#include <LiquidCrystal.h>
LiquidCrystal lcd(19,23,18,17,16,15);
 
int Trig_pin =33;
int Echo_pin =32;
long duration;
float Speed_of_sound =0.034;
float dist_in_cm;

void setup() {
  // put your setup code here, to run once:
  lcd.begin(16,2);
  lcd.println("NIHAD");;
  Serial.begin(115200);
  pinMode(Trig_pin, OUTPUT);
  pinMode(Echo_pin,INPUT);
  Serial.begin(115200);
}

void loop() {
  lcd.setCursor(1,0);
  //String f=millis().ToString();
  lcd.print(millis()/1000);
  delay(300); // this speeds up the simulation
  // put your setup code here, to  run once:
  Serial.begin(115200);
#define buzzer 14
  pinMode (buzzer, OUTPUT);
  // put your ;ain code here, to run repeatedly:
  tone(buzzer, 500,1000);
  delay(1000); // this speeds up the simulation
  tone(buzzer, 100,1000);
  delay(1000); //speedsup the simulation
  digitalWrite(Trig_pin, LOW);
  delayMicroseconds(2);
  digitalWrite(Trig_pin, HIGH);
  delayMicroseconds(10);
  digitalWrite(Trig_pin,LOW);

  duration =pulseIn(Echo_pin,HIGH);

  dist_in_cm=duration*Speed_of_sound/2;
  Serial.print("distance in cm :");
  Serial.println(dist_in_cm);

  delay(1000); 
}