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Flight Controller H743-MINI V3
Brand: Matek
Product Code: H743-MINI V3
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Flight Controller H743-MINI V3
Description
1. Product Summary
1.1. Product Description
The Matek Systems H743-MINI V3 is a compact, high-performance flight controller designed for multirotors, FPV aircraft, and fixed-wing drones. It features the STM32H743VIT6 MCU running at 480 MHz, dual IMUs (ICM42688-P + ICM42605), and a precision DPS310 barometer. With a 20×20 mm mounting layout and CAN Bus support, the H743-MINI V3 offers powerful performance in a small footprint for advanced builds requiring fast sensor fusion and flexible power options.
1.2. Product Features
- MCU: STM32H743VIT6, 480 MHz ARM Cortex-M7, 1 MB RAM + 2 MB Flash.
- Dual IMU: ICM42688-P (SPI1) + ICM42605 (SPI4) for redundancy and improved stability.
- Barometer: Infineon DPS310 high-precision pressure sensor.
- Input Voltage: 6.3 V ~ 36 V (2S – 8S LiPo).
- Power Outputs: 5 V @ 1.5 A (max 2 A), 8 V @ 1.5 A (max 2 A).
- UART Ports: 5.5 (UART 1, 2, 4, 6, 7 + RX8).
- PWM Outputs: 11 channels for motors and servos.
- I²C Buses: 2 independent channels for peripherals.
- CAN Bus: 1 port (C-H / C-L) for GPS or DroneCAN devices.
- Firmware Support: ArduPilot (MATEKH743), INAV, and Betaflight.
- Compact Size: 36 × 28 × 6.5 mm; 20×20 mm mounting pattern.
- Lightweight Design: ≈ 7 g for tight airframe integration.
1.3. Applications
- Mini and Micro Multirotors: Compact racing or cinematic builds needing fast processing and low latency.
- FPV Wings and Fixed-Wing Aircraft: Powerful autopilot capabilities with small footprint.
- VTOL and Hybrid UAVs: Support for multiple sensors and CAN devices.
- Research and Robotics: Precise sensor readings and computing for autonomous projects.
2. Technical Specifications
Table 2-1. H743-MINI V3 System Specifications
| Manufacturer | Matek Systems |
| Model | H743-MINI V3 Flight Controller |
| Microcontroller | STM32H743VIT6, 480 MHz ARM Cortex-M7 |
| RAM / Flash | 1 MB RAM / 2 MB Flash |
| IMU 1 | ICM42688-P (SPI1) |
| IMU 2 | ICM42605 (SPI4) |
| Barometer | DPS310 pressure sensor |
| Input Voltage Range | 6.3 V ~ 36 V (2S – 8S LiPo) |
| 5 V BEC Output | 5 V @ 1.5 A ( max 2 A ) |
| 8 V BEC Output | 8 V @ 1.5 A ( max 2 A ) |
| UART Ports | 5.5 (UART 1, 2, 4, 6, 7 + RX8) |
| PWM Outputs | 11 channels |
| I²C Ports | 2 buses |
| CAN Bus | 1 (C-H / C-L pads) |
| Firmware Support | ArduPilot (MATEKH743), INAV, Betaflight |
| Dimensions | 36 × 28 × 6.5 mm |
| Mounting Pattern | 20 × 20 mm M2 holes |
| Weight | ≈ 7 g |
3. Electrical Characteristics
Table 3-1. Electrical Parameters
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage | 6.3 | 12 | 36 | V |
| 5 V BEC Output | 4.8 | 5.0 | 5.2 | V |
| 8 V BEC Output | 7.6 | 8.0 | 8.2 | V |
| Continuous Current | – | 1.5 | 2.0 | A |
| Operating Temperature | -20 | 25 | 80 | °C |
4. Integration & Usage Notes
- Use the correct firmware target:
MATEKH743for ArduPilot or corresponding INAV target. - Ensure clean power input; for VBAT < 10 V the 8 V BEC output may drop below nominal.
- Mount the controller on anti-vibration pads to protect the dual IMUs.
- Keep sensor and power wiring separate to reduce EMI noise on CAN and I²C buses.
- Use CAN Bus for GPS, digital air speed, and DroneCAN peripherals for best performance.
- For high-current servos or FPV systems, use external BEC if required.
5. Environmental Conditions
Table 5-1. Environmental Ratings
| Operating Temperature | -20 °C ~ +80 °C |
| Storage Temperature | -40 °C ~ +90 °C |
| Humidity | 5 % ~ 95 % (non-condensing) |
6. Precautions
- Verify correct polarity of power connections before power-up.
- Do not exceed 36 V (8S LiPo) input voltage limit.
- Check BEC voltage with a multimeter before connecting sensitive electronics.
- Avoid shorting CAN Bus lines (C-H/C-L) or UART pins when powered.
- Use firmware recommended for your frame type and double-check target mapping.
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