#define potent_pin A5
#define led_pin 5
int potent_value;
int current_value;

void setup() {
  Serial.begin(9600);

}

void loop() {
  potent_value = analogRead(potent_pin);
  potent_value = map(potent_value, 0, 1023, 0, 255);
  potent_value = constrain(potent_value, 0, 255);
  if (current_value != potent_value) {
    Serial.println(potent_value);
    current_value = potent_value;
    analogWrite(led_pin, potent_value);
    delay(30);
  }
}