const int buttonPin = 7; const int ledPin = 8; int buttonState = 0; int a = 1000; void setup() { pinMode(ledPin, OUTPUT); pinMode(buttonPin, INPUT); digitalWrite(buttonPin, HIGH); digitalWrite(ledPin, LOW); } void loop() { buttonState = digitalRead(buttonPin); if (buttonState == LOW) { for (int i=0; i<=2; i++){ digitalWrite(ledPin, HIGH); delay(a); digitalWrite(ledPin, LOW); delay(a); } }else{ digitalWrite(ledPin, LOW); } }