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

Overview of the Project:

In this project implementing the Code for “Interfacing a 16*2 LCD with two Arduino’s (one for Master and one for Slave) using Inter-Integrated Circuit (I2C) communication protocol” by sending the message to LCD using I2C communication protocol and display the message on LCD screen.

Goals:

• Communication between Arduino and 16*2 LCD using I2C protocol.
• Displaying the message sent by Master and received by slave i.e. LCD display.

Key Highlights of the Project:

• Using the inter-integrated circuit communication protocol, transferring the data i.e. the message we want to display is sent to the LCD.
• Two Arduino’s connected to the LCD display and the communication is executed using I2C protocol between Arduino and the LDC display.

Deliverables of this project:

• Communication between the Arduino’s and LCD using I2C.
• The message passed from master to slave and displayed on the 16*2 LCD.

Expected Outcomes:

• Students will get the Knowledge of I2C communication Protocol and the Arduino.
• The Hardware connection of all components used in this project.
• Displaying the message sent by master (Arduino) and received by the slave (16*2 LCD display).

-> Firstly we take two ardino in tinkercad

-> connect both by SDC , SCl and ground than connect LCD to slave .

CODE for MASTER

// For master

#include <Wire.h> // I2C library

void setup() {

Wire.begin(); // join i2c bus (address optional for master)

Serial.begin(9600); // start serial for output

}

void loop() {

Wire.requestFrom(8, 6); // request 6 bytes from slave device #8

while (Wire.available()) { // slave may send less than requested

char c = Wire.read();// receive a byte as character

Serial.println(c); // print the character

}

delay(500);

}

For Slave

// FOR slave

#include <Wire.h> // I2c protocol library

#include <LiquidCrystal.h> // LCD library

LiquidCrystal lcd(2,3,4,5,6,7);// to connect LCD pins to ardino pins

void setup() {

Wire.begin(8); // join i2c bus with address #8

lcd.clear();

lcd.begin(16,2);

Wire.onRequest(requestEvent); // register event

}

void loop() {

// lcd.setCursor(6,0);

//lcd.print("Hello");

delay(100);

}

// function that executes whenever data is requested by master

// this function is registered as an event, see setup()

void requestEvent() {

Wire.write("hello "); // respond with message of 6 bytes

// as expected by master

lcd.setCursor(6,0);

lcd.print("Hello");

delay(100);

}