Arduino Thermometer With DS18B20

ermometer with DS18B20 digitaltemperature sensor using Arduino, breadboard, jumpers. So you can measure temperature of the air, liquids like water and the temperature of the ground.

*prints the temperature data on the serial monitor of the arduino IDE.

DS18B20 is 1-Wire digital temperature sensor from Maxim IC. Reports degrees in Celsius with 9 to 12-bit precision, from -55 to 125 (+/-0.5). Each sensor has a unique 64-Bit Serial number etched into it – allows for a huge number of sensors to be used on one data bus.

Features:

  • Unique 1-Wire® interface requires only one port pin for communication
  • Each device has a unique 64-bit serial code stored in an onboard ROM
  • Multidrop capability simplifies distributed temperature sensing applications
  • Requires no external components
  • Can be powered from data line.
  • Power supply range is 3.0V to 5.5V
  • Measures temperatures from –55°C to +125°C (–67°F to +257°F)±0.5°C accuracy from –10°C to +85°C
  • Thermometer resolution is user-selectable from 9 to 12 bits
  • Converts temperature to 12-bit digital word in 750ms (max.)
  • User-definable nonvolatile (NV) alarm settings
  • Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
  • Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system

o make the thermometer you will need the following things:

  1. Arduino board (UNO,DUE,Micro, etc..).
  2. DS18B20 sensor a waterproof or not and one 4.7k resistor*
  3. 16×2 LCD display with I2C bus.
  4. Breadboard and some jumpers to connect everything together.

*Some stores sell the sensor with 4.7k resistor

Step 3: Libraries !!!

Before you start to make the thermometer, download and unzip the following libraries for arduino at – /Progam Files(x86)/Arduino/Libraries (default)

  1. 1- Wire bus
  2. Dallas Temperature, it does all the calculations and other stuff
  3. Liquid Crystal I2C

For more detail: Arduino Thermometer With DS18B20

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