Matrix 1S 4IN1 FC front view
Matrix 1S 4IN1 FC front view
Matrix 1S 4IN1 FC front view
Matrix 1S 4IN1 FC front view

BETAFPV Matrix 1S Brushless Flight Controller (3IN1/4IN1)

About BETAFPV Matrix 1S Brushless Flight Controller:

The Matrix 1S Brushless Flight Controller redefines 1S whoop performance with two purpose-driven architectures: the 3IN1 for DJI O4 digital dominance (integrating FC, ESC, and ELRS 2.4G RX while omitting analog OSD), and the 4IN1 for analog mastery (adding built-in OSD + solder pads for external VTXs). Both feature the iconic cross-design architecture, newly developed BEC, 18A peak ESCs, and the STM32G473 MCU for 55% faster processing—delivering effortless setup, pro-tier control, and uncompromised flight dynamics that rewrite 1S standards.

BETAFPV
5.0
Sales：31Pcs
$39.99
$54.99
-27%

● High Current Output: Delivers over 3A of current to support digital image transmission.

● Low Voltage Capability: Operates at ultra-low voltages down to 2.85V.

● Enhanced Safety: Provides a better chance of safe recovery when flying at low voltages.

● Advanced BEC Design: Optimized to handle the demands of 1S whoops and digital systems.

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Betafpv Matrix 1s Brushless Flight Controller 3in1 Front
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Matrix 1S FC 4IN1 3IN1 Dual DNA One Legend

Attention

● Crafted for newcomers and recreational pilots, the Matrix FC features a robust 1mm board for enhanced durability, a solder-free design for easy installation, and a beginner-friendly experience. For advanced pilots, the ultra-thin and lightweight Air FC is the definitive choice, engineered with race-winning agility to push the boundaries of FPV flight performance.


● Flight controllers are covered for manufacturer defects. Issues arising from user errors, physical crash damage, damage during installation or dismantling, modifications, power surges, electrical fires, or water exposure are not covered.

Bullet Points

● Dual DNA: 3IN1 (FC, ESC, and ELRS 2.4G RX) for DJI O4 digital dominance (omits analog OSD), 4IN1 for analog mastery with OSD.

●  STM32G473 MCU: 55% faster processing than F411 for responsive tuning.

● Stable Video Transmission: Features a newly developed BEC to ensure consistent power delivery for seamless HD performance.

● Enhanced Overcurrent Capacity: Supports 12A continuous current and 18A peak ESC, providing robust performance for demanding flights.

● Reliable Precision: Includes an independent 3.3V LDO design to deliver stable, interference-free power directly to the IMU for accurate control.

● Whoop-ready Installation: The 3IN1 is equipped with motor plugs and a SH1.0-6Pin HD digital port for a hassle-free installation and maintenance experience, while the 4IN1 has external VTX soldering pads for protocol flexibility.

Specifications

Flight Controller (FC)

MCU: STM32G473CEU6 (168MHz)

Gyro: ICM42688P

Blackbox Memory: 16MB

Sensors: Voltage & Current

BEC: 5V / 3A

UART (3IN1 Version): UART 1 (RX Only/SBUS), UART 2 (Free), UART 3 (For RX), UART 4 (Free/HD MSP)

UART (4IN1 Version): UART 1 (For VTX), UART 2 (Free), UART 3 (For RX), UART 4 (NONE)

ESC: 12A continuous

Receiver: Serial ELRS 2.4GHz (V3.4.3)

FC Firmware: Betaflight 4.5.1 (3IN1 version), Betaflight 4.5.2 (4IN1 version)

USB Port: SH1.0-4Pin

OSD: AT7456E (4IN1 version only)

HD Digital VTX Port: SH1.0-6Pin (3IN1 version only)

Motor Plug: JST1.25-3Pin

Battery Connector: BT2.0

Mounting Size: 25.5mm x 25.5mm

Weight (3IN1 Version): 3.8±0.1g (excl. battery connector), 4.2±0.1g (incl. battery connector)

Weight (4IN1 Version): 3.6±0.1g (excl. battery connector), 4.6±0.1g (incl. battery connector)


ESC

Power Input: 1S only

Current: 12A continuous, 18A peak

ESC Firmware: A_X_5_96_v0.19.2.hex (BB51 Bluejay)

Digital Signal Protocol: DSHOT300, DSHOT600

SpecificationMatrix 1S 3IN1Matrix 1S 4IN1F4 1S 5A AIO
MCUSTM32G473CEU6STM32G473CEU6STM32F411CEU6
MCU frequency168MHz168MHz108MHz
Gyro, max. sampling rateICM42688P, 8KHzICM42688P, 8KHzBMI270, 3.2KHz
ESC12A continuous12A continuous1S, 5A
Blackbox memory16M16M8M
OSD-Betaflight OSD: AT7456E-
RXOnboard Serial ELRS 2.4GHz-
Motor plugJST1.25-
Weight3.8g3.6g3.64g
Matrix 1S FC 4IN1 3IN1 STM32G473 MCU

Diagram

Matrix 1S Brushless Flight Controller (3IN1):

Matrix 1S 3IN1 HD FC top front
Matrix 1S 3IN1 HD FC bottom front

Matrix 1S Brushless Flight Controller (4IN1):

Matrix 1S 4IN1 FC top front
Matrix 1S 4IN1 FC bottom front

New BEC for Stable HD Image Transmission

Digital image transmission requires higher current, and 1S whoops often fly at voltages as low as 3.3V, placing significant demands on the BEC. To meet these challenges, an advanced BEC has been developed, capable of delivering over 3A of current at ultra-low voltages down to 2.85V. This ensures stable digital image transmission even in critical situations. While flying to such low voltages isn't recommended, this innovation provides pilots with a greater chance of safely recovering from unexpected situations.

Betafpv Matrix 1s Brushless Flight Controller 3A & 4.8V

Enhanced Continuous 12A ESC

HD image transmission adds weight to 1S whoops, demanding stronger power and higher ESC overcurrent capacity. Our engineers exceeded expectations, delivering a robust ESC with 12A continuous output and 18A peak capacity on the iconic "cross" flight controller. This ensures optimal thrust-to-weight ratio, reliable performance, and worry-free high-definition flights.

Individual Power Supply for IMU

HD image transmission adds weight to 1S whoops, demanding stronger power and higher ESC overcurrent capacity. Our engineers exceeded expectations, delivering a robust ESC with 12A continuous output and 18A peak capacity on the iconic "cross" flight controller. This ensures optimal thrust-to-weight ratio, reliable performance, and worry-free high-definition flights.

Effortless Setup and Maintenance

The Matrix 1S 3IN1 HD FC is designed to maximize your flight time by minimizing setup hassle. Equipped with convenient motor plugs and a SH1.0-6Pin HD digital port, it allows for a completely solder-free installation and maintenance process. Now, you can focus more on enjoying high-definition flight experiences instead of dealing with complex tools.

Betafpv Matrix 1s Brushless Flight Controller Digital Port

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, connect to ExpressLRS Configurator instead of 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 4.5.1.

● FC firmware: Betaflight_4.5.1_BETAFPVG473, download the firmware and CLI dump file

● Reference link: https://github.com/betaflight/betaflight/releases/tag/4.5.1

Bluejay ESC Firmware

With BB51 ESC solution, Matrix 1S 3IN1 HD Brushless Flight Controller is based on A_X_5_96_v0.19.2.hex for BB51 Bluejay firmware, it supports DSHOT300, DSHOT600, 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.


ESC-Configurator: https://preview.esc-configurator.com/

Download BLHeliSuite16714903

Download the Bluejay ESC firmware, please choose A_X_5_96_v0.19.2.hex.

How to Use Serial Ports, Intergrated RX and VTX

UART3 is connected to the built-in serial ELRS RX. To release UART3, please remove the resistor. Additionally, this FC reserves 2 complete full-featured serial ports that can be used for external serial receivers, GPS, HD VTX, or other serial devices. You can refer to the picture below.

Betafpv Matrix 1s Brushless Flight Controller Detail
Betafpv Matrix 1s Brushless Flight Controller ELRS
Betafpv Matrix 1s Brushless Flight Controller DJIo4

Recommendations

Package Included

1 x Matrix 1S Brushless Flight Controller

1 x Type-C to SH1.0 Adapter 

1 x SH1.0-4Pin Adapter Cable 

1 x SH1.0-6Pin Adapter Cable 

4 x M1.2*4 Self-tapping Screws 

4 x M1.4*5 Self-tapping Screws 

4 x Shock Absorbing Balls

Betafpv Matrix 1s Brushless Flight Controller Package
Reviews (2)
  • s******l
    The delivery arrived in 3 weeks, completely undamaged and in good condition. I am 100% satisfied with the quality of the products, although I have not tested all of them yet, but at first glance they all seem very good. Thank you for the excellent service!
    Style：3 In 1
  • J***********l
    The 3-in-1 design makes installation super easy, and it performs flawlessly. The gyro is very stable, and the overall build quality is excellent. Highly recommended!
    Style：3 In 1
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