This project, retroactively named Mark I, was built out of salvaged & retired computer parts. The concept worked well enough for me to embark on Mark II, which uses components I purchased for the purpose. After two major revisions I'm pretty confident the idea will pan out... eventually. Several more iterations are still needed before it meets all of my objectives.

The major differences are:

At this point I do not expect to put any more effort into Mark I, though if anybody wants to take the files I've shared here as a basis for their project I'd love to hear about it. 

For the foreseeable future I'll be refining Mark II. The full verbose build blog is here, the "Cliff Notes" version of progress summaries will be posted on the Mark II Hackaday.io project page here.