// Library OLED
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>
//Library DHT
#include <DHT.h>;
// Inisialisasi kaki Output
#define biru 13
#define kuning 12
#define merah 11
#define buzzer 10
// inisialisasi input DHT22
#define DHTPIN 7 // what pin we're connected to
#define DHTTYPE DHT22 // DHT 22 (AM2302)
DHT dht(DHTPIN, DHTTYPE);
Adafruit_SSD1306 display(128, 64, &Wire, -1);
float suhu;
//String keterangan [];
void setup() {
// put your setup code here, to run once:
//Memulai komunikasi dengan serial & DHT
// pin Mode Output
pinMode(13,OUTPUT);
pinMode(12,OUTPUT);
pinMode(11,OUTPUT);
pinMode(10,OUTPUT);
Serial.begin(9600);
dht.begin();
//inisialisasi OLED
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display.clearDisplay();
display.setTextColor(1);
display.setTextSize(1);
display.display();
}
void loop() {
// put your main code here, to run repeatedly:
delay(2000);
display.clearDisplay();
suhu = dht.readTemperature(); // pembaca suhu
if ( isnan(suhu)) {
Serial.println(F("Failed to read from DHT sensor!"));
return;
}
display.setCursor(20,0);
display.print("Suhu: ");
display.print(suhu);
display.print(" C");
// program logika soal
if (suhu > 35){
digitalWrite(biru,LOW);
digitalWrite(kuning,LOW);
digitalWrite(merah,HIGH);
digitalWrite(buzzer,HIGH);
display.setCursor(0, 20);
display.print("Suhu Terlalu Panas");
tone(buzzer, 2000, 500);
}
else if (suhu>29){
digitalWrite(biru,LOW);
digitalWrite(kuning,HIGH);
digitalWrite(merah,LOW);
digitalWrite(buzzer,LOW);
display.setCursor(20, 20);
display.print("Suhu Normal");
}
else{
digitalWrite(biru,HIGH);
digitalWrite(kuning,LOW);
digitalWrite(merah,LOW);
digitalWrite(buzzer,LOW);
display.setCursor(0, 20);
display.print("Suhu Terlalu Dingin");
display.setCursor(0, 40);
display.print("Sedingin sikapmu");
}
display.display();
}