Arduino LCD Program Interfacing
Arduino Arduino based projects Electronics tutorial

Arduino LCD Program Interfacing Diagram

In this article you will see Arduino LCD Program with Interfacing Diagram. Liquid Crystal Display (LCD) is now being used in every electronics field either it is analog or digital. To learn how LCD works with Arduino, one should know the basics of LCD. Commonly used LCD has 8 bits.

Standard 16×2 LCD Display:

Liquid Crystal Display

There are build-in functions in Arduino software for LCD to display something on LCD, to clear, to move data. Interfacing LCD module to Arduino is very easy, here you will learn how to interface LCD with Arduino.

Components Required:

Arduino UNO R3 board

Variable Resistor 10k

Resistor 220 ohm

8 bit LCD

Mini breadboard

Few wires & Cable for power

Circuit:

click the image to enlarge.

Arduino LCD Program Interfacing
LCD interface to Arduino

 

Circuit connections:

  1.  RS pin of LCD connects to digital pin 12 of Arduino
  2.  Pin E (Enable) connected to digital pin 11
  3.  Pin D4 connects to pin number 5
  4.  D5 pin connects to digital pin 4
  5.  Pin D6 connects to digital pin 3
  6.  Pin D7 connects to digital pin 2
  7.  R / W pin connected to the GND
  8.  Pin 1 and pin 4 connected to GND
  9.  Pin 2 connected to + VCC
  10.  10 K Ohm potentiometer controls brightness of panel
  11.  Second pin connected to pin 3 of the LCD
  12.  First pin of potentiometer connected to + VCC
  13.  Third pin of potentiometer connected to GND
  14.  The first and third pins of the potentiometer can be interchanged.

Working by Code:

#include <LiquidCrystal.h>
int i = 0;

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

In the above instance LiquidCrystal object called LCD is created in which
the LCD pins connected to the Arduino digital outputs are shown.

void setup () {
To set the number of rows and columns of lcd
lcd.begin (16, 2);
printed on
lcd.print (“Hackatronic.com “);
}

void loop () {
// place the cursor on column 0 and line 1
//lcd.print (micros () / 1000); <= this will print count
lcd.print(“^^^”);
lcd.print(”   “);
delay(100);
}

Interfacing LCD to Arduino
Interfacing LCD to Arduino

Arduino LCD Program:

#include <LiquidCrystal.h>
int i = 0;
LiquidCrystal lcd (12, 11, 5, 4, 3, 2);
void setup () {
lcd.begin (16, 2);
lcd.print (“Hackatronic.com “);
}

void loop () {
// print the number of seconds since the last reset
//lcd.print (micros () / 1000);
lcd.print(“^^^”);
lcd.print(”   “);
delay(100);
}

Here is Tinkercad simulation

 

Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.