/*Header
  Writing a code to measure the voltage 
    within an LED-resistor ciruit
    With measured voltage we can use Ohms law (V = IR)
    To calcualte
      voltage drop across any component
      And current through component/circuit
*/

//Global Variable and pin declaration
//pins we are using... are there any? 13

int LEDPin = 13; //power for LED pin is pin 13

// variable for my voltage reading
int VoltReading;

void setup() {
  // put your setup code here, to run once:

  // what pins are being used, and how they are being used
  //LED --> 13 --> actuator or sensor and idgital or analog
  // LED is an actuator --> Write
  pinMode(LEDPin,OUTPUT);

  // if we want to see values --> need to initialize serial monitor
  //we want to serial print (plotter)
  Serial.begin(9600); // always use 9600
}

void loop() {
  // put your main code here, to run repeatedly:

  //turn on LED --> WRITE
  //digital
  digitalWrite(LEDPin, HIGH);
  
  //we want to read our voltage values
  // want an analog
  VoltReading = analogRead(A0);
  //add wire to A0
  // need to display value
  //Serial.print(VoltReading);
  //add text
  //Serial.print(" | ");

  Serial.println(VoltReading);
  delay(100);

  //not meant to replace hardware

}