I guess, everyone involved here has at some point dreamed of building a relay computer. Paul Law is no exception, with the minor difference of having actually done it. The machine is based on a design by Dr. Harry Porter at Portland State University, but implemented using his own methods. – And it’s a thing of beauty, for sure. Moreover, Paul Law has compiled an impressive website documenting the project in detail (including an online-emulator of his relay computer), and there’s also a YouTube channel with lots of videos covering the progress.
Best start at the overview page of the website, which explains the machine in a few videos:
https://relaycomputer.co.uk/pages/overview.html
And then head for the home page for more content.
And here’s the related YouTube channel: https://www.youtube.com/user/paul80nd
Via HN, Constructing an 8-bit relay computer from scratch | Hacker News