#include "DHT.h"
DHT dht (11, DHT22);

int ledMerah = 13;
int ledHijau = 12;
int sensorDHT = 11;
int trigPin = 10;
int echoPin = 9;
int buzzer = 8;

int ldr = A5;
int nilai;
int distance;
int duration;

void setup() {
  pinMode(13, OUTPUT);
  pinMode(12, OUTPUT);

  pinMode(trigPin, OUTPUT);
  pinMode(echoPin, INPUT);

  pinMode(buzzer, OUTPUT);

  dht.begin();
  Serial.begin(9600);
}

void loop() {
  nilai =analogRead(ldr);

  float suhu = dht.readTemperature();
  
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);

  duration = pulseIn(echoPin, HIGH);
  distance = duration * 0.034/2;

  
  Serial.print("Nilai LDR : ");
  Serial.println(nilai);

  if (nilai < 500) {
    digitalWrite(ledMerah, HIGH);
    digitalWrite(ledHijau, HIGH);
  } else {
    digitalWrite(ledMerah, LOW);
    digitalWrite(ledHijau, LOW);
  }

  Serial.print("Suhu : ");
  Serial.println(suhu);
  if (suhu > 40) {
    digitalWrite(ledMerah, HIGH);
    digitalWrite(ledHijau, HIGH);
    delay(300);
    digitalWrite(ledMerah, LOW);
    digitalWrite(ledHijau, LOW);
    delay(300);
  }

  Serial.print("Distance : ");
  Serial.println(distance);

  if (distance < 50) {
    tone(buzzer,300);
    delay(1000);
    noTone(buzzer);
  }
}