int potPin = A0;
int potvalue = 0;
int ledpin = 12;
void setup() {
  // put your setup code here, to run once:
 
 pinMode(ledpin, OUTPUT);
 pinMode(potPin, INPUT);
 Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
potvalue = analogRead(potPin);
Serial.println(potvalue);
digitalWrite(ledpin, HIGH);
delay(potvalue);
digitalWrite(ledpin, LOW);
delay(potvalue); //delay in ms
}