BatteryStatusSerial.ino

//
// BatteryStatusSerial
//
// A simple test script that prints the battery pack voltage to the
// serial monitor on your computer.
//
//  NOTES: 
//    1 - this is the table of actual voltage and sensor readings
//
//  Battery Voltage | sensorValue
//        4.7       |      773
//        3.2       |      578
//        1.6       |      320
//        0         |      0

// run once, when the sketch starts
void setup()            
{
  // setup Serial library at 9600 bps
  Serial.begin(9600);
}

// run over and over again
void loop() 
{
  // read battery sensor value and map it to 0-5 volts
  int sensorValue = analogRead(BATTERY);  // read battery value
  int mappedSensorValue = map(sensorValue, 0, 800, 0, 5);

  // Print battery value out
  Serial.print("Battery reads: ");
  Serial.print(mappedSensorValue);
  Serial.print(" Volts (");
  Serial.print(sensorValue);
  Serial.println(")");
}