FC Specifications
MCU: 168MHz STM32F405
IMU: MPU6000 accelerometer/gyro (SPI)
Baro: BMP280 (I2C)
OSD: INAV OSD w/ AT7456E chip
Blackbox: MicroSD card slot (SD/SDHC)
VCP & 6x UARTs
2x Motors, 7x Servos outputs
2x I2C
3x LEDs for FC STATUS (Blue, Red) and 3.3V indicator(Red)
Built in inverter for SBUS input (UART2-RX)
PPM/UART Shared: UART2-RX
SoftSerial on TX2 pad
Battery Voltage Sensor: 1:10 (Scale 1100)
WS2812 Led Strip : Yes
Beeper : Yes
RSSI: Yes

FC Firmware
INAV Flight
Target: MATEKF405SE

PDB
Input voltage range: 9~30V (3~6S LiPo) w/TVS protection
2x ESC power pads
Current Senor: 104A,  3.3V ADC,  Scale 317

BEC 5V output
Designed for Flight controller, Receiver, OSD, Camera, Buzzer, 2812 LED_Strip, Buzzer, GPS module, AirSpeed
Continuous current: 2 Amps, Max.3A

BEC 9V /12V output
Designed for Video Transmitter, Camera, Gimbal ect.
Continuous current: 2 Amps, Max.3A
12V option with Jumper pad

BEC Vx output
Designed for Servos
Voltage adjustable, 5V Default, 6V or 7.2V via jumper
Continuous current: 5 Amps, Max.6A
Output Ripple: 50mV (VIn=24V, VOut=5V@5A load)

BEC 3.3V output
Designed for Baro / Compass module and Spektrum RX
Linear Regulator
Continuous current: 500mA

Physical
Mounting: 30.5 x 30.5mm, Φ4mm with Grommets Φ3mm
Dimensions: 56 x 36 x 13 mm
Weight: 25g


Wiring Guide&Mixer

I2C1 [DA1 CL1] supports Baro( BMP280 /MS5611 /BMP085) and OLED(0.96″)
I2C2 [DA2 CL2] supports compass (HMC5883 /MAG3110 /QMC5883 /IST8310) & Pitot_MS4525

CLI command for Motors of Custom Mixer
mmix 0 1.0 0.0 0.0 0.0 # motor1
mmix 1 1.0 0.0 0.0 0.0 # motor2
save

Mapping

ArduPilot WIKI
http://ardupilot.org/copter/docs/common-loading-firmware-onto-chibios-only-boards.html
http://ardupilot.org/copter/docs/common-matekf405-wing.html#connecting-a-gps-compass-module

Acknowledgements

Threads related
RCG  Most Integrated Ardupilot Flight Controller (ChiBios)
RCG  Matek F405-WING Flight Controller // iNav & ArduPlane