See <a href="http://www.thingiverse.com/thing:45880,">http://www.thingiverse.com/thing:45880,</a> it looks like an excellent implementation.It includes provision for an Adafruit 1.8 display that I document in <a href="http://21stdigitalhome.blogspot.com/2013/01/esploraadafruit-18-tft-display-works.html">http://21stdigitalhome.blogspot.com/2013/01/esploraadafruit-18-tft-display-works.html</a> and other articles.