turn Serial receiver into CAN receiver.

Specifications
MCU: STM32L431xC, 256KB Flash
1x CAN, DroneCAN Protocol
1x UART(UART3, Tx3/ Rx3)
ST debug, SWCLK & SWDIO

LED
Blue, Fast blinking, Booting
Blue, Slow blinking, working

Input voltage range: 4.5~5.5V @5V pad/pin
Power consumption: 10mA
Operating Temperatures: -40~85 °C

Physical
1x JST-GH-4P(SM04B-GHS-TB) for CAN
2.54mm pitch holes for UART3
Board Size: 23mm*12.5mm. 2.5g
3D file : CAN-L4-RC_STEP.zip

Firmware
ArduPilot AP_Periph MatekL431-RC
Update via DroneCAN GUI Tool

Packing
1x CAN-L4-RC board
1x JST-GH-4P to JST-GH-4P 20cm silicon wire