#include <Arduino.h>

#define POTENTIOMETER_PIN 35
#define LED_PIN 26

void setup() {
  Serial.begin(9600);
  pinMode(LED_PIN, OUTPUT);
}

void loop() {
  int analogValue = analogRead(POTENTIOMETER_PIN);
  int brightness = map(analogValue, 0, 4095, 0, 255);
  analogWrite(LED_PIN, brightness);

  Serial.print("Analog value = ");
  Serial.print(analogValue);
  Serial.print(" => brightness = ");
  Serial.println(brightness);

  delay(100);
}