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

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)