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Author Archives: Al Williams

Redneck Spaceship From Trash

Posted on December 26, 2025 by Al Williams

Facebook Marketplace provides you with a free grain silo, so what do you do with it? If you are [saveifforparts], you mix it with other materials and produce a retro-style …read more Continue reading Redneck Spaceship From Trash→

Posted in movie props, scifi | Tagged Art

Roll Your Own Hall Effect Sensor

Posted on December 24, 2025 by Al Williams

If you read about Hall effect sensors — the usual way to detect and measure magnetic fields these days — it sounds deceptively simple. There’s a metal plate with current …read more Continue reading Roll Your Own Hall Effect Sensor→

Posted in edwin hall, elektor, hall effect, parts, Science, sensor

Using an e-Book Reader as a Secondary Display

Posted on December 23, 2025 by Al Williams

[Alireza Alavi] wanted to use an e-ink tablet as a Linux monitor. Why? We don’t need to ask. You can see the result of connecting an Onyx BOOX Air 2 …read more Continue reading Using an e-Book Reader as a Secondary Display→

Posted in linux, linux hacks, vnc

Improving the Cloud Chamber

Posted on December 20, 2025 by Al Williams

Want to visualize radioactive particles? You don’t need a boatload of lab equipment. Just a cloud chamber. And [Curious Scientist] is showing off an improved miniature cloud chamber that is easy …read more Continue reading Improving the Cloud Chamber→

Posted in classic hacks, cloud chamber, peltier, Science, wilson cloud chamber

The Miracle of Color TV

Posted on December 19, 2025 by Al Williams

We’ve often said that some technological advancements seemed like alien technology for their time. Sometimes we look back and think something would be easy until we realize they didn’t have …read more Continue reading The Miracle of Color TV→

Posted in classic hacks, delay line, ntsc, tv, video hacks

Memory at the Speed of Light

Posted on December 17, 2025 by Al Williams

Look inside a science fiction computer, and you’ll probably see tubes and cubes that emit light. Of course, it’s for effect, but the truth is, people do think light computing …read more Continue reading Memory at the Speed of Light→

Posted in optical computing, Science

Debugging the AMD GPU

Posted on December 16, 2025 by Al Williams

Although Robert F. Kennedy gets the credit for popularizing it, George Bernard Shaw said: “Some men see things as they are and say, ‘Why?’ I dream of things that never …read more Continue reading Debugging the AMD GPU→

Posted in debugging, gpu, software development, software hacks

Magnetic Transformer Secrets

Posted on December 16, 2025 by Al Williams

[Sam Ben-Yaakov] has another lecture online that dives deep into the physics of electronic processes. This time, the subject is magnetic transformers. You probably know that the ratio of current …read more Continue reading Magnetic Transformer Secrets→

Posted in lecture, parts, spice, transformers

A Brief History of the Spreadsheet

Posted on December 15, 2025 by Al Williams

We noted that Excel turned 40 this year. That makes it seem old, and today, if you say “spreadsheet,” there’s a good chance you are talking about an Excel spreadsheet, …read more Continue reading A Brief History of the Spreadsheet→

Posted in computer history, Featured, history, retrocomputing, spreadsheets

Mass Spectrometer Tear Down

Posted on December 15, 2025 by Al Williams

If you have ever thought, “I wish I could have a mass spectrometer at home,” then we aren’t very surprised you are reading Hackaday. [Thomas Scherrer] somehow acquired a broken …read more Continue reading Mass Spectrometer Tear Down→

Posted in laser, laser hacks, mass spec, mass spectrometer, teardown

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