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).

Project - 1

Circuit Diagram

Code -

// Slave code //

#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(12,11,5,4,3,2);
char z[11];
int t=0;
void setup()
{
Wire.begin(8);
Wire.onReceive(doit);
lcd.begin(16,2);
}
void loop()
{

}
void doit(int howMany)
{
lcd.clear();
for(t=0;t<12;t++)
{
char a=Wire.read();
z[t]=a;
}
//lcd.autoscroll();
lcd.print(z);
delay(9000);
delay(10);

}

// Master code //

#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd(12,11,5,4,3,2);
char c[11];
void setup()
{
Wire.begin();
lcd.begin(16,2);
}
void loop()
{
// lcd.clear();
for(int i=0;i<=12;i++)
{

char a[]="Drive Safe";

c[i]=a[i];
}
lcd.print(c);
Wire.beginTransmission(8);
Wire.write(c);
Wire.endTransmission();
delay(8000);



}

// C++ code //

void setup()
{
pinMode(LED_BUILTIN, OUTPUT);
}

void loop()
{
digitalWrite(LED_BUILTIN, HIGH);
delay(1000); // Wait for 1000 millisecond(s)
digitalWrite(LED_BUILTIN, LOW);
delay(1000); // Wait for 1000 millisecond(s)
}

Output

Link

https://www.tinkercad.com/things/1ybnVFJHcwd-terrific-krunk-snicket/editel?sharecode=smiG2HfNXba50nOi-hBQDBM7uxqbCthmimajcSTXh0Q