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Matek H743-Slim V4 Flight Controller - 30x30mm

About MATEK H743-slim-V4 Flight Controller:

The Matek H743-Slim V4 is a premium flight controller engineered for absolute precision and reliability. Designed to handle demanding freestyle lines and ultra-smooth long-range flights, this versatile board supports a wide 2–8S LiPo input voltage range and seamlessly adapts to your preferred ecosystem with full Betaflight, iNav, and ArduPilot compatibility.

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Top highlights
  • Equipped with an STM32H743VIH6 MCU running at 480MHz to handle complex long-range or freestyle processing with ease.
  • Fully compatible with ArduPilot, Betaflight, and INAV, offering maximum layout versatility for any type of build.
  • Features 7x hardware UARTs with built-in inversion, 13x PWM outputs, and a dedicated CAN bus port for external sensors.
  • Built-in dual camera input switcher allows you to swap video feeds mid-flight using a transmitter switch.
  • Supports a wide 6V to 36V input range with filtered VBAT and a powerful onboard BEC for reliable component power.
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What is new on the H743-slim-V4？

● Increase the output current of BEC5V from 2A to 2.5A, and raise the filtered VBAT current from 1A to 2A.

● Add TVS protection on Input voltage.

● Add protections on more MCU I/O.

Replace DPS310 with DPS368(environmentally protected against water (IPx8), dust & humidity)

● Other functions, Pins/Pads layout are same as previous board version.

h743 slim v4 layout
h743 slim v4 wiring
h743 slim v4 can

Buying Guide: Matek H743-Slim V4 Flight Controller

MEPSKING Expert Review

From the MEPSKING expert integration perspective, the H743-Slim V4 feels more like a compact autopilot platform than a basic racing flight controller. The 480MHz H7 processor provides comfortable headroom for RPM filtering, GPS rescue, telemetry, logging and multiple connected peripherals. Seven UARTs, CAN bus and dual I2C buses also reduce the port compromises commonly encountered on F4 and simpler F7 boards.

The dual ICM42688P IMUs, DPS368 barometer and MicroSD logging make the board particularly attractive for INAV and ArduPilot long-range builds. Our main reservation is complexity: the dense layout and extensive configuration options are better suited to experienced builders. For a simple four-motor Betaflight quad without GPS, CAN devices or advanced logging, a cheaper F7 controller may provide better value.

Is the H743-Slim V4 Right for Your Build?

Build TypeRecommendationWhy
INAV Long RangeHighly RecommendedGPS, barometer, logging and multiple UART support
ArduPilot MultirotorHighly RecommendedCAN, 13 PWM outputs and MicroSD data storage
Advanced Betaflight BuildRecommendedH7 processing, dual cameras and extensive peripheral support
Basic 5-Inch QuadUsually OverkillMany ports and advanced functions may remain unused

Installation and Troubleshooting Notes

Install the board with the supplied silicone grommets on a 30.5×30.5mm stack and confirm the “This Side Up” orientation before configuring board alignment. Flash the MATEKH743 target for Betaflight, INAV or ArduPilot. The controller does not contain an onboard current sensor, so current telemetry must come from a compatible ESC, analog power module or DroneCAN monitor.

Before connecting the main battery, check polarity and continuity and perform the first power-up through a  TBS Smoke Stopper.  If USB is not detected, try a confirmed data cable, another port and DFU mode before replacing the board. Missing sensors usually indicate the wrong firmware target, while unstable flight should first be checked for incorrect orientation, hard mounting or excessive vibration.

For analog video, verify camera input, video output, VTX power and OSD settings. For a digital system, assign MSP DisplayPort to a spare UART. ArduPilot users mixing motors and servos should also check PWM timer groups because outputs within the same group may need to run a common protocol or frequency.

Final Purchase Recommendation

Buy the Matek H743-Slim V4 if you need a mature 30×30 H7 controller for an INAV long-range aircraft, ArduPilot multirotor or advanced FPV build with several peripherals. It is less compelling for a basic budget quad. Matek currently classifies the model as end-of-life, so it is best purchased for an immediate build rather than as the foundation of a future fleet requiring long-term spare availability.

Specifications

● MCU: STM32H743VIH6, 480MHz , 1MB RAM, 2MB Flash

● IMU: Dual ICM42688P

● Baro: DPS368

● OSD: AT7456E (SPI2)

● Blackbox: MicroSD card socket

● 7x Uarts (1,2,3,4,6,7,8) with built-in inversion.

● 13x PWM outputs(including “LED” pad)

● 2x I2C

● 1x CAN

● 6x ADC (VBAT, Current, RSSI, Analog AirSpeed, Vbat2, Cur2)

● 3x LEDs for FC STATUS (Blue, Red) and 3.3V indicator(Red)

● 1x SPI3 breakout

● USB Type-C(USB2.0)

● 1x JST-SH1.0_8pin connector (Vbat/G/Curr/Rx8/S1/S2/S3/S4)

● 1x JST-GH1.25_4pin connector (5V/CAN-H/CAN-L/G)

● Dual Camera Inputs switch

● 5V 0r Vbat(2A) filtered power ON/OFF switch

● DJI FPV OSD is supported by any spare UART

Power

● Vbat Input: 6~36V (2~8S LiPo) with TVS protection

● BEC: 5V 2.5A cont. (Max.3A)

● LDO 3.3V: Max.200mA

● VBat filtered output 2A for VTx and camera

● No Current Sensor built-in

● ADC Vbat2 pad supports Max. 69V (voltage divider: 1K:20K)

● Static power: 200mA@5V with Betaflight,  150mA@5V with ArduPilot

FC Firmware

● ArduPilot: MATEKH743

● BetaFlight: MATEKH743

● INAV: MATEKH743

Physical

● Mounting: 30.5 x 30.5mm, Φ4mm with Grommets Φ3mm

● Dimensions: 36 x 36 x 5 mm

● Weight: 7g

Recommended Parts:

Includes

●1x H743-SLIM-V4

● 6x Silicon grommets M4 to M3

● 1x JST-SH1.0_8pin cable, 5cm

● 2x JST-SH1.0_8pin connectors

● 1x JST-GH-4P to JST-GH-4P cable for CAN port, 20cm

Recommendation：

FAQ Feel free to ask us any questions

Any questions about products, free to ask.