DS1820 Temp sensor

Introduction

DS1820 digital temp sensor In this experiment we will connect the DS1820 temperature sensor to the arduino, read the temperature and display it on the LCD.

This is a complex little chip. Please check out the resources at the bottom of this page for lots of information!

Components Needed

Freeduino or Arduino or clone
USB cable for Freeduino
Freeduino development software - download here!
Solderless Breadboard
Hookup wire 22gauge solid
DS1820 digital sensor
4.7K resistor (Yellow Violet Red)
LCD Display

How to

Use the breadboard and hook up the circuit as seen below. You have to use the 4.7K resistor. The device is set up in parasitic power mode. Hook the digital pin to any of the digital pins that are open. I used digital pin 3.
Download and install the library TCL 3.6.0 from http://milesburton.com/wiki/index.php?title=Dallas_Temperature_Control_Library#Code.2FLibrary. This zip file contains both the OneWire library and the DallasTemperature libraries.
Copy the folders in the zip file to the 'libraries' folder in your arduino install or into the mydocuments/arduino/libraries folder. You might have to make that folder. You will know if your libraries are correctly installed if you see them listed under Sketch->Import Library in the Arduino IDE
This library does the heavy lifting so you do not have to! This is why we create libraries!