// LCD1602 to Arduino Uno connection example

#include <LiquidCrystal.h>
#include "DHT.h" // temperature sensor libraries

#define DHTPIN 2     
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321

#define SPEAKER_PIN A2  // speaker pin

#define BLUE_LED A3
#define RED_LED A4

DHT dht(DHTPIN, DHTTYPE);


LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

void setup() {
  dht.begin(); // start reading temp
  lcd.begin(16, 2);
  // you can now interact with the LCD, e.g.:
 
  pinMode(SPEAKER_PIN, OUTPUT); // pin A2 is set as output

  pinMode(BLUE_LED, OUTPUT); // LED pin is output
  pinMode(RED_LED, OUTPUT);

}

void loop() {
  // ...
  float temperature = dht.readTemperature(); // read temp and store in Temperature
  
  lcd.print("Temperature : ");
  lcd.print( temperature);

  if(temperature >= 70){
    digitalWrite(SPEAKER_PIN, HIGH);
    digitalWrite(RED_LED, HIGH);
    digitalWrite(BLUE_LED, LOW);

  }
  else{
    digitalWrite(SPEAKER_PIN, LOW);
    digitalWrite(RED_LED, LOW);
    digitalWrite(BLUE_LED, HIGH);

  }
  
  delay(2000);

  digitalWrite(SPEAKER_PIN, LOW);
  lcd.clear();

}