void setup()
{
    Serial.begin(115200);
    pinMode(13,OUTPUT);
}

void loop() 
{
  int AN0 = analogRead(A0);
  float V = AN0*5.0/1023;
  int percent = AN0*100.0/1023;
  Serial.print (V);
  Serial.print (",");
  Serial.print (percent);
  Serial.print (",");
  Serial.println(AN0);
  

    int n,m;
    digitalWrite(13,1);
    for(n=0;n<percent;n++)
    {
      delayMicroseconds(100);
    }
 
    digitalWrite(13,0);
    for(m=percent;m<100;m++)
    {
      delayMicroseconds(100);
    }

}