#define D0 16

#define D1 5 // I2C Bus SCL (clock)

#define D2 4 // I2C Bus SDA (data)

#define D3 0

#define D4 2 // Same as "LED_BUILTIN", but inverted logic

#define D5 14 // SPI Bus SCK (clock)

#define D6 12 // SPI Bus MISO 

#define D7 13 // SPI Bus MOSI

#define D8 15 // SPI Bus SS (CS)

#define D9 3 // RX0 (Serial console)

#define D10 1 // TX0 (Serial console)