Track Your Circuits: A Locomotive PCB Badge
https://hackaday.com/2025/04/18/track-your-circuits-a-locomotive-pcb-badge/

This fun PCB from [Nick Brown] features a miniature railroad implemented with 0805-sized LEDs. With an eye towards designing his own fun interactive PCB badge, the Light-Rail began its journey. …read more (https://hackaday.com/2025/04/18/track-your-circuits-a-locomotive-pcb-badge/)

D20-shaped Quasicrystal Makes High-Strength Alloy Printable
https://hackaday.com/2025/04/18/d20-shaped-quasicrystal-makes-high-strength-alloy-printable/

When is a crystal not a crystal? When it’s a quasi-crystal, a paradoxical form of metal recently found in some 3D printed metal alloys by [A.D. Iams et al] at …read more (https://hackaday.com/2025/04/18/d20-shaped-quasicrystal-makes-high-strength-alloy-printable/)

This Week in Security: No More CVEs, 4chan, and Recall Returns
https://hackaday.com/2025/04/18/this-week-in-security-no-more-cves-4chan-and-recall-returns/

The sky is falling. Or more specifically, it was about to fall, according to the security community this week. The MITRE Corporation came within a hair’s breadth of running out …read more (https://hackaday.com/2025/04/18/this-week-in-security-no-more-cves-4chan-and-recall-returns/)

Presence Detection Augments 1930s Home
https://hackaday.com/2025/04/18/presence-detection-augments-1930s-home/

It can be jarring to see various sensors, smart switches, cameras, and other technology in a house built in the 1930s, like [Chris]’s was. But he still wanted presence detection …read more (https://hackaday.com/2025/04/18/presence-detection-augments-1930s-home/)

Hackaday Podcast Episode 317: Quantum Diamonds, Citizen Science, and Cobol to AI
https://hackaday.com/2025/04/18/hackaday-podcast-episode-317-quantum-diamonds-citizen-science-and-cobol-to-ai/

When Hackaday editors Elliot Williams and Al Williams need a break from writing posts, they hop on the podcast and talk about their favorite stories of the past week. Want …read more (https://hackaday.com/2025/04/18/hackaday-podcast-episode-317-quantum-diamonds-citizen-science-and-cobol-to-ai/)

Vintage Game Rides Again Thanks to Modern Tech
https://hackaday.com/2025/04/18/vintage-game-rides-again-thanks-to-modern-tech/

You have to admire the lengths designers went to back in the day to create engaging games and toys. One particularly clever game of this type was called GEE-WIZ, a …read more (https://hackaday.com/2025/04/18/vintage-game-rides-again-thanks-to-modern-tech/)

A Pi-Based LiDAR Scanner
https://hackaday.com/2025/04/18/a-pi-based-lidar-scanner/