How to use multiple Software Serial in Arduino nano?

Question

I'm working on a project that needs to use at least 2 serial communications (2 TXs and RXs) alternately and in different pins. I wonder if it is possible to program the Arduino Nano for this task. I conducted research on the internet and saw that the processor that hardware (ATmega328) has only one UART, and by default this Arduino has dedicated 1 pin TX and one RX, but also saw that it would be possible in the Arduino UNO, which has the same processor, work with 2 serial communications using the SoftwareSerial library, it would be possible that the Arduino Nano?

Sure... SoftwareSerial just uses common GPIOs, so you COULD even use all of your GPIOs for serial transmission/receive; this, however, becomes quite useless when trying to use lots of them, since the processor can't give attention to all of them concurrently.. But at least you can use a couple of them without worrying too much — frarugi87

Faizullah Khan Faizullah Khan · Accepted Answer · 2016-03-03T18:58:09

Yes you can use Software Serial library for multiple Serial communication.

As declared by https://www.arduino.cc/en/Main/ArduinoBoardNano using this method:

#include <SoftwareSerial.h>

SoftwareSerial mySerial(10, 11); // RX, TX
SoftwareSerial mySerial1(8, 9); // RX, TX

How to use multiple Software Serial in Arduino nano?

1 Answers