Each of the 14 digital pins on the Arduino Uno can be used as an input or output ... In addition, some pins have specialized functions: Serial: pins 0 (RX) and 1 (TX). Used to receive (RX) and ...

Despite the differences in size and microcontroller, the Arduino Nano and Micro share some similar pinout configurations ... and their serial RX/TX pins are on pins D0 and D1, respectively.

For years, there has been a clear distinction between the Arduino and Raspberry Pi boards ... you can access one UART (pins D0 and D1 as RX and TX), one SPI (pins D10 to D13 as SS, MOSI, MISO ...