const int potPin = 34; 
const int ledPin = 21; 
bool isRunning = false; 
void setup() {
  Serial.begin(115200);
  pinMode(potPin, INPUT); 
  pinMode(ledPin, OUTPUT); 
}
void loop() {
  int analogValue = analogRead(potPin);
  int brightness = map(analogValue, 0, 4095, 0, 255);
  if (analogValue > 2000) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }
  Serial.print("Raw data: ");
  Serial.print(analogValue);
  Serial.print(" | Mapped data: ");
  Serial.print(brightness);
  Serial.print(" | LED status: ");
  Serial.println(analogValue > 2000 ? "ON" : "OFF");
  delay(100);
}