#include <DHT.h>
#include <Adafruit_SSD1306.h>
#include <Adafruit_GFX.h>
#include <Fonts/FreeSerif9pt7b.h>
#define dht_pin 2
#define led_merah 11
#define led_hijau 12
#define led_biru 13
#define buzzer 7
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define DHTTYPE DHT22
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);
DHT dht(dht_pin, DHTTYPE);
void setup() {
Serial.begin(115200);
dht.begin();
display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
display.clearDisplay();
pinMode(buzzer, OUTPUT);
pinMode(led_merah, OUTPUT);
pinMode(led_hijau, OUTPUT);
pinMode(led_biru, OUTPUT);
}
void loop() {
delay(2000);
display.setFont(&FreeSerif9pt7b);
display.clearDisplay();
display.setTextSize(1);
display.setTextColor(WHITE);
display.setCursor(0, 40);
float h = dht.readHumidity();
float suhu = dht.readTemperature();
float f = dht.readTemperature(true);
if(isnan (h) || isnan (suhu) || isnan (f)) {
return;
}
float hif = dht.computeHeatIndex(f,h);
float hic = dht.computeHeatIndex(suhu,h, false);
if (suhu <24) {
digitalWrite(led_merah, LOW);
digitalWrite(led_hijau, LOW);
digitalWrite(led_biru, HIGH);
display.println("SUHU RENDAH");
display.display();
//Tone(buzzer, 0);
}
else if (suhu > 24 && suhu < 38){
digitalWrite(led_merah, LOW);
digitalWrite(led_hijau, HIGH);
digitalWrite(led_biru, LOW);
display.println("SUHU CUKUP");
display.display();
//Tone(buzzer, 0);
}
else if (suhu >38){
digitalWrite(led_merah, HIGH);
digitalWrite(led_hijau, LOW);
digitalWrite(led_biru, LOW);
display.println("SUHU PANAS");
display.display();
tone(buzzer, 1000);
delay(100);
tone(buzzer, 500);
delay(100);
}
else {
digitalWrite(led_merah, LOW);
digitalWrite(led_hijau, LOW);
digitalWrite(led_biru, LOW);
display.println(" ");
display.display();
//tone(buzzer, 0);
}
}