/*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 Var and pin designation

int LEDPIN = 13;

int Voltreading;


void setup() {
  // put your setup code here, to run once:
pinMode(LEDPIN, OUTPUT);
Serial.begin(9600);

}

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

digitalWrite(LEDPIN, HIGH);

Voltreading = analogRead(A0);

Serial.print(Voltreading);

Serial.print(" | ");

delay(100);

}