Description
MATEKSYS H743-SLIM-V4 FLIGHT CONTROLLER
What is new on the H743-slim-V4
- Increase the output current of BEC5V from 2A to 2.5A, and raise the filtered VBAT current from 1A to 2A.
- Add TVS protection on Input voltage
- Add protections on more MCU I/O.
- Replace DPS310 with DPS368(environmentally protected against water (IPx8), dust & humidity)
- Other functions, Pins/Pads layout are same as previous board version.
FC SPECIFICATIONS:
- MCU: STM32H743VIH6, 480MHz , 1MB RAM, 2MB Flash
- IMU: Dual ICM42688P
- Baro: DPS368
- OSD: AT7456E (SPI2)
- Blackbox: MicroSD card socket
- 7x Uarts (1,2,3,4,6,7,8) with built-in inversion.
- 13x PWM outputs(including “LED” pad)
- 2x I2C
- 1x CAN
- 6x ADC (VBAT, Current, RSSI, Analog AirSpeed, Vbat2, Cur2)
- 3x LEDs for FC STATUS (Blue, Red) and 3.3V indicator(Red)
- 1x SPI3 breakout
- USB Type-C(USB2.0)
- 1x JST-SH1.0_8pin connector (Vbat/G/Curr/Rx8/S1/S2/S3/S4)
- 1x JST-GH1.25_4pin connector (5V/CAN-H/CAN-L/G)
- Dual Camera Inputs switch
- 5V 0r Vbat(2A) filtered power ON/OFF switch
- DJI FPV OSD is supported by any spare UART
POWER:
- Vbat Input: 6~36V (2~8S LiPo) with TVS protection
- BEC: 5V 2.5A cont. (Max.3A)
- LDO 3.3V: Max.200mA
- VBat filtered output 2A for VTx and camera
- No Current Sensor built-in
- ADC Vbat2 pad supports Max. 69V (voltage divider: 1K:20K)
- Static power: 200mA@5V with Betaflight, 150mA@5V with ArduPilot
FC FIRMWARE:
- ArduPilot: MATEKH743
- BetaFlight: MATEKH743
- INAV: MATEKH743
PHYSICAL DIMENSIONS:
- Mounting: 30.5 x 30.5mm, Φ4mm with Grommets Φ3mm
- Dimensions: 36 x 36 x 5 mm
- Weight: 7g
PACKAGE CONTENTS:
- 1x H743-SLIM-V4
- 6x Silicon grommets M4 to M3
- 1x JST-SH1.0_8pin cable, 5cm
- 2x JST-SH1.0_8pin connectors
- 1x JST-GH-4P to JST-GH-4P cable for CAN port, 20cm
| PWM PWM1~PWM13 are Dshot and PWM capable. However, mixing Dshot and normal PWM operation for outputs is restricted into groups, ie. enabling Dshot for an output in a group requires that ALL outputs in that group be configured and used as Dshot, rather than PWM outputs. If servo and motor are mixed in same group, make sure this group run lowest PWM frequency according to the servo specification. ie. Servo supports Max. 50Hz, ESC must run at 50Hz in this group. | S1 | PB0 | 5 V tolerant I/O | PWM1 GPIO50 | TIM8_CH2N | Group1 |
| S2 | PB1 | 3.3 V tolerant I/O | PWM2 GPIO51 | TIM8_CH3N | ||
| S3 | PA0 | 5 V tolerant I/O | PWM3 GPIO52 | TIM5_CH1 | Group2 | |
| S4 | PA1 | 5 V tolerant I/O | PWM4 GPIO53 | TIM5_CH2 | ||
| S5 | PA2 | 5 V tolerant I/O | PWM5 GPIO54 | TIM5_CH3 | ||
| S6 | PA3 | 5 V tolerant I/O | PWM6 GPIO55 | TIM5_CH4 | ||
| S7 | PD12 | 5 V tolerant I/O | PWM7 GPIO56 | TIM4_CH1 | Gourp3 | |
| S8 | PD13 | 5 V tolerant I/O | PWM8 GPIO57 | TIM4_CH2 | ||
| S9 | PD14 | 5 V tolerant I/O | PWM9 GPIO58 | TIM4_CH3 | ||
| S10 | PD15 | 5 V tolerant I/O | PWM10 GPIO59 | TIM4_CH4 | ||
| S11 | PE5 | 5 V tolerant I/O | PWM11 GPIO60 | TIM15_CH1 | Group4 | |
| S12 | PE6 | 5 V tolerant I/O | PWM12 GPIO61 | TIM15_CH2 | ||
| LED | PA8 | 5 V tolerant I/O | PWM13 GPIO62 | TIM1_CH1 | Group5 | |
| SERVO13_FUNCTION 120, NTF_LED_TYPES neopixel | ||||||
| ADC | No pad 1K:10K divider builtin | PC0 | 0~36V | on board battery voltage | BATT_VOLT_PIN BATT_VOLT_MULT | 10 11.0 |
| No pad | PC1 | 0~3.3V | on board current sensor | BATT_CURR_PIN BATT_AMP_PERVLT | 11 40 | |
| Vbat2 Pad 1K:20K divider builtin | PA4 | 0~69V | Vbat2 ADC | BATT2_VOLT_PIN BATT2_VOLT_MULT | 18 21.0 | |
| Cur2 Pad | PA7 | 0~3.3V | Cur2 ADC | BATT2_CURR_PIN BATT2_AMP_PERVLT | 7 / | |
| RSSI Pad | PC5 | 0~3.3V | RSSI ADC Analog RSSI | RSSI_ANA_PIN RSSI_TYPE | 8 1 | |
| AirS Pad 10K:10K divider builtin | PC4 | 0~6.6V | AirS ADC Analog Airspeed | ARSPD_PIN ARSPD_TYPE | 4 2 | |
| I2C | I2C1CL1/DA1 | PB6/PB7 | 5 V tolerant I/O | Digital Airspeed I2C | ARSPD_BUS | 1 |
| MS4525 MS5525 DLVR-L10D | ARSPD_TYPE | 1 3 9 | ||||
| Compass | COMPASS_AUTODEC | 1 | ||||
| I2C2CL2/DA2 | PB10/PB11 | 5 V tolerant I/O | on board Baro DPS368 | |||
| CAN | CAN1 | PD0/PD1 | 5 V tolerant I/O | F103/F303 CAN Node | CAN_D1_PROTOCOL CAN_P1_DRIVER | 1 1 |
| CAN GPS | GPS_TYPE | 9 | ||||
| CAN Compass | COMPASS_TYPEMASK | 0 | ||||
| CAN Airspeed sensor | ARSPD_TYPE | 8 | ||||
| UART | USB | PA11/PA12 | 5 V tolerant I/O | USB | console | SERIAL0 |
| RX7 TX7 RTS7 CTS7 | PE7/8/9/10 | 3.3 V tolerant I/O | UART7 | telem1 | SERIAL1 | |
| TX1 RX1 | PA9/PA10 | 5 V tolerant I/O | USART1 | telem2 | SERIAL2 | |
| TX2 RX2 | PD5/PD6 | 5 V tolerant I/O | USART2 | GPS1 | SERIAL3 | |
| TX3 RX3 | PD8/PD9 | 5 V tolerant I/O | USART3 | GPS2 | SERIAL4 | |
| TX8 RX8 | PE1/PE0 | 5 V tolerant I/O | UART8 | USER | SERIAL5 | |
| TX4 RX4 | PB9/PB8 | 5 V tolerant I/O | UART4 | USER | SERIAL6 | |
| TX6 RX6 | PC6/PC7 | 5 V tolerant I/O | USART6 | RC input/Receiver | SERIAL7 | |
| RX6 | SBUS/IBUS/DSM | |||||
| RX6 | PPM | |||||
RC INPUT
The Rx6 pin, which by default is mapped to a timer input, can be used for all ArduPilot supported receiver protocols, except CRSF which requires a true UART connection. However, bi-directional protocols which include telemetry, such as SRXL2 and FPort, when connected in this manner, will only provide RC without telemetry.
To allow CRSF and embedded telemetry available in Fport, CRSF, and SRXL2 receivers, the Rx6 pin can also be configured to be used as true UART RX pin for use with bi-directional systems by setting the BRD_ALT_CONFIG to “1” so it becomes the SERIAL7 port’s RX input pin.
With this option, SERIAL7_PROTOCOL must be set to “23”, and:
- PPM is not supported.
- SBUS/DSM/SRXL connects to the Rx6 pin, but SBUS requires that the SERIAL7_OPTIONS be set to “3”.
- FPort requires connection to Tx6 and SERIAL7_OPTIONS be set to “7”. If Telemetry doesn’t work, try set SERIAL7_OPTIONS = 135.
- CRSF also requires a Tx6 connection, in addition to Rx6, and automatically provides telemetry. Set SERIAL7_OPTIONS to “0”.
- SRXL2 requires a connection to Tx6 and automatically provides telemetry. Set SERIAL7_OPTIONS to “4”.
Any UART can be used for RC system connections in ArduPilot also, and is compatible with all protocols except PPM. See Radio Control Systems for details.
ArduPilot Relay(PINIO)
- Camera-1 and Vsw On by default
- Make sure 2 cameras are set with identical video format, both PAL or both NTSC.
# GPIOs
- PD10 PINIO1 OUTPUT GPIO(81) //Vsw pad power switch
- PD11 PINIO2 OUTPUT GPIO(82) //Camera switch
# RCx_OPTION: RC input option
- 28 Relay1 On/Off
- 34 Relay2 On/Off
- 35 Relay3 On/Off
- 36 Relay4 On/Off
e.g.
- RELAY1_FUNCTION 1
- RELAY1_PIN 81 //Vsw GPIO
- RC7_OPTION 28 //Relay On/Off, Use CH7 of Transmitter to switch Vsw
- RELAY2_FUNCTION 1
- RELAY2_PIN 82 //Camera switch GPIO
- RC8_OPTION 34 //Relay2 On/Off, Use CH8 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.
| BetaFlight | |||||
| PWM | S1 | PB0 | 5 V tolerant I/O | TIM3_CH3 | Motor |
| S2 | PB1 | 3.3 V tolerant I/O | TIM3_CH4 | ||
| S3 | PA0 | 5 V tolerant I/O | TIM5_CH1 | ||
| S4 | PA1 | 5 V tolerant I/O | TIM5_CH2 | ||
| S5 | PA2 | 5 V tolerant I/O | TIM5_CH3 | ||
| S6 | PA3 | 5 V tolerant I/O | TIM5_CH4 | ||
| S7 | PD12 | 5 V tolerant I/O | TIM4_CH1 | ||
| S8 | PD13 | 5 V tolerant I/O | TIM4_CH2 | ||
| S9 | PD14 | 5 V tolerant I/O | TIM4_CH3 | ||
| S10 | PD15 | 5 V tolerant I/O | TIM4_CH4 NO DMA | ||
| S11 | PE5 | 5 V tolerant I/O | TIM15_CH1 | Servo | |
| S12 | PE6 | 5 V tolerant I/O | TIM15_CH2 | ||
| LED | PA8 | 5 V tolerant I/O | TIM1_CH1 | 2812LED | |
| RX4 | PB8 | 5 V tolerant I/O | TIM16_CH1 | ||
| TX4 | PB9 | 5 V tolerant I/O | TIM17_CH1 |
| ADC | Vbat ADC, No pad 1K:10K divider builtin | PC0 | 0~36V | on board battery voltage | scale 110 |
| Current ADC, No pad | PC1 | 0~3.3V | on board current sensor | scale external | |
| Vbt2 Pad 1K:20K divider builtin | PA4 | 0~69V | Vbat2 ADC | scale 210 | |
| Cur2 Pad | PA7 | 0~3.3V | Current2 ADC | scale external | |
| RSSI Pad | PC5 | 0~3.3V | RSSI ADC | Analog RSSI | |
| AirS Pad 10K:10K divider builtin | PC4 | 0~6.6V | AirS ADC | Analog Airspeed | |
| I2C | I2C1 CL1/DA1 | PB6/PB7 | 5 V tolerant I/O | Digital Airspeed I2C | MS4525 |
| Compass | |||||
| I2C2 CL2/DA2 | PB10/PB11 | 5 V tolerant I/O | on board Barometer | DPS368 | |
| UART | USB | PA11/PA12 | 5 V tolerant I/O | USB | |
| RX7 TX7 RTS7 CTS7 | PE7/8/9/10 | 3.3 V tolerant I/O | UART7 | USER | |
| TX1 RX1 | PA9/PA10 | 5 V tolerant I/O | USART1 | USER | |
| TX2 RX2 | PD5/PD6 | 5 V tolerant I/O | USART2 | USER | |
| TX3 RX3 | PD8/PD9 | 5 V tolerant I/O | USART3 | USER | |
| TX8 RX8 | PE1/PE0 | 5 V tolerant I/O | UART8 | USER | |
| TX4 RX4 | PB9/PB8 | 5 V tolerant I/O | UART4 | USER | |
| TX6 RX6 | PC6/PC7 | 5 V tolerant I/O | UART6_RX | PPM & Serial RX | |
| UART6_TX | FPORT |
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