#define POTENTIOMETER A3
#define LED 01

int scale;
unsigned long last = 0;
unsigned long curr;

void setup() {
  pinMode(LED, OUTPUT);
}

void loop() {
  scale = analogRead(POTENTIOMETER);
  curr = millis();
  if (curr - last >= scale){
    last = curr;
    digitalWrite(LED, !digitalRead(LED));
  }
}