int potVal;
int dur = 500;
int potPin = A0;
int pin = 7;

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(potPin, INPUT);
pinMode(pin, OUTPUT);
}

void loop() {
  potVal = analogRead(potPin);
  Serial.println(potVal);
  delay(dur);

  while(potVal > 1000){
    digitalWrite(pin, HIGH);
    potVal = analogRead(potPin);
    Serial.println(potVal);
    delay(dur);
  }

  digitalWrite(pin, LOW);

}