Gotcha!
Keep those hands off my hard earned pun box quarters!
http://instagram.com/p/ftDKRomZrb/
state change detection:
http://instagram.com/p/fn6rvpoFHq/
debounce!
http://instagram.com/p/fn0pJxoFNV/
digital put pullup
http://instagram.com/p/fnzhqFoFLj/
button state change!