUZZ+ and BUZZ-) are invalid directly. It needs some modification to make it works.
Below is the diagram for ELRS 2.4G V1.0 board.
Below is the diagram for ELRS 2.4G V2.0 board.
The current meter is integrated on the FC board. Here is the configuration in Betaflight Configurator.
12A 1S ESC
Should we really need a 12A ESC for 1S drones? If it is a 65mm or 75mm Whoop drone-like Meteor65, 5A ESC is enough for all actions. But how about with 3" propellers and 1102/1202.5 motors? Still, want smooth and powerful flying actions? The 5A ESC has developed about 3 years ago and was designed for whoop drones with 0603/0802 motors. For the past year, the BETAFPV team has been cooperating with BLHeli author Steffen on the 12A 1S ESC for 3" toothpick drones. Finally, it is here!
It marks "1-2S" on the board, could this FC board support 2S?
The V1.0 board is NOT support 2S battery. Please choose the V2.0 board for both 1S and 2S battery supported.
ELRS 2.4G RX
This board integrates the receiver with the most popular radio link ExpressLRS in 2021. ExpressLRS aims to achieve the best possible link performance in both speeds, latency, and range. Know more about the ExpressLRS project on Github or join the discussion in the Facebook Group.
This board is designed for long-range 3inch ultralight toothpick drones or 2S whoop drones. If you want to try ExpressLRS on 65mm/75mm whoop drones, please stay tuned on our F4 1S FC board with a built-in SPI ExpressLRS receiver.

How to Bind with Betaflight FC with ExpressLRS Receiver.
How to update the ELRS RX on the AIO board. (For ELRS 2.4G V1.0 version, ELRS receiver communicates with FC F411 via CRSF protocol. )
Betaflight Firmware and CLI (SPI ELRS 2.4G)
This paragraph is only for ELRS 2.4G V2.0 board, with SPI ELRS 2.4G receiver integrated.
Since Betaflight has not yet released the official firmware that could supports the SPI ExpressLRS protocol, the current version is the Beta version. Please use the firmware and the CLI dump file below to recovery the FC board if needed. Betaflight will update to their official target soon. Please feel free to contact with us if you have any issues with this Beta version Firmware.
It is normal that there is no any option on Betaflight Configurator Receiver. As show below, the checkbox is blank.
Please change the “PID loop frequency” to “4KHZ” , sometimes it would make the SPI receiver not working correct while the value is “8KHZ”.
New released firmware BTFL_4.3.0_BETAFPVF4SX1280_0265565fa uses external GPIO interrupt triggers to process ELRS data reception, increasing the stability of the signal link. Now it can perfectly support LiteRadio 2 SE 500Hz link and modify the accuracy of signal strength.
The new CLI file is named BTFL_cli_F4 12A ELRS_V2.0_NEW. Please check.
Note: The new firmware supports only ELRS 1.0.0, 1.0.1, 1.1.0, 1.2.0, 1.2.1.
Download the firmware and CLI dump file for the F4 1S 12A FC (ELRS 2.4G) board.
How to Bind with Betaflight FC with SPI ExpressLRS Receiver.
More details and discussion on Github about SPI ELRS receiver.
SPI Frsky RX
Come with the build-in SPI Frsky Receiver (CC2500 chip), F4 1S 12A AIO FC can be compatible with Futaba S-FHSS, Frsky D8, and D16 protocol. The default protocol is configured to Frsky D16 FCC out of the factory. Pilots could set up the protocol according to your own need in Betaflight Configurator.
Configuration |
Protocol |
FRSKY_D |
Frsky D8 |
FRSKY_X |
Frsky D16 FCC (ACCST 1.X version) |
FRSKY_X_LBT |
Frsky D16 LBT (ACCST 1.X version) |
SFHSS |
Futaba S-FHSS |
How to Bind with Betaflight FC with SPI Frsky Receiver.
Recommend Parts
If you want to try the popular ExpressLRS receiver version for long-range performance, highly recommend you to check the items for the ExpressLRS series.
- Recommend for drones like HX115 SE Toothpick Drone / HX115 LR Toothpick Drone
- Battery: BT2.0 450mAh 1S 30C Battery
- Motor: 1102 18000KV motor
- Propeller: HQ3020 2-blade props
Package
- 1 * F4 1S 12A AIO FC
- 4 * Anti-vibration rubber dampers
- 4 * M2 x 10mm screws
- 4 * M2 x 10mm screws
- 8 * M2 screw nut
- 1 * BETAFPV dipole T antenna (2.4G/46mm, only for ELRS RX version board)
- 8 * PH-1.25 connector for motor (not soldered, only for ELRS RX version board)
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.
Good service
I am flying with 1103 motor and 2S battery on HX115LR frame.
It's in good shape and very fun.
ESCが5Aの頃はよく焼けて壊れていたけど、12Aになってから全然壊れなくなって、安心して飛ばせるようになりました
ELRS一体型というのも嬉しいポイントです
F4 1S 12A AIO Brushless Flight Controller
I even managed to get RPM filter / bidirectional dshot working.
Flash bluejay and then
set dshot_bitbang = OFF
in the betaflight CLI