//YWROBOT
//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include <LiquidCrystal_I2C.h>
#define peso 0.004883
#define soglia_bassa 3.00
#define soglia_alta  4.50


LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 20 chars and 4 line display
int value;
int newvalue;
float voltage;

int ledrosso  = 13;


void setup()

{
pinMode(A0, INPUT);
Serial.begin(115200);

pinMode(ledrosso, OUTPUT);


//inizializza il display e scrivi le prime tre righe
  lcd.init();                      // initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();
  lcd.setCursor(3,0);
  lcd.print("CIAO, ATTILIO!");
  lcd.setCursor(5,1);
  lcd.print("01-06-2022!");
  lcd.setCursor(3,2);
  lcd.print("ITIS MALIGNANI");
  lcd.setCursor(4,3);
  lcd.print("Power By ATTI!");
  delay(2000);
  lcd.setCursor(4,3);
  lcd.print("              ");


  newvalue = 1024;
}


void loop(){
  
  int value = analogRead(A0);
  
  if(value != newvalue)
  {
    newvalue = value;
    lcd.setCursor(7,3);
    lcd.print("      " );
    lcd.setCursor(7,3);
    voltage = peso * newvalue;
    lcd.print(voltage );
    lcd.setCursor(12,3);
    lcd.print("V");
  }

  if(voltage < soglia_bassa)
  {
  digitalWrite(ledrosso, HIGH);
  }
  else
  {
  digitalWrite(ledrosso, LOW);
  }
 delay(100);
 }