#include <SoftwareSerial.h> // Add SoftwareSerial library

SoftwareSerial mySerial(8, 9); // Create new SoftwareSerial object named mySerial

void setup() {
  mySerial.begin(115200); // Start the serial port
}

void loop() {
  mySerial.println("Hello!"); // Write message to serial port
  delay(1000);
}