// Include the required Wire library for I2C #include int x; int led = 12; void setup() { pinMode (LED_BUILTIN, OUTPUT); pinMode(led, OUTPUT); Serial.begin(9600); Wire.begin(9); Wire.onReceive(receiveEvent); } void receiveEvent(int bytes) { x = Wire.read(); Serial.println("recieved"); } void loop() { Serial.println(x); if(x == 0 || x == 1 || x == 2 || x == 3 || x == 4 || x == 5) { digitalWrite(led, HIGH); digitalWrite(LED_BUILTIN, HIGH); delay(400); digitalWrite(LED_BUILTIN, LOW); digitalWrite(led, LOW); delay(400); } }