ardupilot/libraries/AP_HAL_ChibiOS/hwdef/MicoAir743v2

MicoAir743v2 Flight Controller

The MicoAir743v2 is a flight controller designed and produced by MicoAir Tech.

Features

• STM32H743 microcontroller
• BMI088/BMI270 dual IMUs
• Integrated BlueTooth module for telemetry
• SPL06 barometer
• QMC5883L magnetometer
• AT7456E OSD
• 9V 3A BEC; 5V 3A BEC
• MicroSD Card Slot
• 8 UARTs
• 11 PWM outputs
• 1 I2C
• 1 SWD

Physical

UART Mapping

• SERIAL0 -> USB
• SERIAL1 -> UART1 (MAVLink2, DMA-enabled)
• SERIAL2 -> UART2 (DisplayPort, DMA-enabled)
• SERIAL3 -> UART3 (GPS, DMA-enabled)
• SERIAL4 -> UART4 (MAVLink2, DMA-enabled)
• SERIAL5 -> UART5 (User, DMA-enabled)
• SERIAL6 -> UART6 (RCIN, DMA-enabled)
• SERIAL7 -> UART7 (RX only, ESC Telemetry, DMA-enabled)
• SERIAL8 -> UART8 (MAVLink2, connected to on board BlueTooth module)

RC Input

The UART6 is compatible with all ArduPilot supported receiver protocols,

• PPM is not supported.

  • SBUS/DSM/SRXL connects to the RX6 pin.

  • FPort requires connection to TX6 . See FPort Receivers.

  • CRSF also requires a TX6 connection, in addition to RX6, and automatically provides telemetry.

  • SRXL2 requires a connection to TX6 and automatically provides telemetry. Set SERIAL6_OPTIONS to “4”.

Any UART can also be used for RC system connections in ArduPilot and is compatible with all protocols except PPM. See Radio Control Systems for details.

OSD Support

The MicoAir743v2 supports onboard OSD using OSD_TYPE 1 (MAX7456 driver). Simultaneously, DisplayPort OSD is available on the HD VTX connector, set OSD_TYPE2 = "5".

VTX Support

The SH1.0-6P connector supports a DJI Air Unit / HD VTX connection. Protocol defaults to DisplayPort. Pin 1 of the connector is 9v so be careful not to connect this to a peripheral requiring 5v.

PWM Output

The MicoAir743v2 supports up to 11 PWM outputs.

All the channels support DShot.

Channels 1-8 support bi-directional DShot.

PWM outputs are grouped and every group must use the same output protocol:

1, 2, 3, 4 are Group 1;

5, 6 are Group 2;

7, 8, 11 are Group 3;

9, 10 are Group 4; Note: PWM11 is the "LED" pin. If this is configured for serial LED use then PWM 7 and 8 can only be used as serial LED also.

Battery Monitoring

The board has a internal voltage sensor and connections on the ESC connector for an external current sensor input. The voltage sensor can handle up to 6S LiPo batteries.

The default battery parameters are:

• BATT_MONITOR 4
• BATT_VOLT_PIN 10
• BATT_CURR_PIN 11
• BATT_VOLT_MULT 21.12
• BATT_CURR_SCALE 40.2

Compass

The MicoAir743v2 has a built-in compass sensor (QMC5883L), and you can also attach an external compass using I2C on the SDA and SCL connector.

BlueTooth

The MicoAir743v2 has an on board BlueTooth module connected to UART8(SERIAL8). The BlueTooth id is MicoAir743v2-xxxxxx and you can connect to it without pairing id.

Mechanical

• Mounting: 30.5 x 30.5mm, Φ4mm
• Dimensions: 36 x 36 x 8 mm
• Weight: 10g

Ports Connector

Loading Firmware

Initial firmware load can be done with DFU by plugging in USB with the bootloader button pressed. Then you should load the "XXXX_with_bl.hex" firmware, using your favorite DFU loading tool.

Once the initial firmware is loaded you can update the firmware using any ArduPilot ground station software. Updates should be done with the "*.apj" firmware files.