F4 2-3S 20A AIO FC V1
Regular price $54.99 USD
Bullet Point
- Designed for HD VTX, it features a dual 9V@2A for DJI O3 and 5V@3A for external device BEC solution to prevent screen blackout on the DJI O3 due to low voltage during throttle increase.
- It includes a new DJI O3 6-pin PMU for easy installation without soldering, reducing assembly complexity. Newbie friendly.
- The power range of 2-3S provides increased thrust and improved control with a 20A ESC featuring a single NMOS for continuous current capability.
- The upgraded onboard receiver allows selective power cutoff for saving power and offers additional UART TX3 and RX3 ports for connecting the external device.
- Redesigned solder pad layout ensures larger, more secure pads for easy and reliable soldering, while the relocated USB port at the rear facilitates computer tuning.
- It features an STM32F405RGT6 chip, Integrate Serial ELRS 2.4G receiver, 16M black box, barometer, current meter, reserve 3 complete serial ports and a standard SBUS, support GPS, HD VTX, external receiver, and other equipment.
Specification
- Weight: 5.58g (without motor connectors and power cable),5.92g (with motor connectors)
- Mounting Hole Size: 26mm x 26mm
- CPU*: STM32F405RGT6 (168MHz)
- Six-Axis: ICM42688P (SPI connection)
- RX: Serial ELRS 2.4G Receiver
- RX firmware version: BETAFPV AIO 2400 RX ELRS V3.3.0
- Antenna: Enameled wire
- Blackbox Memory: 16MB
- Sensor: Barometer (BMP280/DSP310), Voltage & Current
- 5V BEC*: 5V 3A@8V supply
- 9V BEC*: 9V 2A@8V supply
- USB Port: SH1.0 4-Pin
- Built-in ESC with 20A continuous and peak 25A current
- ESC input voltage: 2-3S
- FC firmfware version: Betaflight_4.4.1_BETAFPVF405
- ESC firmware: C_X_70_48_V0.19.2.hex for BB51 Bluejay hardware
- Signal support: D-shot300, D-shot600
*The output current of BEC will decrease as the temperature increases
Diagram
Comparison
We upgraded the FC from F4 1S 12A AIO FC V3 to F4 2-3S 20A AIO FC V1. The upgraded FC features an ESC with a pulse overcurrent capacity of 25A, ensuring stable operation of the flight controller even in the event of motor stalling. The addition of a 9V 2A BEC power supply ensures the stable operation of the DJI O3 HD VTX when the battery voltage is low. It also includes a DJI O3 6-pin PMU allowing for connection to HD VTX without soldering. It integrates features such as a 16MB black box, with support for GPS, external receivers, and other devices. The redesigned solder pad layout and USB connector make installation and maintenance easier and more convenient.
| F4 1S 12A AIO FC V3 | F4 2-3S 20A AIO FC V1 | |
| Weight | 4.23g | 5.58g |
| BEC |
5V@3A for External RX |
5V@3A for External RX 9V@2A for DJI O3 |
| Connector for DJI O3 | Not support | Support |
| ESC Current | 12A | 20A |
| ESC Input Voltage |
1-2S | 2-3S |
| Number of Serial Ports | 2*UART, 1*SBUS | 4*UART, 1*SBUS |
Note: If you use the F4 2-3S 20A AIO FC V1, the serial port of the SBUS receiver is UART5 while F4 1S 12A AIO Brushless FC V3 is UART6.
F4 2-3S 20A AIO FC V1 also has extended the USB port to the end for easier parameter adjustment and wiring. And a new DJI O3 6-pin PMU has been added for convenient installation and maintenance.
FAQ
Power cutoff: Removing the chip bead disconnects the power supply, and to reuse the onboard ELRS receiver, soldering the solder pads together restores power.
UART3 release: Removing two resistors on the solder pads releases UART3. The left side is TX3, and the right side is RX3. To reconnect, solder the solder pads together when reusing the onboard ELRS receiver.
Voltage Switch: The HD VTX connector defaults to 9V. The chip bead is soldered between the 9V pad and the middle pad. To use WalkSnail Avatar HD mini 1s and Lite, please ensure the power supply voltage is 5V. Remove the chip bead first from the 9V pad and solder it between the middle pad and the 5V pad. Alternatively, you can use solder instead the chip bead to switch between the 5V and 9V pads.
Motor choice: Avoid selecting motors with excessively high KV ratings, as motors above 20,000KV are prone to burn.
Betaflight Firmware and CLI
FC firmware: Betaflight_4.4.1_BETAFVF405
Download the firmware and CLI dump file
Reference link:
ESC Firmware
With BB51 ESC solution, F4 2-3S 20A AIO FC V1 is based on BLHeliSuite16714903 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. F4 2-3S 20A AIO FC V1 default factory setting is 48KHz and it doesn’t recommend upgrading the 96KHz, or it might cause an error in the motor idle setting, not spinning when disarmed.
DO NOT flash the firmware with a shorter interval, otherwise, there will be a certain chance of stalling and burning the flight controller.
- ESC-Configurator: https://preview.esc-configurator.com/
- Download BLHeliSuite16714903
- Download the Bluejay ESC firmware. Please choose C_X_70.HEX
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 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.
Connecting External Devices
Please note that the board reserves two serial ports and a standard SBUS port, which is available for the external CRSF protocol receiver or GPS module, and SBUS protocol receiver. You can refer to the below picture.
Recommend Parts
Package
- 1 * F4 2-3S 20A AIO FC V1
- 4 * M2*10 Machine Screw
- 4 * M2*10 Nylon Screw
- 4 * M2 Nuts
- 4 * Shock Absorbing Ball
- 4 * JST1.25mm Angle Socket
- 4 * JST1.25mm Straight Socket
- 1 * SH1.0 4Pin Adapter Cable
- 1 * Type-C to SH1.0 Adapter
- 1 * XT30 Power Cord
- 1 * Filter Capacitor
- 1 * 30mm Double-head VTX connector wire
- 1 * 60mm Single-head VTX connector wire
1.Shipping Time and Rules
1.1 Estimated Shipping Time
Expedited Shipping: 3-7 working days
Standard Shipping (Registered Mail): 12-30 working days
Please note:
- There are estimated delivery time only, so BETAFPV can not guarantee an exact delivery time.
- The estimated delivery time may be longer if any battery is included in your order.
- If an item is out of stock, typically it takes 1-2 or more weeks to ship.
- Incorrect information that objects to the below 1.5 Address Information Requirement may result in unsuccessful delivery and delays in receiving your package.
1.2 Track Package
After the order is shipped, you will receive a notification email containing the tracking number (you need to register BETAFPV website when placing the order).
Or log in to your BETAFPV account and look at your order history which will show if it was shipped and provide a tracking link, if available, given your selected shipping methods. If your order status shows shipped but you do not see tracking that means your order is packaged and will be shipped shortly. If your status is processing it means that we have received your order and will be shipping as soon as possible.
You can also enter the tracking number to check your package shipment status below. Please contact BETAFPV customer support for help if you are not able to track it.
1.3 Batteries Shipping
Some countries or remote regions are forbidden to ship stand-alone batteries due to restricted Customs rules.
We will notify you if we are unable to ship batteries to your location. For expedited shipping like DHL, stand-alone batteries are prohibited to be shipped. Devices packed with less than or equal to two batteries like drones are available to be shipped. Devices in which Batteries contained like transmitters or goggles are accepted to be shipped without limits.
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.
1.4 List of Countries or Region That Prohibit From Importing Drones or Batteries
Choosing standard shipping will be restricted.
Asia: India, Indonesia, Malaysia, Vietnam, Philippines, Pakistan, Oman
Africa: South Africa
Region (Prohibit batteries): Hawaii, Puerto Rico, APO/FPO
Note: It will be available for drones shipment if you would like to choose expedited shipping like DHL.
1.5 Address Information Requirement
For orders from below countries or regions below, address information has specially required. Please carefully read the following information. Incorrect information may result in unsuccessful delivery and delays in receiving your package.
Special Regions: Orders with military or government addresses in Russia and Ukraine cannot be shipped. We reserve right to cancel the order and provide a full refund.
Ukraine: Due to logistical restrictions, we are currently unable to ship any drones including any FPV Kits to Ukraine while batteries, frames, and other accessories can still be shipped.
If you wish to purchase drones or kits, we apologize for the inconvenience and recommend either waiting for updates on shipping or removing the drones or kits in your order, or you could also considering purchasing from our authorized agent in Ukraine (https://rc-store.com.ua)
United States: We are unable to ship to Armed Forces Europe (APO/FPO/DPO) addresses in the United States. Please provide an alternative address for delivery.
Germany: Please ensure that the street address and house number information is provided in full. Omissions are not allowed.
Japan: Please provide the full street address and house number information. Abbreviations with only numbers are not permitted.
Australia: Please provide the correct postal code that matches the city, and ensure that the city name is written correctly without any omissions or abbreviations. Search postcodes for all suburbs and locations around Australia here. (https://auspost.com.au/postcode)
Hong Kong or Macao: Please fill address and name in Chinese (traditional).
Taiwan: Please fill address and name in Chinese (traditional), and provide personal ID number due to Customs requirement.
South Korea: Please provide personal clearance code. You can apply for it from the below link if you do not have one. https://unipass.customs.go.kr/csp/index.do
Brazil: Please provide your tax number (CPF) in your address.
Chile: Please provide your individual tax number in your address.
India: Please provide your Adhaar Card/Pan Card/KYC number in your address. Provide tax number if you place order as company.
Mexico: Please provide your TAX ID (RFC) / Personal ID (CURP) in your address.
PO Boxes/APO/FPO Addresses: Shipments to PO Boxes, APO, FPO may be declined.
1.6 BETAFPV Assume No Responsibility For Delayed Or Rejected Orders Due To The Following Reasons
- Shipping time might be delayed for 3-7 days for transportation to remote regions. It might be 7 days longer if ships to islands area like Hawaii, Puerto Rico, Canary Islands etc.
- Delay or delivery failure because of the consignee’s actions. These actions include, but are not limited to: changing the address after shipment, entering an unknown address or wrong address, entering incorrect contact information, and refusing to receive, etc.
- Delay due to force majeure. “Force majeure” means an 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.
- Mail and packages cannot be delivered to the consignee’s address during weekends, national holidays, and festivals.
- The consignee 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 you enter the wrong address, please contact BETAFPV customer support in a timely manner.
2.Shipping Method and Fee
2.1 Standard Shipping
We offer free standard shipping on orders of $99.99 or more. If your order does not qualify for free shipping, the shipping fee will be charged $5 on orders of $20 - $99.98; charged $10 on orders of less than $20. (Shipping fee will be different when delivering to remote countries/regions.)
Products with big volume are excluded from free shipping rule due to dimensional weight calculated by shipping company.
The product collections list is as follows:
- FPV Goggles
- BETAFPV Gates & Flags
- RTF FPV Whoop Kits
- LiteRadio Series radio transmitter
- Radio Transmitter & Drone Storage Cases
Important: Starting April 24, all U.S. orders will include a flat $10 fee to offset recent increases in shipping costs and tariffs. And starting May 1, customers will be responsible for 100% of applicable tariffs. To learn more details, check U.S. Tariff Policy Change: What You Need to Know.
2.2 Expedited Shipping
We offer expedited shipping service worldwide including islands area. The shipping fee will be shown on the check-out page once the expedited shipping method is chosen.
Note: Purchasers are responsible for customs duties, taxes, customs clearance and other costs incurred when choosing expedited shipping.
2.3 Additional Shipping Fee
There are certain situations where you may be required to pay extra shipping fees.
Expedited Shipping with Batteries: When choosing expedited shipping and placing an order that includes more than 2 batteries, which unfollows the 1.3 Batteries Shipping policy, an extra shipping fee will be applied to cover the separate shipping of the batteries.
Reshipping Costs: Packages returned due to incorrect customer-provided addresses or the customs clearance cannot be completed due to customer-related issues, need to be reshipped will be subject to an additional shipping charge.
3.FAQ
3.1 How long until my order ships?
All orders will be processed within 1-2 working days after your payment.
If we are experiencing a high volume of orders or some products on back order, shipments may be delayed by a few days.
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 available and remember to check the email for the notification.
3.2 After I place an order, how do I change my order before shipment?
The nation cannot be changed once an order has been placed. If you need to change these details, please cancel the order and purchase again. Please contact BETAFPV customer support in 24 hours after placing the order if you need to change order product information or address.
3.3 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 to help. 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.
3.4 Under what circumstances will BETAFPV cancel an order unilaterally?
Product(s) unavailable currently, BETAFPV tries to contact customers and does not get a reply in 7 days.
High-Risk Order(s) identified by Credit Card bank or Paypal. To ensure your card safety, we will cancel your order.
No Shipping Methods. If we are not able to ship to your location, Your order will be canceled.
*The right of final interpretation of the shipping policy resides with BETAFPV
*Policy information updated April 2025
