아두이노 온도 습도 값을 읽어 불쾌지수 표시

<온도 습도 값을 읽어 불쾌지수를 계산하여 시리얼통신으로 전송하기>

 

#include <DHT.h>

 

#define DHTPIN 2

#define DHTTYPE DHT11

DHT dht(DHTPIN, DHTTYPE);

 

void setup(){

  Serial.begin(9600);

 

  dht.begin();

}

 

void loop(){

  float di = discomfortIndex();

  if (di != 0)

  {

    Serial.print("불쾌지수: ");

    Serial.println(di);

  }

}

 

int discomfortIndex()

{

  static unsigned long currTime = 0;

  static unsigned long prevTime = 0;

 

  currTime = millis();

  if (currTime - prevTime >= 2000)

  {

    prevTime = currTime;

    float humi = dht.readHumidity();

    float temp = dht.readTemperature();

 

    if (!isnan(humi)|| !isnan(temp))

    {

      float di = (1.8 * temp) - (0.55 * (1 - humi/100.0)*(1.8 *temp - 26)) + 32;

      return di;

    }

  }

  return 0;

}

 

<온도 습도 값을 읽어 불쾌지수 계산해서 LCD에 표시>

#include <DHT.h>

#include <DHT_U.h>

#include <LiquidCrystal_I2C.h>

#define DHTPIN 11

#define DHTTYPE DHT11

 

LiquidCrystal_I2C lcd(0x27, 16, 2);

DHT dht(DHTPIN, DHTTYPE);

 

int count=0;

 

void setup(){

  Serial.begin(9600);

  dht.begin();    //DHT초기화

  lcd.begin();

  lcd.backlight();

  lcd.setCursor(0,0);

  lcd.print('230724_DHT');

  delay(2000);

  lcd.clear();

}

 

void loop(){

  //DHT

  delay(2000);QD

  int di = discomfortIndex();

  if (di != 0)

  {

    Serial.print("discomfortIndex: ");

    Serial.println(di);

    lcd.setCursor(0,0);

    lcd.print("discomfortIndex:");

    lcd.setCursor(0,1);

    lcd.print(di);

  }

}

  int discomfortIndex()

  {

    static unsigned long currTime = 0;

    static unsigned long prevTime = 0;

 

    currTime = millis();

    if (currTime - prevTime >= 2000)

    {

      prevTime = currTime;

      float humi = dht.readHumidity();

      float temp = dht.readTemperature();

 

      if (!isnan(humi)|| !isnan(temp))

      {

        float di = (1.8 * temp) - (0.55 * (1 - humi/100.0)*(1.8 *temp - 26)) + 32;

        return di;

      }

    }

    return 0;

  }