Arduino UNO for CM2305 Hummidity Tempeture Sensor Program

[사진사랑]

//============ [ CM2305 Hummidity Tempeture Sensor Program=====================
//             Programmed by MyungHak JOO at 2018/11/06
//=============================================================================
     
      // Example testing sketch for various DHT humidity/temperature sensors
      // Written by ladyada, public domain
// =======================연결방법============================================
// CM2305  VDD(1번핀) -----> arduino UNO 5V    Power 2번핀
// CM2305  SDA(2번핀) -----> arduino UNO Digital 2번핀 그리고 4.7kohm저항 연결하여 VDD로 연결 ( PullUp)처리해야 함
// CM2305  GND(3번핀) -----> arduino UNO Power 6번 또는 7번핀
// ===========================================================================

#include "DHT.h"

#define DHTPIN 2     // what digital pin we're connected to

      // Uncomment whatever type you're using!
      // #define DHTTYPE DHT11   // DHT 11
#define DHTTYPE DHT22   // DHT 22  (AM2302), AM2321   
      //#define DHTTYPE DHT21   // DHT 21 (AM2301)

      // Connect pin 1 (on the left) of the sensor to +5V
      // NOTE: If using a board with 3.3V logic like an Arduino Due connect pin 1
      // to 3.3V instead of 5V!
      // Connect pin 2 of the sensor to whatever your DHTPIN is
      // Connect pin 4 (on the right) of the sensor to GROUND
      // Connect a 10K resistor from pin 2 (data) to pin 1 (power) of the sensor

      // Initialize DHT sensor.
      // Note that older versions of this library took an optional third parameter to
      // tweak the timings for faster processors.  This parameter is no longer needed
      // as the current DHT reading algorithm adjusts itself to work on faster procs.
DHT dht(DHTPIN, DHTTYPE);

void setup() {
  Serial.begin(9600);
//  Serial.println("CM2305 Tempeture Sensor!");

  dht.begin();
}

void loop() {
        // Wait a few seconds between measurements.
  delay(100);

              // Reading temperature or humidity takes about 250 milliseconds!
              // Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
  float h = dht.readHumidity();
              // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
              // Read temperature as Fahrenheit (isFahrenheit = true)
  float f = dht.readTemperature(true);

              // Check if any reads failed and exit early (to try again).
  if (isnan(h) || isnan(t) || isnan(f)) {
    Serial.println("Failed to read from CM2305 sensor!");
    return;
  }

             // Compute heat index in Fahrenheit (the default)
  float hif = dht.computeHeatIndex(f, h);
              // Compute heat index in Celsius (isFahreheit = false)
  float hic = dht.computeHeatIndex(t, h, false);

//  Serial.print("Humidity: ");
//  Serial.print(h);
//  Serial.print(" %\t");

// Serial.print(",      ");
 
//  Serial.print("Temperature: ");
  Serial.print(t);           // 온도 (섭씨)
//  Serial.print(" *C ");
  // Serial.print(f);           // 온도 (화씨)
  // Serial.print(" *F\t");

 
  // Serial.print("Heat index: ");
  // Serial.print(hic);         // 계산된 섭씨온도
  // Serial.print(" *C ");

 
  // Serial.print(hif);         //계산된 화씨온도
  // Serial.println(" *F");
//   Serial.println("Sensor received OK!! ");
Serial.println("   ");
}