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

//I2C MASTER CODE
//12C Communication between Two Arduino
#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd (12, 11, 5, 4, 3, 2);

void setup()
{
lcd.begin(16, 2);
lcd.setCursor(0,0);
lcd.print("skill lync");
lcd.setCursor(0,1);
lcd.print("I2C ARDUINO 2 ARDUINO");

for (int i = 0; i < 16; i++)
{
lcd.scrollDisplayLeft();
delay(100);
}

delay(2000);
lcd.clear();
Serial.begin(9600);
Wire.begin();
}

void loop()
{
Wire.requestFrom(8,1);
byte MasterReceive = Wire.read();
int potvalue = analogRead (A0);
byte MasterSend = map (potvalue, 0,1023,0,127);
Wire.beginTransmission (8);
Wire.write (MasterSend);
Wire.endTransmission ();
lcd.setCursor(0,0);
lcd.print(">> the Master <<");
lcd.setCursor(0,1);
lcd.print ("SlaveVal:");
lcd.print (MasterReceive);
Serial.println ("Master Received From the slave");
Serial.println (MasterReceive);
delay (800);
lcd.clear();
}

//I2C SLAVE CODE
//I2C Communication between Two Arduino
#include<Wire.h>
#include<LiquidCrystal.h>
LiquidCrystal lcd (12, 11, 5, 4, 3, 2);
byte SlaveReceived = 0;

void setup()
{
lcd.begin(16, 2);
lcd.setCursor(0,0);
lcd.print("skill lync");
lcd.setCursor(0,1);
lcd.print("I2C 2 ARDUINO");
delay(5000);
lcd.clear();
Serial.begin(9600);
Wire.begin(8) ;
Wire.onReceive (receiveEvent);
Wire.onRequest (requestEvent);
}

void loop (void)
{
lcd.setCursor(0,0);
lcd.print(">> the Slave <<");
lcd.setCursor(0,1);
lcd.print("MasterVal:");
lcd.print (SlaveReceived) ;
Serial.println("Slave Received From Master");
Serial.println(SlaveReceived);
delay(500);
lcd.clear();
}
void receiveEvent (int howMany)
{
SlaveReceived = Wire.read();
}
void requestEvent()
{
int potvalue = analogRead(A0);
byte SlaveSend = map(potvalue, 0,1028,0,127);
Wire.write (SlaveSend);
}