#include <SoftwareSerial.h> // import another program, a library, to communicate
#define rxpin 1 
#define txpin 0

SoftwareSerial serial(rxpin,txpin);

int rxPin = 1; // this is simular to the int = setting, however this is linked to the library
int txPin = 0;
int trig = 6; 
int echo = 5; 
long lecture_echo; 
long cm;
void setup() 
{ 
  pinMode(trig, OUTPUT); 
  digitalWrite(trig, LOW); 
  pinMode(echo, INPUT); 
  serial.begin(9600); 
}
void loop() 
{ 
  digitalWrite(trig, HIGH); 
  delayMicroseconds(10); 
  digitalWrite(trig, LOW); 
  lecture_echo = pulseIn(echo, HIGH); 
  cm = lecture_echo / 58; 
  
  serial.print ("Distance in cm: "); 
  serial.println(cm); 
  delay(1000); 
}