Although we can already buy commercial transceiver solutions that allow us to use PCIe devices like GPUs outside of a PC, these use an encapsulating protocol like Thunderbolt rather than …read more (https://hackaday.com/2026/04/11/implementing-pcie-over-fiber-using-sfp-modules/)

A Suction-Driven Seven-Segment Display
https://hackaday.com/2026/04/11/a-suction-driven-seven-segment-display/

There’s a long history of devices originally used for communication being made into computers, with relay switching circuits, vacuum tubes, and transistors being some well-known examples. In a smaller way, …read more (https://hackaday.com/2026/04/11/a-suction-driven-seven-segment-display/)

Kiki is the Unknown Array Language
https://hackaday.com/2026/04/11/kiki-is-the-unknown-array-language/

Kiki bills itself as the “array programming system of unknown origin.” We thought it reminded us of APL which, all by itself, isn’t a bad thing. The announcement post is …read more (https://hackaday.com/2026/04/11/kiki-is-the-unknown-array-language/)

Testing Refrigerants and Capillary Tubes to Find Peak Performance
https://hackaday.com/2026/04/11/testing-refrigerants-and-capillary-tubes-to-find-peak-performance/

Although vapor-compression refrigeration is a simple concept, there are still a lot of details in the implementation of such a system that determines exactly how efficient it is. After making …read more (https://hackaday.com/2026/04/11/testing-refrigerants-and-capillary-tubes-to-find-peak-performance/)

Passive Radar Explained
https://hackaday.com/2026/04/12/passive-radar-explained/

It is an old trope in submarine movies. A sonar operator strains to hear things in the ocean but dares not “ping” for fear of giving away the boat’s location. …read more (https://hackaday.com/2026/04/12/passive-radar-explained/)

Making the Forgotten 1982 Game Adventure Canoe run on MAME
https://hackaday.com/2026/04/12/making-the-forgotten-1982-game-adventure-canoe-run-on-mame/

A while back [Jack] came across a Taito arcade game that neither he nor any of his mates recognized. The game was Adventure Canoe and part of the collection of …read more (https://hackaday.com/2026/04/12/making-the-forgotten-1982-game-adventure-canoe-run-on-mame/)

Green Powered Challenge: Solar Powered Pi Hosts Websites in RAM
https://hackaday.com/2026/04/12/green-powered-challenge-solar-powered-pi-hosts-websites-in-ram/

If you started with computers early enough, you’ll remember the importance of the RAMdisk concept: without a hard drive and with floppies slow and swapping constantly, everything had to live …read more (https://hackaday.com/2026/04/12/green-powered-challenge-solar-powered-pi-hosts-websites-in-ram/)

The Complex Transformations Underlying MC Escher’s Works
https://hackaday.com/2026/04/12/the-complex-transformations-underlying-mc-eschers-works/