Easy Thermometer v1

An easy to build thermometer using Arduino, digital temperature sensor, and LCD display.

BeginnerFull instructions provided4,378

Things used in this project

Hardware components

Arduino UNO

I use Arduino Duemilanove

Adafruit Standard LCD - 16x2 White on Blue

I have Black on Green

Breadboard (generic)

Jumper wires (generic)

Maxim Integrated DS18B20 Programmable Resolution 1-Wire Digital Thermometer

Resistor 221 ohm

I used 220 ohm

Resistor 4.75k ohm

I use 4.70k ohm

Software apps and online services

Arduino IDE

Story

Easy Thermometer

This project is financially low-cost.

Everyone who knows the basics of electronics and programming can do it.

Code

Code

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

#define ONE_WIRE_BUS 7

OneWire oneWire(ONE_WIRE_BUS);

DallasTemperature sensors(&oneWire);

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

double x;

void setup(void)
{
  Serial.begin(9600);
  Serial.println("Dallas Temperature Sensor");
  lcd.begin(16, 2);
  sensors.begin();
}

void loop(void)
{
  sensors.requestTemperatures();
  serial();
  x = (sensors.getTempCByIndex(0));
  delay(500);
  lcd.setCursor(0, 1);
  lcd.print(" ");
  lcd.print(x);
  lcd.print("*C");
}

void serial(){
  Serial.print("Requesting temperatures...");
  Serial.println("DONE");
  Serial.println(sensors.getTempCByIndex(0));
}