check this out: Minibloq
This looks fantastic! I've downloaded it, it seems to work pretty good, I'm definitely going to have to pick up an Arduino or compatible dev board soon.
I love the idea and if it works as good as it seems to, and makes relatively clean code which it seems to then its definitely a very convenient tool.
Its currently in beta and after a few finishing touches are done the source is going to be released.
if anyone is going to download it I suggest downloading via the torrent because their webserver is getting pounded right now due to being featured on hackaday.
use the attached torrent of this link http://burnbit.com/torrent/179802/Minibloq_v0_8_Beta_exe