Hacking the Airfresher for a bathroom fan

OK this looks a bit lame, but its self contained.  The author took an airfresher, arduino, and a few other parts and basically made a bathroom fan that would turn on when the humidity hit a certain level.  Clever hack if you have the parts.  If you already have a bathroom vent fan, you can get a humity switch for them for around $50..

http://hackaday.com/2013/10/06/humidity-activated-bathroom-fan/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29