// LCD1602 to Arduino Uno connection example

#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 10, 9, 8, 7);
int i=0;
int a=10;
const int buzzer = 6; //buzzer to arduino pin 6
int value = A0;
int c1 = 500;


void setup() {

  lcd.begin(16, 2); //setam numarul de coloane si de linii a displayului 
  
  pinMode(buzzer, OUTPUT); // Set buzzer - pin 6 as an output
  
  Serial.begin(9600);

}

void loop() {

//Program potentiometru 

int c2 = analogRead(value);


// Print out the value you read:
  Serial.println(c2);
  delay(1);  // delay in between reads for stability


//Lcd program 

lcd.begin(16, 2);//setam numarul de coloane si de linii a displayului 

for(i=0;i<=16;i++){
 lcd.setCursor( i , 1);
 lcd.print("z");
};

for(i=16;i>=0;i--){
  lcd.setCursor( i , 0 );
  lcd.print(" ");
  delay(a);
  lcd.print("Hello");
  delay(a);
  lcd.print(" ");
  delay(a);
}

//Buzzer program 
if (c2>c1){
tone(buzzer, 1000); // Send 1KHz sound signal...
  delay(5);        // ...for 1 sec
  noTone(buzzer);     // Stop sound...
  delay(5);        // ...for 1sec
}
else {digitalWrite(buzzer, LOW);}

}