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Flight Controller H743-SLIM V3
Brand: Matek
Product Code: H743-SLIM V3
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Flight Controller H743-SLIM V3
Description
1. Product Summary
1.1. Product Description
The Matek Systems H743-SLIM V3 is a high-performance flight controller featuring the STM32H743VIH6 MCU running at 480 MHz. Designed for professional multirotor, FPV, and fixed-wing applications, it combines dual IMU sensors (ICM42688-P & ICM42605) and a DPS310 barometer to deliver precise and stable flight data. With its slim 36×36 mm design and a 30.5×30.5 mm mounting pattern, the H743-SLIM V3 provides powerful performance and flexible integration for high-end drones and compact frames.
1.2. Product Features
- MCU: STM32H743VIH6, ARM Cortex-M7, 480 MHz core frequency.
- Dual IMU: ICM42688-P (IMU0) + ICM42605 (IMU1).
- Barometer: Infineon DPS310 for altitude and pressure sensing.
- Input Voltage: 6 V ~ 36 V (2S ~ 8S LiPo).
- BEC Output: 5 V @ 2 A continuous (max 3 A).
- UART Ports: 7 (UART1, 2, 3, 4, 6, 7, 8).
- I²C Buses: 2 independent buses.
- CAN Bus: 1 (C-H / C-L pads).
- PWM Outputs: 13 channels (total).
- ADC Inputs: 6 (VBAT, Current, RSSI, Airspeed, VBAT2, Cur2).
- High Voltage Pad (VBAT2): Supports up to 69 V for telemetry.
- Firmware Support: ArduPilot (MATEKH743), INAV, Betaflight.
- Form Factor: Slim 36 × 36 × 5 mm PCB with 30.5×30.5 mounting pattern.
- Weight: ~7 g with grommets installed.
1.3. Applications
- Professional FPV Drones: Racing and cinematic airframes requiring high processing power.
- Multirotors / CineLifters: Compact frames with CAN integration for digital sensors.
- Fixed-Wing Aircraft: Stable and responsive autopilot for INAV or ArduPilot platforms.
- Research / Development: Ideal for AI and autonomous drone projects requiring precise sensor fusion.
2. Technical Specifications
Table 2-1. H743-SLIM V3 System Specifications
| Manufacturer | Matek Systems |
| Model | H743-SLIM V3 Flight Controller |
| Microcontroller | STM32H743VIH6, 480 MHz ARM Cortex-M7 |
| RAM / Flash | 1 MB RAM / 2 MB Flash |
| IMU 1 | ICM42688-P (SPI1) |
| IMU 2 | ICM42605 (SPI4) |
| Barometer | DPS310 |
| UART Ports | 7 (UART1–8 except 5) |
| I²C Buses | 2 |
| CAN Bus | 1 (C-H / C-L) |
| PWM Outputs | 13 channels including LED pad |
| ADC Inputs | 6 (VBAT, Cur, RSSI, Airspeed, VBAT2, Cur2) |
| Input Voltage Range | 6 ~ 36 V (2S ~ 8S LiPo) |
| BEC Output (5 V) | 5 V @ 2 A continuous (max 3 A) |
| VBAT2 Input | Up to 69 V (telemetry only) |
| Firmware Support | ArduPilot (MATEKH743), INAV, Betaflight |
| Dimensions | 36 × 36 × 5 mm |
| Mounting Pattern | 30.5 × 30.5 mm (Ø4 mm / Ø3 mm grommets) |
| Weight | ≈ 7 g |
3. Electrical Characteristics
Table 3-1. Electrical Parameters
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage | 6 | 12 | 36 | V |
| 5 V BEC Output | 4.8 | 5.0 | 5.2 | V |
| Continuous Current | – | 2.0 | 3.0 | A |
| Operating Temperature | -20 | 25 | 80 | °C |
| VBAT2 Voltage Range | – | – | 69 | V |
4. Integration & Usage Notes
- Use the correct firmware target:
MATEKH743for ArduPilot or INAV targets. - Mount the board flat and vibration-isolated for accurate IMU data.
- Ensure clean power supply – avoid voltage spikes on the main VBAT input.
- VBAT2 pad supports up to 69 V but only for telemetry measurement (not power input).
- External current sensor is required for current measurement functions.
- Keep CAN and I²C buses away from high-current paths to reduce EMI.
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
- Do not exceed 8S (36 V) input voltage limit on the main VBAT line.
- Check BEC output voltages with a multimeter before connecting sensitive electronics.
- Always use a fuse or protected power distribution for safety.
- Avoid shorting CAN or UART pins when powered on.
- Install the controller in a dry and dust-free environment for long-term reliability.
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