#include <Wire.h>  
#include <Adafruit_GFX.h>  
#include <Adafruit_SSD1306.h>  
#include <Adafruit_NeoPixel.h>
#include "DHT.h"

#define DHTPIN 2     
#define DHTTYPE DHT22
#define led_merah 10
#define led_kuning 9
#define led_biru 8
#define pinBuzzer 5   

DHT dht(DHTPIN, DHTTYPE);

#define screen_width 128 
#define screen_height 64 
#define OLED_RESET 4 
Adafruit_SSD1306 display(screen_width, screen_height);  
 void setup () {
   
  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);  
  display.clearDisplay();  
  dht.begin();
  pinMode(pinBuzzer, OUTPUT);
 }
   
 void loop () { 
  delay(1000);
  float h = dht.readHumidity();
  float t = dht.readTemperature();
  float f = dht.readTemperature(true);
   if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println(F("Failed to read from DHT sensor!"));
    return;
  }


  float hif = dht.computeHeatIndex(f, h);
  float hic = dht.computeHeatIndex(t, h, false);

  if (t < 29){
  digitalWrite(led_biru, HIGH);
  digitalWrite(led_merah, LOW);
  digitalWrite(led_kuning, LOW);
  noTone(pinBuzzer);
   display.clearDisplay();
   display.setTextSize(1);  
   display.setTextColor(1);  
   display.setCursor(0, 0);  
   display.print(" TEMPERATURE SENSOR ");  
   display.setCursor(0, 25);  
   display.print(" TEMPERATURE : ");  
   display.setCursor(90, 25);  
   display.print((int)t); 
   display.print(" C");
   display.setCursor(0, 35);   
   display.print("SUHU RENDAH"); 
   display.display(); 
  } 
  else if (t >29 && t <=35){
  digitalWrite(led_biru, LOW);
  digitalWrite(led_merah, LOW);
  digitalWrite(led_kuning, HIGH);
  noTone(pinBuzzer);
   display.clearDisplay();
   display.setTextSize(1);  
   display.setTextColor(1);  
   display.setCursor(0, 0);  
   display.print(" TEMPERATURE SENSOR ");  
   display.setCursor(0, 25);  
   display.print(" TEMPERATURE : ");  
   display.setCursor(90, 25);  
   display.print((int)t); 
   display.print(" C");
   display.setCursor(0, 35);   
   display.print("SUHU CUKUP"); 
   display.display(); 
  } else{
  digitalWrite(led_biru, LOW);
  digitalWrite(led_merah, HIGH);
  digitalWrite(led_kuning, LOW);
  tone(pinBuzzer,1000);
   display.clearDisplay();
   display.setTextSize(1);  
   display.setTextColor(1);  
   display.setCursor(0, 0);  
   display.print(" TEMPERATURE SENSOR ");  
   display.setCursor(0, 25);  
   display.print(" TEMPERATURE : ");  
   display.setCursor(90, 25);  
   display.print((int)t); 
   display.print(" C");
   display.setCursor(0, 35);   
   display.print("SUHU PANAS"); 
   display.display(); 
  }
 }