const int potPin = 34;
const int ledPin = 4;
const int pwmFreq = 5000;
const int pwmResolution = 8;

void setup() {
  Serial.begin(115200);
  ledcAttach(ledPin, pwmFreq, pwmResolution);
}

void loop() {
  int potValue = analogRead(potPin);           // 0–4095
  int pwmValue = map(potValue, 0, 4095, 0, 255); // scale to 8-bit
  ledcWrite(ledPin, pwmValue);

  Serial.print("Pot: ");
  Serial.print(potValue);
  Serial.print(" -> PWM: ");
  Serial.println(pwmValue);

  delay(50);
}