//original code by Luis Diaz
//Fab Academy 2022
//Fab Lab León
//ATtiny412 node 1 I2C

#include <Wire.h>
int d1 = 0;
#define led 4

void setup() {
  pinMode(led, OUTPUT);
  Serial.begin(115200);
  Wire.begin(8);     //change address for the nodes in my case I use 8 and 9.
  Wire.onReceive(recieveEvent);
}

void loop() {
  if (d1 == 1)
  {
    digitalWrite(led, HIGH);
  }
  else
  {
    digitalWrite(led, LOW);
  }

  delay(500);
}

void recieveEvent(int howMany)
{
  while (Wire.available())
  {
    d1 = Wire.read();
  }
}