How to connect 16*2 LCD display Arduino UNO

To Connect 16*2 LCD Display Arduino Uno we will use the previous project to capture temperature and display on console.

Parts required for the project:

1. Arduino IDE to program the code and upload
2. OneWire and DallasTemperatre library for the Arduino and DS18B20
3. One DS18B20 digital temperature sensor
4. Arduino UNO R3
5. 16*2 LCD display
6. Jumper wires
7. Breadboard/PC/General purpose board
8. Arduino UNO cable
9. wires

Steps 1: Wiring Arduino and DS18B20

• The wiring, of a 1-wire interface, is super simple.
• The GND pin of the DS18B20 goes to GND on the Arduino. [black]
• The Vdd pin of the DS18B20 goes to +5V on the Arduino. [red]
• The Data pin of the DS18B20 goes to a (digital) pin of your choice on the Arduino, in this example I used Pin 7
• Add a pull-up resistor of 4.7 KΩ. as shown in the schematic diagram. One end of resistor connecting Vdd and another end connecting data pin.

Step 2: Connecting the LCD display

• VSS –> GND Arduino
• VDP –> 5V Arduino
• VO –> output potentiometer (potentiometer VCC -> 5V Arduino, potentiometer GND -> Arduino GND).
• RS –> pin 12 Arduino
• RW –> GND Arduino
• E –> pin 11 Arduino
• D4 –> pin 5 Arduino
• D5 –> pin 4 Arduino
• D6 –> pin 3 Arduino
• D7 –> pin 2 Arduino
• A –> 5V Arduino with 1.2 k resistor
• K –> GND Arduino

 

Step 3: WRITING CODE AND UPLOADING

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

// Data wire is plugged into digital pin2
#define ONE_WIRE_BUS 7
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
//LCD display pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
double temperature;
void setup(void)
{
 Serial.begin(9600);
 //Serial.println("Temperature Demo");
 sensors.begin();
 lcd.begin(16, 2);
 lcd.print("hello, WORLD");

}
void loop()
{
 sensors.requestTemperatures(); // send command to get temperatures
 delay(500);
 temperature= sensors.getTempCByIndex(0);
 delay(1000);
 lcd.display();
 lcd.setCursor(0, 1);
 lcd.print("Temp: ");
 lcd.setCursor(7, 1);
 lcd.print(temperature);
 lcd.print(" C");
 
}

Screenshot of the Project output