#define LED_Out_Pin 25
#define SW_In_Pin 15
#define VR_In_Pin 36

int VRvalue;

void setup() {
  Serial.begin(115200);

  pinMode(LED_Out_Pin, OUTPUT);
  pinMode(SW_In_Pin, INPUT_PULLUP);
}

void loop() {
  VRvalue = analogRead(VR_In_Pin);
  int ledBrightness = map(VRvalue, 0, 4095, 0, 255);
  analogWrite(LED_Out_Pin, ledBrightness);

  delay(100);
}