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

int VRvalue;

void setup()
{
  // Initialize serial port
  Serial.begin(115200);

  // Set pins
  pinMode(LED_Out_Pin, OUTPUT);
  pinMode(SW_In_Pin, INPUT_PULLUP);
}

void loop()
{
  // Reading
  VRvalue = analogRead(VR_In_Pin);

  // Display
  Serial.print("Raw Sensor reading: ");
  Serial.print(VRvalue);
  VRvalue = map(VRvalue, 0, 4095, 0, 100);  // scale it
  Serial.print("\tScaled Sensor reading: ");
  Serial.println(VRvalue);
 if (VRvalue >99)
 {
  digitalWrite(LED_Out_Pin, HIGH);
  delay(100);
  digitalWrite(LED_Out_Pin, LOW);
  delay(100); 
 }
  if (VRvalue <1)
 {
  digitalWrite(LED_Out_Pin, HIGH);
  delay(500);
  digitalWrite(LED_Out_Pin, LOW);
  delay(500); 
 }
 
}