• MicoAir H743 V2 flight controller and 4-in-1 ESC stack
  • MicoAir H743 V2 flight controller — angled top view with JST-GH ports and TF card slot
  • MicoAir743 V2 wiring diagram — 4-in-1 ESC, GPS, VTX, MTF-01, receivers, telemetry, DJI O3/O4 unit
  • MicoAir743 V2 interfaces diagram — UART mapping, STM32H743VIT6 MCU, BMI088/BMI270 IMUs, SPL06 baro
  • H743 V2 size drawing — 36 x 36 mm, 30.5 mm mounting, 10 g; flight stack 17.5 mm tall, 24 g
  • H743 V2 top and bottom side by side — STM32H743 MCU, USB-C and labeled ports
  • Two MicoAir H743 V2 boards showing both sides — USB-C, Bluetooth and connector layout
  • MicoAir H743 V2 flight stack — flight controller on a 4-in-1 ESC with rubber standoffs
  • MicoAir 4-in-1 AM32 ESC from the H743 V2 flight stack — motor pads 1–4, battery pads and current shunt
1 9

MicoAir

MicoAir H743 V2 Flight Controller supports Ardupilot/PX4/INAV/Betaflight

MicoAir H743 V2 Flight Controller supports Ardupilot/PX4/INAV/Betaflight

$49.99 USD
$49.99 USD
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Firmware
Type

Firmware compatibility: The hardware supports ArduPilot, PX4, INAV and Betaflight. Current purchase options ship with ArduPilot pre-installed.

📘 Documentation & Guides

Setting it up with an AI assistant? Read our AI setup guide first. It shows you how to point ChatGPT, Claude or Gemini at the official manual for this product, so the answers come from the real pinout and parameter names instead of guesses.

Specifications

  • MCU: STM32H743VIT6, 480MHz, 2MB Flash
  • IMU: BMI088+BMI270
  • Baro: SPL06
  • Compass: QMC5883L
  • OSD: AT7456E (analog OSD is not currently supported by PX4 firmware)
  • MicroSD Card Slot
  • 8x UART
  • 11x PWM
  • 1x I2C
  • 1x SWD
  • 2x ADC (VBAT, Current)
  • USB Type-C
  • DJI O3/O4 VTX connector
  • BEC 5V 3A output (for controller, receiver, GPS, optical flow or other devices)
  • BEC 12V 3A output (for video transmitter, camera)
  • Bluetooth Telemetry (connected to UART8 internally, baudrate 115200)
  • VBAT Input Range: 2-6S (6-27V)
UART Mapping (Ardupilot)
  • SERIAL0 -> USB
  • SERIAL1 -> UART1 (MAVLink2, DMA-enabled)
  • SERIAL2 -> UART2 (DisplayPort, DMA-enabled)
  • SERIAL3 -> UART3 (GPS, DMA-enabled)
  • SERIAL4 -> UART4 (MAVLink2, DMA-enabled)
  • SERIAL5 -> UART5 (DMA-enabled)
  • SERIAL6 -> UART6 (RCIN, DMA–enabled)
  • SERIAL7-> UART7 (ESC Telemetry, DMA-enabled)
  • SERIAL8 -> UART8 (DMA–enabled, connected to on board BlueTooth Telemetry)
UART Mapping (PX4)
  • ttyACM0->USB
  • ttyS0->TELEM1 -> UART1
  • ttyS1->GPS2 -> UART2
  • ttyS2->GPS1 -> UART3
  • ttyS3->TELEM2 -> UART4
  • ttyS4->TELEM3-> UART5
  • ttyS5->RC -> UART6
  • ttyS6->URT6 -> UART7
  • ttyS7->TELEM4/SERIAL4 -> UART8
RC Input (Ardupilot)

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 (Ardupilot)

The MicoAir743v2 supports onboard OSD using OSD_TYPE 1 (MAX7456 driver). Simultaneously, DisplayPort OSD is available on the HD VTX connector, See below.

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 12v so be careful not to connect this to a peripheral requiring 5v.

PWM Output

The MicoAir743v2 supports up to 11 PWM outputs.

Channels 1-8 support DShot and bi-directional DShot.

(currently PX4&INAV not support BDShot function)

PWM output share 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(for Ardupilot) are:
  • BATT_VOLT_PIN 10
  • BATT_CURR_PIN 11
  • BATT_VOLT_MULT 21.12
  • BATT_AMP_PERVLT 40.2

The current scale depends on the current sensor in the ESC you fit, so treat it as a starting point and calibrate against your charger's mAh reading.

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.

Physical

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

Stack ESC Specifications

  • 55A AM32 4-in-1: 2–6S, 55A × 4 continuous, AM32 firmware (AM32_F4A_4IN1_F421_2.19), 48 kHz, PWM / DShot300 / DShot600 with bi-directional DShot, current sensor 12.75 mV/A, 20 × 20 mm (Φ3) and 30.5 × 30.5 mm (Φ4) mounting, 14 g, for 3.5–10 inch props
  • 70A AM32 4-in-1: 2–6S, 70A × 4 continuous, AM32 firmware (AM32_F4A_4IN1_F421_2.19), 48 kHz, PWM / DShot300 / DShot600 with bi-directional DShot, current sensor 10.2 mV/A, 30.5 × 30.5 mm (Φ4) mounting, 14.5 g, for 5–12 inch props
  • Both ratings assume good airflow over the ESC; DShot300 is the recommended starting protocol.

Package List (Only FC）:

  • MicoAir H743 V2 Flight Controller * 1
  • 4G TF Card *1
  • Connecting Wiring *7
  • Rubber Mat * 4

Package List:

Flight Stack:

FC & 55A AM32 ESC:

  • MicoAir H743 V2 Flight Controller * 1
  • 4G TF Card *1
  • MicoAir 4 in 1 55A AM32 ESC * 1
  • 12AWG Wiring *2
  • ESC Signal Wiring *1
  • Connecting Wiring *7
  • Capacitance *1
  • XT60 Plug * 1
  • Rubber Mat * 8

FC& 70A AM32 ESC:

  • MicoAir H743 V2 Flight Controller * 1
  • 4G TF Card *1
  • MicoAir 4 in 1 70A AM32 ESC * 1
  • 12AWG Wiring *2
  • ESC Signal Wiring *1
  • Connecting Wiring *7
  • Capacitance *1
  • XT60 Plug * 1
  • Rubber Mat * 8
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