#include <LiquidCrystal.h>
LiquidCrystal lcd(13, 12, 11, 10, 9,7);
float alert;
int led   = 2;
int buzer = 4;
int dt    = 200;
int Tone  = 262;
int ToneTime =10;
float converion =5.0/1023.0;
int potentiometer =A5;

void setup() {
  // put your setup code here, to run once:
pinMode(buzer, OUTPUT);
pinMode(led, OUTPUT);
pinMode(potentiometer, INPUT);
Serial.begin(115200);
lcd.begin(16, 2);
}

void loop() {
  // put your main code here, to run repeatedly:
 
alert = converion*analogRead(potentiometer);
Serial.println(alert); 
if(alert>4.5){
  digitalWrite(led, HIGH);
  tone(buzer, Tone, ToneTime);
  lcd.println("High Voltage");
  delay(dt);
   digitalWrite(led, LOW);
   lcd.clear();
}


}