H7A3-WING Flight Controller for Fixed-Wing & VTOL

Meet the big brain for your wings: the H7A3-WING flight controller. Built around an STM32H7 processor, it’s made for INAV and Ardupilot pilots who push their fixed-wing or VTOL builds harder than their thumbs allow. Keywords: H7A3-WING flight controller, INAV fixed wing FC, Ardupilot VTOL FC.

Why You Want It

Because your flying wing deserves more than recycled quad gear. With the H7 chip, onboard OSD, barometer, and tons of UARTs, the H7A3-WING brings precision and processing power. Translation: smoother flights, more sensors, and fewer “why did it roll over?” moments. (Pilot error not excluded.)

Specifications

• MCU: STM32H7A3RIT6, 280MHz Cortex-M7, 1.4MB RAM, 2MB Flash
• IMU: ICM42688P
• Baro: SPL06-001
• OSD: AT7456E
• Blackbox: MicroSD socket
• I2C digital power monitor

• 6x Uarts (1,2,3,4, 5, 6) with built-in inversion.
• 11x PWM outputs
• 1x I2C
• 1x CAN
• 4x ADC (VBAT, Current, VB2, Cur2)
• 3x LEDs for FC STATUS (Blue, Red) and 3.3V indicator(Red)
• USB/Beep Extender with Type-C(USB2.0)
• 2x JST-GH1.25_4pin connector for CAN and I2C

• 9V/12V output ON/OFF switchable

• Digital video OSD is supported by any spare UART

Regulators

• Vbat Input: 9~30V (3~6S LiPo)
• BEC 5V/4v5: 2.5A cont. /3A peak
• BEC 9V/12V: 2A cont. /3A peak
• BEC Vx: 8A cont. /12A Peak,  output 5V Default, 6V or 7.2V option.
• LDO 3.3V: Max.200mA

I2C digital power monitor

• No calibration required.
• Current sensing resistor: 0.00025 ohm
• Load current on current sensing resistor:  100A(Continuous),  164A(Burst)
• Voltage accuracy: ± 0.1%
• Current accuracy: ± 2%
• INA2xx I2C address:  0x45 (69)

• Parameters
  • BATT_MONITOR  ->21 (INA2xx)
  • BATT_SHUNT   -> 0.00025
  • BATT_MAX_AMPS  -> 164
  • BATT_I2C_BUS   -> 0 default
  • BATT_I2C_ADDR -> 0 default (or 69)

FC Firmware

• ArduPilot: MATEKH7A3 (4.6 or newer)
• ArduPlane  https://firmware.ardupilot.org/Plane/beta/MatekH7A3/
• ArduCopter  https://firmware.ardupilot.org/Copter/beta/MatekH7A3/
• Flashing with STM32CubeProgrammer

Physical

• Mounting: 30.5 x 30.5mm, Φ4mm with Grommets Φ3mm
• Dimensions: 54 x 36 x 13 mm
• Weight: 30g with USB extender

What’s in the Box*

• 1x H7A3-WING
• 1x USB(Type-C)/Beep (Passive buzzer) Extender with 6pin cable
• 1x 20cm JST-SH-6P to JST-SH-6P cable for USB extender.
• 2x 20cm JST-GH-4P to JST-GH-4P cable for CAN & I2C port
• 1x Rubycon ZLH 35V 470uF capacitor
• Dupont 2.54 pins  (Board is shipped unsoldered)
• 
  

Still Here?

Alright, telemetry junkie. The H7A3-WING flight controller gives you an STM32H7A3 chip, barometer, OSD, and enough PWM outputs to run a small flying circus. Long-tail keyword: H7A3-WING flight controller for INAV and Ardupilot fixed-wing VTOL builds. If you’re still scrolling, your plane’s already jealous.