#define POT_PIN 34

#define RED_PIN 25
#define GREEN_PIN 26
#define BLUE_PIN 27

void setup() {

  Serial.begin(115200);

  ledcAttach(RED_PIN, 5000, 8);
  ledcAttach(GREEN_PIN, 5000, 8);
  ledcAttach(BLUE_PIN, 5000, 8);
}

void setColor(int r, int g, int b){
  ledcWrite(RED_PIN, r);
  ledcWrite(GREEN_PIN, g);
  ledcWrite(BLUE_PIN, b);
}

void loop() {
// Potansiyometreden analog değer okur. 0 – 4095 arası (12 bit ADC)
  int pot = analogRead(POT_PIN);
//0  → pot tamamen sol
//4095 → pot tamamen sağ
  int renk = map(pot,0,4095,0,19);
//map() bir sayıyı başka bir aralığa dönüştürür.
//map(deger, eski_min, eski_max, yeni_min, yeni_max)

  switch(renk){

    case 0: setColor(255,0,0); break;
    case 1: setColor(255,64,0); break;
    case 2: setColor(255,128,0); break;
    case 3: setColor(255,165,0); break;
    case 4: setColor(255,255,0); break;
    case 5: setColor(128,255,0); break;
    case 6: setColor(0,255,0); break;
    case 7: setColor(0,255,128); break;
    case 8: setColor(0,255,255); break;
    case 9: setColor(0,128,255); break;
    case 10: setColor(0,0,255); break;
    case 11: setColor(75,0,130); break;
    case 12: setColor(138,43,226); break;
    case 13: setColor(255,0,255); break;
    case 14: setColor(255,20,147); break;
    case 15: setColor(255,105,180); break;
    case 16: setColor(255,255,255); break;
    case 17: setColor(192,192,192); break;
    case 18: setColor(128,128,128); break;
    case 19: setColor(0,0,0); break;

  }

  Serial.println(pot);

  delay(50);
}