const int ledPin1 = 2;
const int ledPin2 = 4;
const int ledPin3 = 5;
const int potPin = 34;

void setup() {
  // Set the LED pins as outputs
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
}

void loop() {
  // Read the value of the potentiometer
  int potValue = analogRead(34);

  // Map the potentiometer value to a brightness level
  int brightness = map(potValue, 0, 1023, 0, 255);

  // Alternate between the two LEDs every second
  digitalWrite(ledPin1, brightness);
  delay(500);
  digitalWrite(ledPin1, LOW);
  digitalWrite(ledPin2, brightness);
  delay(500);
  digitalWrite(ledPin2, LOW);
  digitalWrite(ledPin3, brightness);
  delay(500);
  digitalWrite(ledPin3, LOW);
}