int counter;
unsigned long past1;

void setup() {

pinMode(2, INPUT);
pinMode(4, INPUT_PULLUP);
pinMode(6, OUTPUT);

Serial.begin(9600);
Serial.println("BEGIN");
Serial.println();


}

void loop() {

Serial.println(counter);

if (millis() > past1 + 1000) {
  counter++;
  past1 = millis();
}

if (digitalRead(2) == HIGH) {
  counter = 0;
}

if (counter > 5) {
  digitalWrite(6, HIGH);
}

if (digitalRead(4) == LOW) {
  digitalWrite(6, LOW);
  counter = 0;
}

}