Adding Tech to a Z3 - Part 2

I've made some major changes to my in-car tech project, so I thought it was time for an update.  Once again, you'll need to click the link to get to the pdf if you want to read the whole thing, but here's the first paragraph:

"When I did the previous post about my car dock project (which I’m now calling a “Digital Dashboard”) I wrote: “This is probably not an optimal solution and I’m sure I’ll be tweaking it over time…”  I know myself pretty well, so that wasn’t exactly going out on a limb: still, even I’m somewhat surprised by how much this project has changed and grown.  I’ve replaced some of the hardware and not only rewritten the software, but have taken it in a completely different direction."

And here's the link to the whole piece:
 Digital Dashboard