Project 1 - Interfacing a 16*2 LCD with Arduino using I2C protocol

Interfacing a 16*2 LCD with Arduino’s

CIRCUIT DESIGN:

MASTER CODE:

#include <Wire.h>

void setup() {

Serial.begin(9600);

Serial.println("\nI2C Scanner");

Serial.println("Scanning...");

byte device_count = 0;

Wire.begin();

for (byte address = 1;

address < 127; address++ ){

Wire.beginTransmission(address);

if (Wire.endTransmission() == 0) {

// Serial.print ("Found address: ");

Serial.print("I2C device found at address 0x");

Serial.print(address, HEX);

Serial.println(" !");

device_count++;

delay(1);

}

}

Serial.println ("Done.");

Serial.print ("Found ");

Serial.print (device_count);

Serial.println (" device(s).");

}

void loop() {}

From above simulation we have to note the Address of I2C LCD (Here ....0x20) to run the LCDdisplay.

Code to display in I2C LED:

SLAVE CODE:

#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x20,16,2);

void setup() {

lcd.init();

lcd.clear();

lcd.backlight();

lcd.setCursor(2,0);

lcd.print("This is ARDUINO");

lcd.setCursor(2,1);

lcd.print("LCD I2C display");

}

void loop() {}