Building a Microscope without Lenses
https://hackaday.com/2025/12/04/building-a-microscope-without-lenses/

It’s relatively easy to understand how optical microscopes work at low magnifications: one lens magnifies an image, the next magnifies the already-magnified image, and so on until it reaches the …read more (https://hackaday.com/2025/12/04/building-a-microscope-without-lenses/)

Biogas Production For Surprisingly Little Effort
https://hackaday.com/2025/12/04/biogas-production-for-surprisingly-little-effort/

Probably most people know that when organic matter such as kitchen waste rots, it can produce flammable methane. As a source of free energy it’s attractive, but making a biogas …read more (https://hackaday.com/2025/12/04/biogas-production-for-surprisingly-little-effort/)

Off-Grid, Small-Scale Payment System
https://hackaday.com/2025/12/05/off-grid-small-scale-payment-system/

An effective currency needs to be widely accepted, easy to use, and stable in value. By now most of us have recognized that cryptocurrencies fail at all three things, despite …read more (https://hackaday.com/2025/12/05/off-grid-small-scale-payment-system/)

Warnings About Retrobright Damaging Plastics After 10 Year Test
https://hackaday.com/2025/12/05/warnings-about-retrobright-damaging-plastics-after-10-year-test/

Within the retro computing community there exists a lot of controversy about so-called ‘retrobrighting’, which involves methods that seeks to reverse the yellowing that many plastics suffer over time. While …read more (https://hackaday.com/2025/12/05/warnings-about-retrobright-damaging-plastics-after-10-year-test/)

This Week in Security: React, JSON Formatting, and the Return of Shai Hulud
https://hackaday.com/2025/12/05/this-week-in-security-react-json-formatting-and-the-return-of-shai-hulud/

After a week away recovering from too much turkey and sweet potato casserole, we’re back for more security news! And if you need something to shake you out of that …read more (https://hackaday.com/2025/12/05/this-week-in-security-react-json-formatting-and-the-return-of-shai-hulud/)

Mac System 7 On a G4? Why Not!
https://hackaday.com/2025/12/05/mac-system-7-on-a-g4-why-not/

Over the many years Apple Computer have been in operation, they have made a success of nearly-seamlessly transitioning multiple times between both operating systems and their underlying architecture. There have …read more (https://hackaday.com/2025/12/05/mac-system-7-on-a-g4-why-not/)

Hackaday Podcast Episode 348: 50 Grams of PLA Hold a Ton, Phreaknic Badge is Off The Shelf, and Hackers Need Repair Manuals
https://hackaday.com/2025/12/05/hackaday-podcast-episode-348-50-grams-of-pla-hold-a-ton-phreaknic-badge-is-off-the-shelf-and-hackers-need-repair-manuals/