MATEKSYS Flight Controller H7A3-WING

The MATEKSYS H7A3-WING Flight Controller features an STM32H7A3RIT6 280MHz processor, ICM42688P gyro, SPL06-001 barometer, onboard OSD, 6 UARTs, I2C, CAN, 11 PWM outputs, as well as 5V and 9V BECs for advanced fixed-wing performance.

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

Including

• 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)

TIPS:

• set LOG_BACKEND_TYPE = 1 (File) for SD card logging.

• set BATT_MONITOR = 21 , BATT_SHUNT = 0.00025, BATT_MAX_AMPS = 164 for using the built-in I2C digital power monitor.