Folks,
I finally managed to prepare an article on my DIY autofocus project which I discussed in another thread.
'FocusMate' is a set of schematics, drivers and source code which can be used to build and motorise pretty much any half decent focuser. This article is open source as described in the article.
The article can be read here;
webtreatz.com/content/view/63/79/
I will add more to the article as it springs to mind.