//original code by Luis Diaz
//Fab Academy 2022
//Fab Lab León
//ATtiny412 node 3 I2C
//Gothen from http://fabacademy.org/2020/labs/leon/students/adrian-torres/week14.html
//Edited by Hafey
#include <Wire.h>
int d1 = 0;
int buzzer = 3;

void setup() {
  pinMode(buzzer, OUTPUT);
  Serial.begin(115200);
  Wire.begin(3);     //change address
  Wire.onReceive(recieveEvent);
}
void loop() {
  if (d1 == 3)
{
 tone(4, 1000); // Send 1KHz sound signal...
  delay(600);        // ...for 1 sec
 
}
else
{
  digitalWrite(4,LOW);
 }
}
void recieveEvent(int howMany)
{
  while (Wire.available())
  {
    d1 = Wire.read();
  }
}