DS18B20 Waterproof Temperature Sensor with Maker UNO

Introduction

Are you trying to read liquid💧 temperature and don’t know how🧐? Here is one of the ways on how to get the liquid temperature using DS1820B waterproof temperature sensor on Maker UNO.. And the reading will be displayed on the I2C LCD. It’s so easy!

Video

Watch this video for more info on how to use DS18B20 Waterproof Temperature Sensor with Maker UNO.

This is the hardware connection and the components needed.

Sample Code

// Include the libraries we need
#include <OneWire.h>
#include <DallasTemperature.h>
#include <LiquidCrystal_I2C.h>
#define ONE_WIRE_BUS 9
float Celsius = 0;
float Fahrenheit = 0;
LiquidCrystal_I2C lcd(0x27, 20, 2); // set the LCD address to 0x27 for a 16 chars and 2 line display
OneWire oneWire(ONE_WIRE_BUS); // Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
DallasTemperature sensors(&oneWire); // Pass our oneWire reference to Dallas Temperature.
void setup() {
lcd.init();
lcd.backlight();
sensors.begin();
Serial.begin(9600);
}
void loop() {
sensors.requestTemperatures();
Celsius = sensors.getTempCByIndex(0);
Fahrenheit = sensors.toFahrenheit(Celsius);
Serial.print(Celsius);
Serial.print(" C ");
Serial.print(Fahrenheit);
Serial.println(" F");
lcd.setCursor(2, 0);
lcd.print("TEMPERATURE");
lcd.setCursor(0, 1);
lcd.print((char)223);
lcd.setCursor(1, 1);
lcd.print("C:");
lcd.setCursor(3, 1);
lcd.print(Celsius, 1); //display the temperature in 1 decimal place
lcd.setCursor(8, 1);
lcd.print((char)223);
lcd.setCursor(9, 1);
lcd.print("F:");
lcd.setCursor(11, 1);
lcd.print(Fahrenheit, 1); //display the temperature in 1 decimal place
delay(1000);
}

view raw
DS18B20.ino
hosted with ❤ by GitHub

Reference

Arduino DS18b20 Temperature Sensor Tutorial

Thank you

Thank you for reading this tutorial and we hope it helps your project development. If you have any technical inquiries, please post at Cytron Technical Forum.

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