I2C CODE BY SYED TINKERCAD

 

AURDINO 1:-

//Master Code

#include <Wire.h> //i2c library

int pushbutton=A0;

void setup()

{

  Wire.begin();

 pinMode(pushbutton, INPUT_PULLUP);

}

int x = 0;

void loop()

{

  Wire.beginTransmission(4); 

 x = !digitalRead(pushbutton);

   Wire.write(x);                

  Wire.endTransmission();   

  delay(500);

}

AURDINO 2:-

//Slave Code

#include <Wire.h>

int led=13;

void setup()

{

  Wire.begin(4);                

  Wire.onReceive(receiveEvent); 

  Serial.begin(9600);

  pinMode(led,OUTPUT);

}

void loop()

{

  delay(100);

}

void receiveEvent(int howMany)

{

  int x = Wire.read();    

  Serial.println(x); 

 if (x==1)

 {

   digitalWrite(led,HIGH);

 }

 else

 {

   digitalWrite(led,LOW);

 }

  

}