Arduino偵測溫室效應實作

				
					// Excel datalogger using Arduino and DHT22 sensor

#include <DHT.h>              // Include DHT library code

#define DHTPIN  2             // DHT22 data pin is connected to Arduino pin 2

#define DHTTYPE DHT22         // DHT22 sensor is used
DHT dht(DHTPIN, DHTTYPE);     // Initialize DHT library

void setup() {
  Serial.begin(9600);         // Initialize serial communications with the PC

  dht.begin();                // Initialize the DHT library

  Serial.println("CLEARDATA");       // Clear all Excel sheet data
  // Label columns: A for date, B for time, C for temperature and D for humidity
  Serial.println("LABEL,Date,Time,Temperature,Humidity");
}

void loop() {
  Serial.print("DATA,DATE,TIME,");       // Write date and time on row A and row B respectively
  Serial.print(dht.readTemperature());   // Read temperature from sensor and send its value to Excel
  Serial.print(",");                     // Move to next column
  Serial.print(dht.readHumidity());      // Read humidity from sensor and send its value to Excel
  Serial.println(",");                   // Move to next column and start new row

  delay(1000);                           // Wait 1 second
}
    RickyChen