Repairing radios was easier when radios were simple. There were typically two strategies. You could use a signal tracer (an amplifier) to listen at the volume control. If you heard …read more (https://hackaday.com/2025/07/26/signal-injector-might-still-be-handy/)

2025 One-Hertz Challenge: A Clock Sans Silicon
https://hackaday.com/2025/07/26/2025-one-hertz-challenge-a-clock-sans-silicon/

Just about every electronic device has some silicon semiconductors inside these days—from transistors to diodes to integrated circuits. [Charles] is trying to build a “No-Silicon digital clock” that used none …read more (https://hackaday.com/2025/07/26/2025-one-hertz-challenge-a-clock-sans-silicon/)

Engrave a Cylinder Without a Rotary Attachment? No Problem!
https://hackaday.com/2025/07/26/engrave-a-cylinder-without-a-rotary-attachment-no-problem/

Laser-engraving a cylindrical object usually requires a rotary attachment, which is a motorized holder that rotates a cylindrical object in sync with the engraver. But [Samcraft] shows that engraving all …read more (https://hackaday.com/2025/07/26/engrave-a-cylinder-without-a-rotary-attachment-no-problem/)

Vintage Plasma Display Shows Current Rad Levels
https://hackaday.com/2025/07/26/vintage-plasma-display-shows-current-rad-levels/

It’s hard to argue that Soviet-Era nuclear engineering may have some small flaws, what with the heavily-monitored exclusion zone around Chernobyl No.4. Evidently, their industrial designers were more on-the-ball, because …read more (https://hackaday.com/2025/07/26/vintage-plasma-display-shows-current-rad-levels/)

2025 One-Hertz Challenge: Shadow Clock
https://hackaday.com/2025/07/26/2025-one-hertz-challenge-shadow-clock/

You can buy all kinds of conventional clocks that have hands and numbers for easy reading. Or, like [Fabio Ricci], you could build yourself something a little more esoteric, like …read more (https://hackaday.com/2025/07/26/2025-one-hertz-challenge-shadow-clock/)

A Non-Sony Playstation Motherboard Replacement
https://hackaday.com/2025/07/27/a-non-sony-playstation-motherboard-replacement/

As hardware ages, it becomes harder and harder to keep it in service. Whether that’s because of physical aging or lack of support from the company who built it in …read more (https://hackaday.com/2025/07/27/a-non-sony-playstation-motherboard-replacement/)

A Cable Modem, The Way All Network Gear Should Be Mounted
https://hackaday.com/2025/07/27/a-cable-modem-the-way-all-network-gear-should-be-mounted/

Home routers and cable modems are now extremely powerful devices, but they all suffer from the attention of their manufacturers’ design and marketing departments. Instead of neatly packaging them in …read more (https://hackaday.com/2025/07/27/a-cable-modem-the-way-all-network-gear-should-be-mounted/)

Game Boy Camera in Wedding Photo Booth
https://hackaday.com/2025/07/27/game-boy-camera-in-wedding-photo-booth/