[Robert Morrison] had an ancient HP 545A logic probe, which was great for debugging SMT projects. The only problem was that being 45 years old, it wasn’t quite up to …read more (https://hackaday.com/2025/07/18/2025-one-hertz-challenge-hp-logic-probe-brought-into-the-future/)

Time, Stars, and Tides, All On Your Wrist
https://hackaday.com/2025/07/18/time-stars-and-tides-all-on-your-wrist/

When asked ‘what makes you tick?’ the engineers at Vacheron Constantin sure know what to answer – and fast, too. Less than a year after last year’s horological kettlebell, the …read more (https://hackaday.com/2025/07/18/time-stars-and-tides-all-on-your-wrist/)

PVCSub: A Submarine from the Plumbing Aisle
https://hackaday.com/2025/07/18/pvcsub-a-submarine-from-the-plumbing-aisle/

Today in the submersibles department our hacker [Rupin Chheda] wrote in to tell us about their submarine project. This sub is made from a few lengths of PVC piping of …read more (https://hackaday.com/2025/07/18/pvcsub-a-submarine-from-the-plumbing-aisle/)

Before Macintosh: The Story of the Apple Lisa
https://hackaday.com/2025/07/18/before-macintosh-the-story-of-the-apple-lisa/

Film maker [David Greelish] wrote in to let us know about his recent documentary: Before Macintosh: The Apple Lisa. The documentary covers the life of the Apple Lisa. It starts …read more (https://hackaday.com/2025/07/18/before-macintosh-the-story-of-the-apple-lisa/)

2025 One-Hertz Challenge: ZX Spectrum Is Now A Z80 Frequency Counter
https://hackaday.com/2025/07/18/2025-one-hertz-challenge-zx-spectrum-is-now-a-z80-frequency-counter/

The ZX Spectrum is perhaps most fondly remembered as a home computer and a games machine. [Tito] has grabbed the faithful black plastic box and turned it into a frequency …read more (https://hackaday.com/2025/07/18/2025-one-hertz-challenge-zx-spectrum-is-now-a-z80-frequency-counter/)

GarageMinder: Automatic Garage Door
https://hackaday.com/2025/07/19/garageminder-automatic-garage-door/

After getting a new car, [Solo Pilot] missed the automatic garage door opening and closing system their old car had. So they set about building their own, called GarageMinder. On …read more (https://hackaday.com/2025/07/19/garageminder-automatic-garage-door/)

Neon Lamp Detects Lightning Strikes
https://hackaday.com/2025/07/19/neon-lamp-detects-lightning-strikes/

For as mysterious, fascinating, and beautiful as lightning is at a distance, it’s not exactly a peaceful phenomenon up close. Not many things are built to withstand millions of volts …read more (https://hackaday.com/2025/07/19/neon-lamp-detects-lightning-strikes/)

Elegoo Rapid PETG vs PETG Pro: Same Price, Similar Specs, Which to Buy?
https://hackaday.com/2025/07/19/elegoo-rapid-petg-vs-petg-pro-same-price-similar-specs-which-to-buy/