HOW TO CONNECT A SERIAL LCD WITH AN
ARDUINO NANO
I demonstrated how to connect the serial LCD to an Arduino UNO 
In this we have to describe how to connect the serial LCD to Arduino Nano
Step 1: REQUIREMENT’S
- An Arduino Nano or a Nano compatible
- A solderless breadboard
- An LCD with an I2C
- Four jumper wires
Step 2: Connect the LCD and the NANO 
- The Arduino Nano pinout diagram indicates clearly that the pin A4 and A5 is for SDA and SCL respectively.
- The Arduino Nano is placed on the breadboard.
- The black jumper cable is connected to GND pin on the LCD to the BND pin on the Nano
- The red jumper cable is connected to VCC pin on the LCD to the VCC pin on the nano.
- The green jumper cable is Connected to the SDA pin on the LCD to the A4 pin on the NANO
- The yellow jumper cable is Connected to the SCL pin on the LCD to the A5 pin on the NANO
- Load the Arduino IDE and upload the sketch
Step 3: The Sketch

//load libraries
#include <Wire.h>
#include <Wire.h>
#include <LCD.h>
#include <LiquidCrystal_I2C.h>
//Define variables 
#define I2C_ADDR          0x27        //Define I2C Address where the PCF8574A
is
#define BACKLIGHT_PIN      3
#define En_pin             2
#define Rw_pin             1
#define Rs_pin             0
#define D4_pin             4
#define D5_pin             5
#define D6_pin             6
#define D7_pin             7
//Initialise the LCD
LiquidCrystal_I2C      lcd(I2C_ADDR,
En_pin,Rw_pin,Rs_pin,D4_pin,D5_pin,D6_pin,D7_pin);
void setup()
 {
   
//Define the LCD as 16 column by 2 rows 
   
lcd.begin (16,2);
   
//Switch on the backlight
   
lcd.setBacklightPin(BACKLIGHT_PIN,POSITIVE);
   
lcd.setBacklight(HIGH);
   
//goto first column (column 0) and first line (Line 0)
   
lcd.setCursor(5,0);
   
//Print at cursor Location
   
lcd.print("HAPPY");
   
//goto first column (column 0) and second line (line 1)
   
lcd.setCursor(3,1);
    lcd.print("Halloween");
 }
void loop(){ }
Step 4 : Feedback
After
assembling the whole the LCD works according to the Arduino Nano.
Revert me
the feedback of this…….





 
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