//IrSensModFinal.INO

int OBLED  =  13;                     // Declares to the rest of the code that the onboard LED pin is going to be used
int IrSensor  =  A0;                  // Declares to the rest of the code that Sensor output is connected to Adruino pin A0  
int dwell  =  55;                     // Causes the program to hold on to the current step (delay) befor moving on  

void setup ()                         // This command sets up the Arduino software
{                                     // This bracket marks the start of set up
  pinMode (OBLED, OUTPUT);            // Initializes Arduino pin 13 as an output and happens to be the same as the Arduino board's onboard LED 
  digitalWrite (OBLED, HIGH);         // Keeps the relay off while Arduino is initializing 
  pinMode (IrSensor, INPUT_PULLUP);   // Initializes analog pin "A0" as an input for the sensor module 
}                                     // This bracket marks the end of set up

void loop ()                          // Runs the Arduino software in a never ending loop
{                                     // This bracket marks the start of the loop
  if (digitalRead (IrSensor) == LOW)  // If a pinball is detected, do one of the following two things (May have to be set to "HIGH" depending on Ir module) 
  {                                   // This bracket marks the start of the "if"  statement - The first thing
    digitalWrite (OBLED, HIGH);       // If a pinball is detected, turn the onboard LED ON
      delay (dwell);                  // Keeps the output pin #13 (and the associated onboard LED) at a HIGH / ON state for the determined duration 
  }                                   // This bracket marks the end of the "if"  statement
  else                                // If a pinball is not detected, keep the onboard LED OFF
  {                                   // This bracket marks the start of the "else" statement - The second thing
    digitalWrite (OBLED, LOW);        // This command keeps the onboard LED off
  }                                   // This bracket marks the end of the "else" statement   
}                                     // This bracket marks the end of the loopvoid setup()