#include <LiquidCrystal_I2C.h>
#include <DHT.h>

#define ledblue 13
#define ledred 12 
#define ledgreen 11
#define buzzer 4
#define DHTPIN 5
#define DHTTYPE DHT22




LiquidCrystal_I2C lcd(0x27,20,4);
DHT dht(DHTPIN, DHTTYPE);
void setup() {
  pinMode(ledred, OUTPUT);
  pinMode(ledblue, OUTPUT);
  pinMode(ledgreen, OUTPUT);
  pinMode(buzzer, OUTPUT);
  Serial.begin(9600);
  lcd.init();
  lcd.backlight();
  digitalWrite(ledred, HIGH);
  digitalWrite(ledblue, HIGH);
  digitalWrite(ledgreen, HIGH);
  tone(4,300,500);
  digitalWrite(ledred, LOW);
  digitalWrite(ledblue, LOW);
  digitalWrite(ledgreen, LOW);
  digitalWrite(buzzer, LOW);
  lcd.clear();

  dht.begin();

}

void loop() {
  
  delay(500);

  float h = dht.readHumidity();
  // celcius reading
  float t = dht.readTemperature();
  
  
  if(h > 70 && t > 30){
    digitalWrite(ledred, HIGH);
    digitalWrite(ledblue, LOW);
    digitalWrite(ledgreen, LOW);
    lcd.clear();

    lcd.setCursor(0,0);
    lcd.print("WANHAFIZ ZAIM");
    lcd.setCursor(0,1);
    lcd.print("Temp: ");
    lcd.setCursor(15,1);
    lcd.print("C");
    lcd.setCursor(6,1);
    lcd.print(t);
    lcd.setCursor(0,2);
    lcd.print("Humidity: ");
    lcd.setCursor(15,2);
    lcd.print("%");
    lcd.setCursor(9,2);
    lcd.print(h);
    lcd.setCursor(0,3);
    lcd.print("HIGH");
    tone(4,800,1000);
    delay(1000);
    lcd.clear();
    delay(100);
  }


  else if(h < 30 && t < 20){
    digitalWrite(ledred, LOW);
    digitalWrite(ledblue, HIGH);
    digitalWrite(ledgreen, LOW);
    lcd.clear();

    lcd.setCursor(0,0);
    lcd.print("WANHAFIZ ZAIM");
    lcd.setCursor(0,1);
    lcd.print("Temp: ");
    lcd.setCursor(15,1);
    lcd.print("C");
    lcd.setCursor(6,1);
    lcd.print(t);
    lcd.setCursor(0,2);
    lcd.print("Humidity: ");
    lcd.setCursor(15,2);
    lcd.print("%");
    lcd.setCursor(9,2);
    lcd.print(h);
    lcd.setCursor(0,3);
    lcd.print("LOW");
    tone(4,800,1000);
    delay(1000);
    lcd.clear();
    delay(100);
    
  }

  else {
    digitalWrite(ledred, LOW);
    digitalWrite(ledblue, LOW);
    digitalWrite(ledgreen, HIGH);
    lcd.clear();

    lcd.setCursor(0,0);
    lcd.print("WANHAFIZ ZAIM");
    lcd.setCursor(0,1);
    lcd.print("Temp: ");
    lcd.setCursor(15,1);
    lcd.print("C");
    lcd.setCursor(6,1);
    lcd.print(t);
    lcd.setCursor(0,2);
    lcd.print("Humidity: ");
    lcd.setCursor(15,2);
    lcd.print("%");
    lcd.setCursor(9,2);
    lcd.print(h);
    lcd.setCursor(0,3);
    lcd.print("AVERAGE");
    delay(1000);
    lcd.clear();
    delay(100);
    
  }
}