// Pin setup
int pot1 = A0;         // Potentiometer 1 (RGB + passive buzzer control)
int pot2 = A1;         // Potentiometer 2 (Active buzzer control)
int R = 11;             // RGB Red
int G = 9;             // RGB Green
int B = 10;             // RGB Blue
int passiveBuzzer = 6; // Passive buzzer pin
int activeBuzzer = 5; // Active buzzer pin

// Variables
int lastColorIndex = -1;

void setup() {
  pinMode(R, OUTPUT);
  pinMode(G, OUTPUT);
  pinMode(B, OUTPUT);
  pinMode(passiveBuzzer, OUTPUT);
  pinMode(activeBuzzer, OUTPUT);
}

// Function to set RGB color
void setColor(int r, int g, int b) {
  analogWrite(R, r);
  analogWrite(G, g);
  analogWrite(B, b);
}

void loop() {
  // ----- Potentiometer 1: RGB + passive buzzer -----
  int val1 = analogRead(pot1);
  int colorIndex = map(val1, 0, 1023, 0, 4); // 5 color zones (0–4)

  if (colorIndex != lastColorIndex) {
    lastColorIndex = colorIndex;
    switch (colorIndex) {
      case 0: setColor(255, 0, 0); tone(passiveBuzzer, 262, 200); break; // Red + C4
      case 1: setColor(0, 255, 0); tone(passiveBuzzer, 294, 200); break; // Green + D4
      case 2: setColor(0, 0, 255); tone(passiveBuzzer, 330, 200); break; // Blue + E4
      case 3: setColor(255, 255, 0); tone(passiveBuzzer, 349, 200); break; // Yellow + F4
      case 4: setColor(255, 0, 255); tone(passiveBuzzer, 392, 200); break; // Magenta + G4
    }
  }

  // ----- Potentiometer 2: Active buzzer -----
  int val2 = analogRead(pot2);
  int toneIndex = map(val2, 0, 1023, 0, 4); // 5 tones

  switch (toneIndex) {
    case 0: digitalWrite(activeBuzzer, HIGH); delay(50); digitalWrite(activeBuzzer, LOW); break;
    case 1: tone(activeBuzzer, 440, 100); break; // A4
    case 2: tone(activeBuzzer, 494, 100); break; // B4
    case 3: tone(activeBuzzer, 523, 100); break; // C5
    case 4: tone(activeBuzzer, 587, 100); break; // D5
  }

  delay(50);
}