LCD Interfacing With Arduino

LCD stands for Liquid Crystal Display. There are different types of displays (like TFT, OLED, Dot Matrix) available in the market for Arduino interfacing. The display we are going to interface with is a 16×2 display. This display has two rows and sixteen columns, Which means a maximum 32 characters can display at a time. Every character has 8×5 pixels.

Table of Contents

Components Required:

One Arduino UNO
Computer with Arduino IDE
USB to Arduino connecting Cable
Jumper Wires
16×2 LCD Display
10k Potentiometer (To control Brightness)

16×2 LCD PINS:

LCD Pins With Function:

PIN NO	NAME	Function
1	VSS	GND
2	VCC	Supply Voltage For Logic
3	VEE	Supply Voltage For LCD Contrast
4;	RS	Register Select
5	R/W	Read Or Write Data
6	E	Enable Chip
7	D0	Data Bit 0
8	D1	Data Bit 1
9	D2	Data Bit 2
10	D3	Data Bit 3
11	D4	Data Bit 4
12	D5	Data Bit 5
13	D6	Data Bit 66
14	D7	Data Bit 7
15	A(Led+)	Anode For Led Back Light
16	K(Led-)	Cathode For Led Back Light

Circuit Diagram:

Steps To Follow::

Establish the given circuit
Open Arduino IDE.
Click on File.
Go to New. – A new File will open
Remove the Pre-Written code..
Paste the code given in the “CODE Section”
Check whether your UNO has been detected by the ID by going to Tools.
Click on Port – Select the COM-Port on which Arduino UNO is detected.
Verify the Sketch by Clicking on the TICK icon.
Once, the sketch is verified, Upload the sketch using the ARROW icon.

Code:

#include <LiquidCrystal.h>
// Initialize LCD with following connections
LiquidCrystal lcd(10, 9, 8, 7, 6, 5);
void setup() {
// Setup LCD Size : Columns, Rows
lcd.begin(16, 2);
// Display a message on the LCD.
lcd.print("hello, world!");
}
void loop() {
// Set position of the cursor to column 0, line 1
// Note : Counting starts from 0
lcd.setCursor(0, 1);
// Displays the number of seconds since reset
lcd.print(millis()/1000);
}

LCD Interfacing With Arduino Board