Interface LCD with an Arduino – LCD Arduino Projects

Hey guys, here is my next blog on LCD interfacing with ARDUINO. Most of the circuits of LCD Arduino projects we saw LCD interfacing, As we know that LCD stands for ‘Liquid Crystal Display’ play a very important role. It is used in different types of devices like in calculator, TVs, any advertising board, etc.

The liquid crystal display uses the property of light monitoring of liquid crystal and they do not emit light directly. The LCD is a flat panel display or the electronic visual display. With low information, content the LCDs are obtained in the fixed image or the hidden like present words, digits, or seven segments display.

Here, we are working with a 16*2 display in which 32 characters are present in two lines. We should know that to display each character there are 5*10 pixels. Thus to display one character all the 50 pixels should be together.

In LCD, there is a controller which is HD44780 it is used to control the pixels of character to display. This module has 16-pins and can be functioned in 4-bit mode or 8-bit mode. Here we are using the LCD module in 4-bit mode. Before going into details of this project, let’s have a look at the LCD module.

REQUIREMENT FOR  PROJECT:

Hardware components:

1. 16*2 LCD module
2. Arduino UNO
3. Jumper wires
4. 10K Potentiometer
5. Breadboard

Software used:

1. Arduino IDE

PIN DIAGRAM OF LCD 16*2 MODULE

Pin and their specific function are as given below.

CIRCUIT DIAGRAM FOR INTERFACING LCD ARDUINO PROJECTS:

Follow the following steps for connecting the LCD to Arduino.

• Step1: connect RS pin of LCD module to the digital pin 7 of the Arduino board.
• Step2: connect the Enable(E) pin to digital pin 9 of the Arduino board.  
• Step3: connect the R/W pin to the GND pin of Arduino.
• Step4: connect digital pins 10,11,12,13 of Arduino to DB4, DB5, DB6, DB7 pin of LCD module ,resp.
• Step5: connect pin-1(Vss) & pin-16(LED-) of LCD module to GND.
• Step6: connect pin-2(Vcc) & pin-15(LED+) of LCD module to +5V.
• Step7: connect pin-3(VEE) to the center pin of potentiometer used.

Here is circuit diagram for connection of  interfacing LCD with Arduino:-

Fig, circuit diagram of  LCD interfacing with arduino.

Coding for the LCD Arduino Projects:

// include the library code:
#include <LiquidCrystal.h>
// initialize the library by associating any needed LCD interface pin
// with the arduino pin number it is connected to
const int rs = 7, en = 9, d4 = 10, d5 = 11, d6 = 12, d7 = 13;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup() 
{
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("PICTOROBO.IN");
}
void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  lcd.print("OK");
}

Output LCD Arduino Projects:

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