#include <TinyWireS.h>
                                    #define LED 3
                                    #define I2C_SLAVE_ADDR (1)
                                    void setup() {
                                    
                                    TinyWireS.begin(I2C_SLAVE_ADDR);
                                    pinMode(LED, OUTPUT);
                                    }
                                     
                                    void loop() {
                                    if (TinyWireS.available())
                                    byte data = TinyWireS.receive();
                                    if (data == 1)
                                    digitalWrite(LED, HIGH);
                                    else if (data == 0)
                                    digitalWrite(LED, LOW);
                                    
                                    }