/*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 variables 
//voltage reading variable 
int voltreading; //currently no value 
//in voltreading = 0; would be the equivalent to line 10 
//using '=' assigns value to variable 

//pin decleration 
int ledpin = 8;


void setup() {
  // put your setup code here, to run once:
  //need to enable our pins 
  //LED pin --> power out --> actuator --> digital 
  pinMode(ledpin, OUTPUT);

  //how to view values 
  //view values through serial moderator and serial plotter 
  Serial.begin(9600); //starts serial monitoring always set 9600 
}

void loop() {
  // put your main code here, to run repeatedly:
  //run power through led 
  //outputs are digital 
  digitalWrite(ledpin, HIGH);
  //HIGH = 1 ON
  //LOW = 0 OFF

  //measure voltage --> collect values 
  //sensor READ --> analog signal 
  voltreading = analogRead(A0);
  //display values of interest 
  //Serial.print(voltreading);
  //To improve readability ass text 
  //Serial.print(" | ");

  Serial.println(voltreading);
  //easiest way to read voltage ^^
  //wokwi does not simulate current 


  delay(100);
  //delays are in miliseconds 
}