#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include "DHT.h"
#define DHTPIN 2
#define DHTTYPE DHT22
#define SCREEN_WIDTH 128 // OLED display width,  in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
DHT dht(DHTPIN, DHTTYPE);
int relay =7;



// declare an SSD1306 display object connected to I2C
Adafruit_SSD1306 oled(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, -1);

void setup() {
  Serial.begin(9600);

  // initialize OLED display with address 0x3C for 128x64
  if (!oled.begin(SSD1306_SWITCHCAPVCC, 0x3C)) {
    Serial.println(F("SSD1306 allocation failed"));
    while (true);
  }
}

void loop() {
//
  float humi  = dht.readHumidity();    // read humidity
  float tempC = dht.readTemperature(); // read temperature
  //
  delay(2000);         // wait for initializing
  oled.clearDisplay(); // clear display
  if (isnan(humi) || isnan(tempC)) {
    oled.setTextSize(1);          // text size
    oled.setTextColor(WHITE);     // text color
    oled.setCursor(0, 10);        // position to display
    oled.println("Failed"); // text to display
   } else {
    oled.setTextSize(1);          // text size
    oled.setTextColor(WHITE);     // text color
    oled.setCursor(0, 10);        // position to display
    oled.println("Temp: "); // text to display
    oled.println(tempC);     // print the temperature
    oled.println((char)223); // print ° character
    oled.println("C");
//
    oled.setCursor(0, 20);  // start to print at the second row
    oled.println("Humi: ");
    oled.println(humi);      // print the humidity
    oled.println("%");
//
    oled.setCursor(0, 30); // start to print at fourth row
    oled.println("Factor: ");
    oled.println(((tempC*1.8)+32)+humi);
    }
    //
   if ((((tempC*1.8)+32)+humi) > 200) {
  digitalWrite(7,HIGH);
  } else { 
  digitalWrite(7,LOW);
  }
}