SOFTUART

#include <SoftwareSerial.h>
SoftwareSerial mySerial(10, 11); // RX, TX
void setup()
{
  mySerial.begin(9600);
  mySerial.println(“Hello, world?”);
}
void loop()
{
  if (mySerial.available())
    mySerial.write(mySerial.read());
}