void setup() { // put your setup code here, to run once: pinMode(5,OUTPUT); pinMode(6,OUTPUT); pinMode(7,OUTPUT); pinMode(3,INPUT); digitalWrite(7,HIGH); delay(100); digitalWrite(7,LOW); digitalWrite(5,HIGH); delay(100); digitalWrite(5,LOW); } void loop() { // put your main code here, to run repeatedly: if (digitalRead(3)) { delay(10); if(digitalRead(3)) { digitalWrite(6,HIGH); delay(100); digitalWrite(6,LOW); } } }