Mateksys F405-Wing

../_images/matekf405-wing.png

the above image and some content courtesy of mateksys.com

Note

Support for this board is available with Copter-3.6.0 (and higher)

Note

Due to flash memory limitations, this board does not include all ArduPilot features. See Firmware Limitations for details.

Specifications

  • Processor
    • STM32F405RGT6 ARM (168MHz)
  • Sensors
    • InvenSense MPU6000 IMU (accel, gyro)
    • BMP280 barometer
    • Voltage & current sensor
  • Power
    • 9V ~ 30V DC input power
  • Interfaces
    • 6x UARTS
    • 10x PWM outputs
    • 1x RC input PWM/PPM, SBUS
    • I2C port for external compass and airspeed sensor
    • USB port
    • Built-in OSD
  • Size and Dimensions
    • 56mm x 36mm x 15mm
    • 25g

See mateksys.com for more detailed specifications and wiring diagrams.

Default UART order

  • SERIAL0 = console = USB
  • SERIAL1 = Telemetry1 = USART1
  • SERIAL2 = empty
  • SERIAL3 = GPS1 = USART3
  • SERIAL4 = GPS2 = UART4
  • SERIAL5 = USER = UART5
  • SERIAL6 = USER = USART6
  • SERIAL7 = USER = USART2 (only if BRD_ALT_CONFIG =1)

Serial protocols can be adjusted to personal preferences.

Dshot capability

All motor/servo outputs 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. The output groups that must be the same (PWM rate or Dshot, when configured as a normal servo/motor output) are: 1/2, 3/4, 5/6, 7/8/9 , and 10.

Outputs

The first 8 servo/motor outputs are marked on the board: M1,M2,S3-S8 . S9 is a solder pad on the board, and S10 is connected to the pin marked LED in ArduPilot’s definition. Using S10 allows the easy grouping for odd numbers of motors with a common DShot or PWM frequency without sacrificing the use of an output for servo use due to rate issues (see above Dshot discussion).

RC Input

The SBUS pin can be used for all ArduPilot supported receiver protocols. However, there is an alternate board configuration selectable by setting the BRD_ALT_CONFIG to “1”. In this case, the UART2 RX input (marked RX2 on the board) is used for the receiver input and is mapped to SERIAL7. This is to provide support for FPort in firmware 4.1 and later, since it requires a true UART.

Note

In the alternate configuration, SBUS would need an external inverter before connection directly to RX2, but it can be still attached to the SBUS pin on the board since that is connected to an on-board inverter which is then connected to RX2. (and FPort will require an external bidirectional inverter circuit, like SPort requires, See FPort section.

Battery Monitor Configuration

These settings are set as defaults when the firmware is loaded. However, if they are ever lost, you can manually set the parameters:

Enable Battery monitor.

BATT_MONITOR =4

Then reboot.

BATT_VOLT_PIN 10

BATT_CURR_PIN 11

BATT_VOLT_MULT 11.0

BATT_AMP_PERVLT 31.7

Where to Buy

Connecting a GPS/Compass module

This board does not include a GPS or compass so an external GPS/compass should be connected as shown below in order for autonomous modes to function.

../_images/matekf405-wing-with-gps.png

A battery must be plugged in for power to be provided to the 5V pins supplying the GPS/compass modules.