int LED = 12, POT = 4;
int PotValue, Brightness;
void setup() {
  pinMode(LED,OUTPUT);
  Serial.begin(115200);
}
void loop() {
  PotValue = analogRead(POT);
  Brightness = map(PotValue,0,4095,0,255);
  analogWrite(LED, Brightness);
  Serial.print("ค่าความสว่าง: ");
  Serial.println(Brightness);
  delay(1000);
}