#include "Wire.h"
#include "LiquidCrystal_I2C.h"
#include "DHT.h"
#define DHT_PIN 4
#define DHT_TYPE DHT22
#define BUZZER_PIN 7
#define LED_PIN 13
DHT dht(DHT_PIN, DHT_TYPE);
LiquidCrystal_I2C lcd(0x27, 16, 2);
void setup() {
Serial.begin(9600);
lcd.begin(16, 2);
lcd.backlight();
dht.begin();
pinMode(BUZZER_PIN, OUTPUT);
pinMode(LED_PIN, OUTPUT);
}
void loop() {
delay(2000);
float humidity = dht.readHumidity();
float temperature = dht.readTemperature();
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Suhu: ");
lcd.print(temperature);
lcd.print(" C");
lcd.setCursor(0, 1);
lcd.print("Kelembaban: ");
lcd.print(humidity);
lcd.print(" %");
Serial.print("Suhu: ");
Serial.print(temperature);
Serial.print(" C, Kelembaban: ");
Serial.print(humidity);
Serial.println(" %");
if (temperature > 20.0) {
tone(BUZZER_PIN, 1000);
digitalWrite(LED_PIN, HIGH);
} else {
noTone(BUZZER_PIN);
digitalWrite(LED_PIN, LOW);
}
}