const int drivePin =  13; // For Arduino
//const int drivePin = 1; // For Digispark_see text
unsigned int driveState = HIGH;
long idleTime = 6000; //OFF TIME_see text
long activeTime = 3000; //ON TIME_see text
unsigned long previousMillis = 0;

void setup() {
  pinMode(drivePin, OUTPUT);
  driveState = HIGH;
  digitalWrite(drivePin, HIGH);
}

void loop() {
  long currentMillis = millis();
  if ((driveState == LOW) && (currentMillis - previousMillis >= idleTime))
  {
    driveState = HIGH;
    previousMillis = currentMillis;
    digitalWrite(drivePin, HIGH);
  }
  else if ((driveState == HIGH) && (currentMillis - previousMillis >= activeTime))
  {
    driveState = LOW;
    previousMillis = currentMillis;
    digitalWrite(drivePin, LOW);
  }
}