int ledPin=25;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}
int potValue=0;
int brightValue=0;
void loop() {
  potValue = analogRead(A0);
  brightValue = map(potValue, 0, 1023, 0, 255);
  analogWrite(ledPin, brightValue);
  Serial.println(potValue);
  Serial.println(brightValue);
  delay(1000); 
}