int LipoType = 0;
float LowVoltage = 0;
int analogInput = 0;
float vout = 0.0;
float vin = 0.0;
float R1 = 100000.0; // resistance of R1 (100K) -see text!
float R2 = 10000.0; // resistance of R2 (10K) - see text!
int value = 0;

void setup(){
   pinMode(analogInput, INPUT);
   Serial.begin(9600);     //  opens serial port, sets data rate to 9600 bps
   Serial.print("Arduino Digital Voltmeter for ZEO OSD");
   Serial.println();
   value = analogRead(analogInput);
   vout = (value * 5.0) / 1024.0; // see text
   vin = vout / (R2/(R1+R2));
   if (vin<0.09) {
   vin=0.0;//statement to quash undesired reading !
   }
   if (vin >13)
   {
   LipoType = 4;
  }
  else if (vin >10)
  {
   LipoType = 3;
  }
  else if (vin >6)
  {
   LipoType = 2;
  }
  else if (vin >2)
  {
   LipoType =1;
  }
   }

void loop(){
   // read the value at analog input
   value = analogRead(analogInput);
   vout = (value * 5.0) / 1024.0; // see text
   vin = vout / (R2/(R1+R2));
   if (vin<0.09) {
   vin=0.0;//statement to quash undesired reading !
}
if (LipoType = 4)
{
  LowVoltage= vin/4;
}
else if (LipoType = 3)
{
  LowVoltage= vin/3;
}
else if (LipoType = 2)
{
  LowVoltage= vin/2;
}
else if (LipoType= 1)
{
  LowVoltage= vin;
}
Serial.print("INPUT V= ");
Serial.print(vin);
Serial.println();
Serial.print(LipoType);
Serial.print("S");
Serial.println();
Serial.print(LowVoltage);
if (LowVoltage <= 3.6) Serial.print("LOW BATTERY:");
Serial.println();
delay(100);

}