D131+3V32AREF3A0/DAC04A15A26A37A4/SDA8A5/SCL9A610A711+5V12RST13GND14VIN15TX16RX17RST18GND19D220D3/PWM21D422D5/PWM23D6/PWM24D725D826D9/PWM27D10/PWM28D11/MOSI29D12/MISO30