// LED pins according to your diagram - NOW ALL CONNECTED
const int ledPins[] = {27, 2, 4, 16, 17};
const int numLeds = 5;

// Potentiometer on GPIO33
const int potPin = 33;

void setup() {
  Serial.begin(9600);
  Serial.println("VU Meter Started - All 5 LEDs Connected!");
  
  // Initialize all LED pins
  for(int i = 0; i < numLeds; i++) {
    pinMode(ledPins[i], OUTPUT);
    digitalWrite(ledPins[i], LOW);
  }
}

void loop() {
  // Read potentiometer
  int val = analogRead(potPin);
  
  // Convert to percentage
  int percentage = map(val, 0, 4095, 0, 100);
  
  // Print for debugging
  Serial.print("ADC: ");
  Serial.print(val);
  Serial.print(" | %: ");
  Serial.println(percentage);
  
  // Control ALL 5 LEDs based on percentage
  // LED 1 (GPIO27): 0-20%
  digitalWrite(27, (percentage >= 0) ? HIGH : LOW);
  
  // LED 2 (GPIO2): 21-40%
  digitalWrite(2, (percentage >= 21) ? HIGH : LOW);
  
  // LED 3 (GPIO4): 41-60%
  digitalWrite(4, (percentage >= 41) ? HIGH : LOW);
  
  // LED 4 (GPIO16): 61-80%
  digitalWrite(16, (percentage >= 61) ? HIGH : LOW);
  
  // LED 5 (GPIO17): 81-100%
  digitalWrite(17, (percentage >= 81) ? HIGH : LOW);
  
  delay(100);
}