int redPin=8;
int potVal;
int readVal=A0;
int delaytime=500;
void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
pinMode(redPin, OUTPUT);
pinMode(potVal, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
potVal=analogRead(readVal);
while(potVal>1000){
  digitalWrite(redPin, HIGH);
  potVal=analogRead(readVal);
}
digitalWrite(redPin, LOW);
}