20x20mm Matek Systems H743-MINI Betaflight Flight Controller 2-8S MPU6000 5/8V BEC 2MB Flash for RC Drone FPV Racing

FC Specifications

• Brand name: Matek Systems
• Item name: H743-MINI
• MCU: STM32H743VIT6, 480MHz , 1MB RAM, 2MB Flash
• IMU: MPU6000 (SPI1) & ICM20602 (SPI4)
• Baro: Infineon DPS310 (I2C2)
• OSD: AT7456E (SPI2)
• Blackbox: MicroSD card socket (SDIO)

• 5.5x Uarts (1,2,4,6,7, Rx8)
• 11x PWM outputs(S1~S10, LED)
• 2x I2C (I2C1/DA1 CL1 pads, no I2C2 break0ut)
• 1x CAN (C-H, C-L pads)
• 5x ADC (VBAT, Current, RSSI, VB2, CU2)
• 3x LEDs for FC STATUS (Blue, Red) and 3.3V indicator(Red)
• 1x JST-SH1.0_8pin connector (Vbat/G/Curr/Rx8/S1/S2/S3/S4)

• Dual Camera Inputs switch
• 8V power ON/OFF switch

Power

• Vbat Input: 6.3~36V (2~8S LiPo)
• BEC: 5V 1.5A cont. (Max.2A)
• BEC: 8V 1.5A cont. (Max.2A),   8V outputs stable when Vbat>=10V,  8V outputs 80% of Vbat when Vbat< 10V
• LDO 3.3V: 200mA
• VB2 pad supports Max. 69V (voltage divider 1K:20K)
• Static power: 200mA@5V with Betaflight,  150mA@5V with ArduPilot

FC Firmware

• ArduPilot(ChiBiOS): MATEKH743
• BetaFlight: MATEKH743
• INAV: MATEKH743 (To be supported soon)

Physical

• Mounting
  • 20 x 20mm/Φ3mm with Silicon Grommets
  • 20 x 20mm/Φ2mm with Silicon & Brass Grommets
• Dimensions:  36 x 28 x 6.5mm
• Weight: 7g

Package Including

• 1x H743-MINI
• 6x Silicon grommets M4 to M3
• 6x Brass grommets M3 to M2
• 1x JST-SH1.0_8pin cable, 5cm
• 2x JST-SH1.0_8pin connectors

QA

1. Ardupilot Relay(PINIO)

• Camera-1 and 8V On by default
• Make sure 2 cameras are set with identical video format, both PAL or both NTSC.

# GPIOs

• PD10 PINIO1 OUTPUT GPIO(81)   //8V power ON/OFF switch
• PD11 PINIO2 OUTPUT GPIO(82)   //Camera switch

# RCx_OPTION: RC input option

• 28   Relay On/Off
• 34   Relay2 On/Off
• 35   Relay3 On/Off
• 36   Relay4 On/Off

e.g.

• RELAY_PIN       81    //8V switch GPIO
• RC7_OPTION   28    //Relay On/Off, Use CH7 of Transmitter to switch Vsw
• RELAY_PIN2     82    //Camera switch GPIO
• RC8_OPTION   34    //Relay2 On/Off, Use CH8 of Transmitter to switch camera

or

• RELAY_PIN3       81    //8V switch GPIO
• RC9_OPTION     35    //Relay3 On/Off, Use CH9 of Transmitter to switch Vsw
• RELAY_PIN4       82    //Camera switch GPIO
• RC10_OPTION   36    //Relay4 On/Off, Use CH10 of Transmitter to switch camera

The configured feature will be triggered when the auxiliary switch’s pwm value becomes higher than 1800. It will be deactivated when the value falls below 1200.

Check the pwm value sent from the transmitter when the switch is high and low using the Mission Planner’s Initial Setup >> Mandatory Hardware >> Radio Calibration screen. If it does not climb higher than 1800 or lower than 1200, it is best to adjust the servo end points in the transmitter.

2. Tips

• ArduPilot Firmware
  • https://firmware.ardupilot.org/Plane/stable/MatekH743/
  • https://firmware.ardupilot.org/Copter/stable/MatekH743/
• INAV is expected to support H743 in 2.6.
• H743-MINI has betaflight firmware preloaded for QC
• BetaFlight target is not on the Github, pls download BetaFlight firmware from our website.
• If you flash ArduPilot firmware via BetaFlight configurator.  there is a known issue that flash process will freeze at 50% if “full chip erase” is selected.   Disable full chip erase when flashing,  then reset to default in Mission Planner after flashing.
• It is highly recommended to use STM32CubeProgrammer to erase MCU and upload firmware http://www.mateksys.com/?p=6905