Flight Controller H7A3-SLIM

1.1. Product Description

The Matek Systems H7A3-SLIM is a high-performance flight controller designed for advanced multirotor, fixed-wing, and VTOL aircraft. It is powered by a STM32H7A3RIT6 processor running at 280 MHz with a dual-precision floating point unit, offering superior processing capacity for real-time stabilization, autopilot, and navigation tasks. The controller integrates the ICM42688-P IMU and SPL06 barometer, delivering precise motion sensing and altitude control. With an input voltage range up to 8S LiPo, multiple BEC outputs, CAN bus, and 11 PWM channels, it is optimized for professional and long-range UAV builds.

1.2. Product Features

• MCU: STM32H7A3RIT6, ARM Cortex-M7 @ 280 MHz, 1.4 MB RAM, 2 MB Flash.
• IMU: ICM42688-P 6-axis gyro/accelerometer.
• Barometer: SPL06-001 digital pressure sensor.
• OSD: Integrated AT7456E On-Screen Display chip.
• BlackBox Memory: 128 MB NAND flash (1 G-bit).
• UART Ports: 6 total (with built-in signal inversion).
• PWM Outputs: 11 channels, configurable for servos, motors, or auxiliary devices.
• I²C Bus: 1 × I²C port for GPS, compass, or airspeed sensors.
• CAN Port: 1 × DroneCAN bus for peripherals.
• ADC Inputs: VBAT, Current, VB2, Cur2.
• Input Voltage: 6 V ~ 36 V (2S ~ 8S LiPo).
• BEC Outputs:
  • 5 V @ 2 A cont / 3 A max
  • 9 V @ 2 A cont / 3 A max
• Mounting Pattern: 30.5 × 30.5 mm (Ø4 mm holes, Ø3 mm grommets).
• Dimensions: ~36 × 36 × 5 mm.
• Weight: ≈ 7 g.
• Firmware Support: ArduPilot target “MATEKH7A3”.

1.3. Applications

• Professional UAV Systems: Long-range, mapping, or industrial missions.
• FPV Drones: Racing and cinematic setups requiring high-speed computation.
• VTOL / Fixed-Wing: Aircraft with multiple servos and hybrid propulsion.
• Research and Development: Robotics, UAV prototyping, and control systems.