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

#define DHTPIN 2
#define DHTTYPE DHT22

DHT dht(DHTPIN, DHTTYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
const int led1=3;
const int led2=4;
const int led3=5;

void setup() {
 dht.begin();
 lcd.init();
 lcd.backlight();
 pinMode(led1, OUTPUT);
 pinMode(led2, OUTPUT);
 pinMode(led3, OUTPUT);
}

void loop() {
 float suhu = dht.readTemperature();

 if (isnan(suhu)) {
    Serial.println("eror");
    return;
 }

 lcd.setCursor(0, 0);
 lcd.print("Suhu: ");
 lcd.print(suhu);
 lcd.print(" C");
  
  
 if (suhu>35){
  digitalWrite(led1, HIGH);
 }else{
  digitalWrite(led1, LOW);
 }

if (suhu>=30 && suhu <=35){
  digitalWrite(led2, HIGH);
}else {
  digitalWrite(led2, LOW);
}
if (suhu<30){
  digitalWrite(led3, HIGH);
}else {
  digitalWrite(led3, LOW);
}
}