unsigned long changeTime;
int casDelay = 300;


void setup() {
  Serial.begin(115200);
  changeTime = millis();
  pinMode(5, OUTPUT);
  pinMode(4, INPUT_PULLUP);
  pinMode(6, OUTPUT);

}

void loop() {
  if((millis()- changeTime)>casDelay){
    changeTime = millis();
    digitalWrite(5, HIGH);
    delay(10);
    digitalWrite(5, LOW);
  }
  if(digitalRead(4)==LOW){
    digitalWrite(6, HIGH);
  }
  else{
    digitalWrite(6, LOW);
  }
  

}