#include "TinyWireS.h"                  // wrapper class for I2C slave routines
#define I2C_SLAVE_ADDR  0x2            // i2c slave address (38)
#define LED1_PIN         2              // ATtiny Pin ESTO ES LA 1 PLACA
byte byteRcvd = 0;
void setup(){
  pinMode(LED1_PIN,OUTPUT);             // for general DEBUG use
  TinyWireS.begin(I2C_SLAVE_ADDR);      // init I2C Slave mode
}

void loop(){
  if (TinyWireS.available()){           // got I2C input!
    byteRcvd = TinyWireS.receive();     // get the byte from master
    if(byteRcvd == 1)
    {
      digitalWrite(LED1_PIN,HIGH);
    }
    else
    {
      digitalWrite(LED1_PIN,LOW);
    }
//    TinyWireS.send(byteRcvd);           // send it back to master
    }
}