Just about every “getting started with microcontrollers” kit, Arduino or otherwise, includes an ultrasonic distance sensor module. Given the power of microcontrollers these days, it was only a matter of …read more (https://hackaday.com/2025/11/16/the-simplest-ultrasound-sensor-module-minus-the-module/)

Hackaday Links: November 16, 2025
https://hackaday.com/2025/11/16/hackaday-links-november-16-2025/

We make no claims to be an expert on anything, but we do know that rule number one of working with big, expensive, mission-critical equipment is: Don’t break the big, …read more (https://hackaday.com/2025/11/16/hackaday-links-november-16-2025/)

Supersized Calculator Brings the Whole Intel 4000 Gang Together
https://hackaday.com/2025/11/16/supersized-calculator-brings-the-whole-intel-4000-gang-together/

The museum-quality hack. Three 4003 shift registers are on the left, with a 4001 ROM above the 4004 CPU in the center, flanked by three 4002 RAM “chips” on the right. Photo by [Klaus Scheffler].
" data-medium-file="https://hackaday.com/wp-content/uploads/2025/11/enter-museum-preview.jpg?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/11/enter-museum-preview.jpg?w=800">Though mobile devices and Apple Silicon have seen ARM-64 explode across the world, there’s still decent odds you’re reading this on a device with an x86 processor — the direct …read more (https://hackaday.com/2025/11/16/supersized-calculator-brings-the-whole-intel-4000-gang-together/)

An Introduction to DC Motor Technology
https://hackaday.com/2025/11/16/an-introduction-to-dc-motor-technology/

[Thinking Techie] takes us back to basics in a recent video explaining how magnets, coils, brushed DC motors, and brushless DC motors work. If this is on your “to learn” …read more (https://hackaday.com/2025/11/16/an-introduction-to-dc-motor-technology/)

Reverse Engineering the Miele Diagnostic Interface
https://hackaday.com/2025/11/17/reverse-engineering-the-miele-diagnostic-interface/

Since modern household appliances now have an MCU inside, they often have a diagnostic interface and — sometimes — more. Case in point: Miele washing machines, like the one that …read more (https://hackaday.com/2025/11/17/reverse-engineering-the-miele-diagnostic-interface/)

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/