+//  This example is Chibitronics Love to Code tested!
 /*
   Button
  
- Turns on and off a light emitting diode(LED) connected to digital  
- pin 13, when pressing a pushbutton attached to pin 2. 
+ Turns on and off a light emitting diode(LED) connected to
+ pin A2, when pressing a pushbutton attached to pin A3. 
  
  
  The circuit:
- * LED attached from pin 13 to ground 
- * pushbutton attached to pin 2 from +5V
- * 10K resistor attached to pin 2 from ground
- 
- * Note: on most Arduinos there is already an LED on the board
- attached to pin 13.
- 
+ * LED attached from pin A2 to ground
+ * pushbutton attached to pin A3 from ground
+ * on chibitronics boards, A3 can be configured to have an intenal pull-up
  
  created 2005
  by DojoDave <http://www.0j0.org>
  modified 30 Aug 2011
  by Tom Igoe
- 
+ modified 25 May 2016
+ by chibitronics
+
  This example code is in the public domain.
  
  http://www.arduino.cc/en/Tutorial/Button

  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed.
  // if it is, the buttonState is HIGH:
  if (buttonState == HIGH) {     
    // turn LED on:    
    digitalWrite(ledPin, HIGH);  
  } 

  // initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);      
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT_PULLUP);     
}

void loop(){
