#include <Wire.h>

const int ledPin = 7;
const int buttonPin = 10;
const int potPin = A1;

bool state;
bool previousState;

void setup() {

Wire.begin(); 

pinMode (ledPin, OUTPUT);
pinMode (buttonPin, INPUT);
state = false;
previousState = state; 

}

void loop() {

  if (digitalRead(buttonPin) && !previousState) {
     Wire.beginTransmission(8);
    state = !state;
    previousState = true;
    digitalWrite(ledPin, state);
    if (state) {
      Wire.write("LED ON");
    } else {
      Wire.write("LED OFF");
      
    }
    Wire.endTransmission();
  }

  if (!digitalRead(buttonPin)) {
    previousState = false;
  }
}