boolean onoff;
void delayme(int thedelay)
{
  long time_now = millis();
  for (;;)
  {
    if (millis() - time_now > thedelay - 1)
    {
      time_now = millis();
      break;
    }
  }
}


void setup() {
 // put your setup code here, to run once:
 pinMode(4,OUTPUT);
}

void loop() {
// put your main code here, to run repeatedly:
delayme(200);
onoff=!onoff;
digitalWrite(4,onoff);
}