int pot = 34;
int ledPin = 2;
 
void setup() {
  Serial.begin(115200);
  pinMode(ledPin, OUTPUT);
}
 
void loop() {
  int adc = analogRead(pot);
  int pwm = map(adc, 0, 4095, 0, 255);
  Serial.println("pwm :"+String(pwm));
  analogWrite(ledPin, pwm);
}