#define LED_PIN 3
#define LED1_PIN 5
#define LED2_PIN 6
#define LED3_PIN 9
#define LED4_PIN 10
#define LED5_PIN 11
#define POTENTIOMETER_PIN A1

void setup()

{

  pinMode(LED_PIN, OUTPUT);
  pinMode(LED1_PIN, OUTPUT);
  pinMode(LED2_PIN, OUTPUT);
  pinMode(LED3_PIN, OUTPUT);
  pinMode(LED4_PIN, OUTPUT);
  pinMode(LED5_PIN, OUTPUT);
  pinMode(POTENTIOMETER_PIN, INPUT);

}

void loop()

{

  int potentiometerValue = analogRead(POTENTIOMETER_PIN); 
  int brightness = potentiometerValue / 4;
  analogWrite(LED_PIN, brightness);
  analogWrite(LED1_PIN, brightness);
  analogWrite(LED2_PIN, brightness);
  analogWrite(LED3_PIN, brightness);
  analogWrite(LED4_PIN, brightness);
  analogWrite(LED5_PIN, brightness);
  
}