#include <LiquidCrystal_I2C.h>

int pot = 0;
int ldr;
int pir;
LiquidCrystal_I2C lcd(0x27, 20, 4);  

void setup() {
  lcd.init();       
  lcd.backlight();  
  lcd.setCursor(1, 1);
  lcd.print("Programa Sensor");
  delay(2000);
  lcd.clear();
  Serial.begin(9600);
  pinMode(9, OUTPUT);
  pinMode(10, OUTPUT);
  pinMode(2, INPUT);
}

void loop() {
  pot = analogRead(A0);
  float voltage = pot * 0.00488758;

  Serial.print("Tensão: ");
  Serial.print(voltage);
  Serial.println("V");

  lcd.setCursor(0, 1);
  lcd.print("Tensao: ");
  lcd.print(voltage);
  lcd.print("V");

  digitalWrite(9, HIGH);
  digitalWrite(10, LOW);
  delay(2000);
  digitalWrite(9, LOW);
  digitalWrite(10, HIGH);
  delay(2000);

  ldr = analogRead(A1);
  Serial.print("Valor da Luminosidade: ");
  Serial.println(ldr);

  lcd.setCursor(0, 0);
  if (ldr <= 300) {
    lcd.print("Bom dia       "); 
  } else {
    lcd.print("Boa noite     "); 
  }
  delay(1000);

  pir = digitalRead(2);
  Serial.print("Sensor PIR:");
  Serial.println(pir);

  
}