3D Printing A Wire-Wrap Tool: Emergency Fix Or Permanent Solution?

Although less popular these days, wire-wrap is still a very relevant, easily reversible solder-free way to assemble (prototype) systems using wire-wrap wire and a wire-wrap tool. This latter tool c…

Keeping Track Of The Night Sky With Discrete Logic Chips

As hobbies go, stargazing has a pretty low barrier to entry. All you really need is a pair of Mark 1 eyeballs and maybe a little caffeine to help you stay up late enough. Astronomy, on the other ha…

Wiring Harness? That’s A Wrap!

[Mr Innovative] likes to keep his wire harnesses tidy, but it is a pain to neatly wrap cables. So, he automated the process using a combination of milled acrylic and 3D printing. We hope the design…

Retrotechtacular: Building The First Computers For Banking

If you’ve ever wondered where the term “banker’s hours” came from, look back to the booming post-war economy of 1950s America. That’s when banks were deluged with so m…

PERSEUS-9, The Dual-6502 Portable Machine That Should Have Been

A question: does anyone who was around in the early days of the 8-bit computer revolution remember a dual-CPU 6502 portable machine like this one? Or just a dual-CPU machine? Or even just a reasona…