Sensor DS18B20 Arduino วัดอุณหภูมิในน้ำ

#include <OneWire.h> 
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 2 //กำหนดขา

OneWire oneWire(ONE_WIRE_BUS); 
DallasTemperature sensors(&oneWire);

void setup(void) { 
 Serial.begin(9600); 
 Serial.println("Dallas Temperature IC Control Library");  Serial.println("by 9arduino.com"); 
 sensors.begin(); 

} 

void loop(void) {
 Serial.print(" Requesting temperatures..."); 
 sensors.requestTemperatures(); //อ่านข้อมูลจาก library
 Serial.print("Temperature is: "); 
 Serial.print(sensors.getTempCByIndex(0)); // แสดงค่า อูณหภูมิ sensor 0
delay(1000); 

}