Specifications

MCU: STM32L431xC, 256KB Flash

CAN transceiver data rates up to 5 Mbit/s in the CAN FD fast phase

1x CAN, DroneCAN Protocol  (2x GH-4P connectors in parallel)

3x UARTs

UART1, spare

UART2, MSP default, DFU

UART3, GPS default

1x I2C

for peripheral Airspeed sensor

for peripheral Barometer

1x SPI

for peripheral RM3100

4x ADC

BATT_VOLT, PIN 5

BATT_CURR, PIN 6

BATT2_VOLT, PIN 15

BATT2_CURR, PIN 16

5x PWM outputs

1x GPIO with TIM16 for buzzer

ST debug, SWCLK & SWDIO

LED

Blue, Fast blinking,  Booting

Blue, Slow blinking, working

Red, 3.3V indicator

Input voltage range: 4.5~5.5V  @5V pad/pin

Power consumption: 40mA

Operating Temperatures: -20~80 °C

Physical

2x JST-GH-4P(SM04B-GHS-TB) for CAN

1x JST-GH-4P(SM04B-GHS-TB) for I2C

1x JST-GH-6P(SM06B-GHS-TB) for UART3+I2C

Board Size: 26mm*26mm*6mm.  3.7g

Firmware

ArduPilot AP_Periph  MatekL431-Periph, or MatekL431-Airspeed

Update via DroneCAN GUI Tool

1x CAN-L431 board

1x JST-GH-4P to JST-GH-4P 20cm silicon wire

1x JST-GH-6P to JST-GH-6P 20cm silicon wire