// ESP32 LED Blink with Potentiometer Speed Control
const int ledPin = 13;     // Built-in LED (or use any GPIO)
const int potPin = 34;     // Potentiometer connected to GPIO34 (ADC1_CH6)

void setup() {
  pinMode(ledPin, OUTPUT);  // Set LED pin as output
  // No need to set analog pinMode for input - it's default
  Serial.begin(115200);     // Start serial communication
}

void loop() {
  // Read potentiometer value (0-4095)
  int potValue = analogRead(potPin);
  
  // Map to delay range (20ms - 2000ms = 2 seconds)
  int delayTime = map(potValue, 0, 4095, 100, 2000);
  
  // Blink sequence
  digitalWrite(ledPin, HIGH);
  delay(delayTime);
  digitalWrite(ledPin, LOW);
  delay(delayTime);
  
  // Optional serial monitoring (remove if not needed)
  Serial.print("Pot Value: ");
  Serial.print(potValue);
  Serial.print(" | Delay: ");
  Serial.print(delayTime);
  Serial.println(" ms");
}