This project has been built and is in daily use. Some finishing touches remain to be done.
Below are a serious circuit diagram and detailed notes. Plan on much more than a quick look if you're interested in building this or something similar.
Circuit drawing, as-built
Project circuit notes
(These are .pdf files; you'll need Acrobat or another .pdf reader to view them)
Daox asked if I have pics.
I took a few last weekend, haven't had time yet to get them up to photobucket for sharing.
Hopefully the circuit diagram and notes in links above will be more informative than a handful of pics.