DS18B20 µðÁöÅÐ ¿Âµµ°è Digital Thermometer
ÆǸŰ¡°Ý : 1,540¿ø (ºÎ°¡¼¼ Æ÷ÇÔ)
»óÇ°ÄÚµå : [3127]MIZ-DS18B2-ZAS
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´ëü »óÇ° : ¹ÝµµÃ¼ ¿Âµµ¼¾¼­(TMP36 - Temperature Sensor) ¶Ç´Â KEV-6601 À» °Ë»öÇØÁÖ¼¼¿ä.


µ¥ÀÌÅͽÃÆ®http://datasheets.maximintegrated.com/en/ds/DS18B20.pdf





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#include

int SensorPin = 13; //Our sensor is connected to digital pin 10


//Initiate OneWire communication
OneWire ds(SensorPin);

void setup(void) {
//Initiate serial communication with our computer
  Serial.begin(9600);
  digitalWrite(8,HIGH);
}

void loop(void) {

float T = readT(); // call function to read from sensor
Serial.print("Temperature is: "); // print out results to us
Serial.print(T);
Serial.println(" deg.C"); // print out results to us
delay(750);

}

float readT(){
//returns the temperature from our sensor

byte data[12];
byte addr[8];

if ( !ds.search(addr)) {
ds.reset_search();
return -300; // if there is no sensor on OneWire Bus, return -300 value
}

ds.reset();
ds.select(addr);
ds.write(0x44,1); // tell sensor to start converting
ds.reset();
ds.select(addr);
ds.write(0xBE); // tell sensor to start sending data

for (int i = 0; i < 9; i++) { // we receive data in this loop
data[i] = ds.read();
}

ds.reset_search();

byte MSB = data[1];
byte LSB = data[0];

float raw = ((MSB << 8) | LSB); // move MSB left for 8 spaces, join that with LSB
float realTempC = raw / 16; // move decimal point left for 4 spaces, result our temperature
return realTempC;

}
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