The Matrix 1S 3IN1 HD Brushless Flight Controller is purpose-built for 1S HD whoops, featuring the iconic "cross" design. Engineered exclusively for digital FPV, it eliminates analog OSD, integrating a flight controller, ESC, and ELRS 2.4G RX into one lightweight, streamlined unit for effortless setup and maintenance. Equipped with newly developed BEC and ESC, it’s finely tuned to meet the demands of 1S HD whoops, delivering superior digital image transmission and setting a new standard in 1S HD flight controllers.

FEATURES

• Optimized for 1S Whoops: Designed to enhance performance with the DJI O4 digital transmission system.
• Three-in-One Integration: Combines flight controller, ESC, and ELRS 2.4G RX into a compact unit, focusing exclusively on high-quality digital FPV by eliminating analog OSD.
• Stable HD 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.
• Effortless Setup: Equipped with convenient motor plugs and a SH1.0-6Pin HD digital port for a solder-free, hassle-free installation and maintenance experience.

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.

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.

Specification:

MCU: STM32G473CEU6 (168MHz)

Gyro: ICM42688P

Blackbox memory: 16MB 

Sensor: Voltage & Current 

BEC: 5V/3A

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

ESC: 12A continuous

RX: Serial ELRS 2.4GHz (V3.4.3)

FC firmware: Betaflight_4.5.1_BETAFPVG473

USB port: SH1.0-4Pin

HD Digital VTX Port: SH1.0-6Pin

Motor plug: JST1.25-3Pin

Battery connector: BT2.0

Mounting size: 25.5mm x 25.5mm

Weight: 3.2±0.1g (battery connector excluded), 4.2±0.1g (battery connector included)

ESC

Power input: 1S Only

Current: 12A continuous, 18A peak

ESC firmware: A_X_5_96_v0.19.2.hex for BB51 Bluejay firmware

Digital signal protocol: DSHOT300, DSHOT600

Package Included:

1x Matrix 1S Brushless Flight Controller (3IN1 HD)

1x Type-C to SH1.0 Adapter

1x SH1.0-4Pin Adapter Cable

1x SH1.0-6Pin Adapter Cable

4x M1.2*4 Self-tapping Screws

4x M1.4*5 Self-tapping Screws

4x Shock Absorbing Balls