Edit: well that didn't work. URL changed back from http://johan.kanflo.com/the-aaduino/.
(We detached this subthread from https://news.ycombinator.com/item?id=11538219 and marked it well off-topic.)
> Error establishing a database connection
I'm never sure quite what to do in this situation. It depends on what the author would want.
Maybe a web archive link? You are always on top of things dang!