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

1.

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).

Answer:

Master code :

#include <LiquidCrystal.h>
#include<Wire.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup()
{
lcd.begin(16,2);
lcd.setCursor(5,0);
lcd.print("MASTER");
lcd.setCursor(4,1);
lcd.print("Arduino");
delay(4000);
lcd.clear();
Wire.begin();
}

void loop()

{
const int dataToSend = 42;
Wire.beginTransmission(8);
Wire.write(dataToSend);
Wire.endTransmission();

lcd.setCursor(0,0);
lcd.print("Master");
lcd.setCursor(0,1);
lcd.print("Sending Data...");
delay(500);
lcd.clear();
}

Slave code:

#include<LiquidCrystal.h>
#include<Wire.h>

LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
byte SlaveReceived = 0;
void setup()
{
lcd.begin(16,2);
lcd.setCursor(5,0);
lcd.print("Slave");
lcd.setCursor(4,1);
lcd.print("Arduino");
delay(4000);
lcd.clear();
Wire.begin(8);
}

void loop(void)
{
lcd.setCursor(0,0);
lcd.print("Slave");
lcd.setCursor(0,1);
lcd.print("Recieving Data...");
Wire.onReceive(receiveEvent);
delay(3000);
lcd.clear();
lcd.setCursor(0,0);
lcd.print("Recieved data :");
lcd.setCursor(0,1);
lcd.print(SlaveReceived);
Serial.println("Slave Received From Master:");

delay(5000);
lcd.clear();

}

void receiveEvent (int howMany)
{
SlaveReceived = Wire.read();
}