TMS9900-based Home Brew Computer
https://hackaday.com/2025/11/17/tms9900-based-home-brew-computer/

[Usagi Electric] is known for minicomputers, but in a recent video, he shows off his TMS9900-based homebrew computer. The TMS9900 CPU was an early 16-bit CPU famously used in the old …read more (https://hackaday.com/2025/11/17/tms9900-based-home-brew-computer/)

Tech in Plain Sight: Pneumatic Tubes
https://hackaday.com/2025/11/17/tech-in-plain-sight-pneumatic-tubes/

Today, if you can find a pneumatic tube system at all, it is likely at a bank drive-through. A conversation in the Hackaday bunker revealed something a bit surprising. Apparently, …read more (https://hackaday.com/2025/11/17/tech-in-plain-sight-pneumatic-tubes/)

Watching Radioactive Decay with a Homemade Spinthariscope
https://hackaday.com/2025/11/17/watching-radioactive-decay-with-a-homemade-spinthariscope/

Among the many science toys that have fallen out of fashion since we started getting nervous around things like mercury, chlorinated hydrocarbons, and radiation is the spinthariscope, which let people …read more (https://hackaday.com/2025/11/17/watching-radioactive-decay-with-a-homemade-spinthariscope/)