Tietoa

• Malli: Dallas DS18B20 (Datasheet)
• Käyttää 1-Wire-teknologiaa
• Paketointi: TO92
• 3 pinniä: GND, DQ, VDD
• Sisääntulojännite: 3.0 - 5.5 V
• Resoluutio: 9-12 bittiä
• Mittausalue:  -10°C ~ +85°C
• Tarkkuus: ±0.5°C

Esimerkkikoodi Arduinolle

#include 
#include 
 
// Data wire is plugged into pin 2 on the Arduino
#define ONE_WIRE_BUS 2
 
// Setup a oneWire instance to communicate with any OneWire devices 
OneWire oneWire(ONE_WIRE_BUS);
 
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
 
void setup() {
  // start serial port
  Serial.begin(9600);
  Serial.println("Dallas Temperature IC Control Library Demo");
  // Start up the library
  sensors.begin();
}

void loop() {
  // call sensors.requestTemperatures() to issue a global temperature
  // request to all devices on the bus
  Serial.print(" Requesting temperatures...");
  sensors.requestTemperatures();
  Serial.println("DONE");

  Serial.print("Temperature for Device 1 is: ");
  Serial.print(sensors.getTempCByIndex(0));
    // You can have more than one IC on the same bus. 
    // 0 refers to the first IC on the wire
}

Linkkejä

DS18B20 Datasheet

Arduino Onewire-kirjasto

Dallas Temperature -kirjasto

Arduino-käyttöopas