For this year’s Hackaday Prize, we’re doing something special. We’re introducing achievements for Prize projects. Think of them as merit badges. If your Hackaday Prize project has multiple parts that ...

Computers built using discrete logic chips? Seen it. Computers from individual transistors? Impressive, but it’s been done. A computer built out of electromechanical relays? Bring on the ozone! The ...

Once you’ve seen this beauty of a relay computer in action, you’ll find it hard to resist the lure of building something similar yourself. Once you’ve seen this beauty of a relay computer in action, ...

Apollo Guidance Computer in his basement. Our new hero is Harry Porter, a wizard from Oregon, who is building a computer the old-fashioned way: by hand, using 415 relays, 111 switches and 350 LEDs ...

As you may recall, one of my current hobby projects involves “Building a 4-Bit Computer from the Ground Up.” I’m working on this project with my chum Joe Farr, who is based in the U.K. In the fullness ...