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

void loop() 
{
  int AN0 = analogRead(A1);
  float V = AN0*5.0/1023;
  float 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);
}
}