// Define pin numbers
int led = 17;         // LED is connected to GPIO 17 on the ESP32
int pot_pin = 35;     // Potentiometer is connected to GPIO 35 (analog pin on ESP32)
int pot_value = 0;    // Variable to store the analog value read from the potentiometer

void setup() {
  // Initialize the LED pin as an output pin
  pinMode(led, OUTPUT);
  
  // Start the serial communication to send data to the Serial Monitor
  Serial.begin(9600);  // Set baud rate to 9600 for serial communication
}

void loop() {
  // Read the analog value from the potentiometer (range: 0 to 4095 for ESP32)
  pot_value = analogRead(pot_pin);
  
  // Map the potentiometer value (0 to 4095) to a brightness value (0 to 255)
  // 4055 is used instead of 4095 to avoid any noise at the upper range
  int brightness = map(pot_value, 0, 4055, 0, 255);

  // Set the brightness of the LED based on the potentiometer value
  analogWrite(led, brightness);  // Control the LED brightness

  // Print the potentiometer value to the Serial Monitor for debugging
  Serial.print("POT Value: ");
  Serial.println(pot_value);  // Display the raw potentiometer value
  
  // Print the mapped brightness value to the Serial Monitor for debugging
  Serial.print("Brightness: ");
  Serial.println(brightness);  // Display the brightness value
  
  // Wait for 1 second before repeating the loop
  delay(1000);  // 1-second delay between readings
}