#define led 2 
#define pot 0 

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(led, OUTPUT);
  pinMode(pot,INPUT);

}

void loop() {
  int potvalue= analogRead(pot);
  int x = map(potvalue,0,4095,0,255);
  analogWrite(led,x);
  delay(200);
  
}