With the various comments and requests for help on the Google+ forum, I've been wondering if a Smoothieboard might not be the way to go. Trouble is, I'm a relative newcomer to 3d printing and a complete ignoramus when it comes to electronics, so I don't even know if the BigBox's PT100 drivers can replace the Smoothieboard's built-in drivers, whether by adding a "shield" or whatever. It seems the firmware can be easily configured, at least compared to the Original Prusa i3 I bought back in December to tide me over till my BigBox Dual arrives. ...some time after all you backers have yours up & running, since I"m a latecomer to the party (pre-ordered in early Nov.) I would welcome any opinions on the subject. Cheers!