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Author Archives: Al Williams

BASIC on a Calculator Again

Posted on January 20, 2026 by Al Williams

We are always amused that we can run emulations or virtual copies of yesterday’s computers on our modern computers. In fact, there is so much power at your command now …read more Continue reading BASIC on a Calculator Again→

Posted in basic, calculator, hp prime, retrocomputing, software development, software hacks

Robot Sees Light with No CPU

Posted on January 20, 2026 by Al Williams

If you ever built a line following robot, you’ll be nostalgic about [Jeremy’s] light-seeking robot. It is a very simple build since there is no CPU and, therefore, also no …read more Continue reading Robot Sees Light with No CPU→

Posted in CdS cell, classic hacks, ldr, light dependent resistor, robot, robots hacks

The Random Laser

Posted on January 15, 2026 by Al Williams

When we first heard the term “random laser,” we did a double-take. After all, most ordinary sources of light are random. One defining characteristic of a traditional laser is that …read more Continue reading The Random Laser→

Posted in Hackaday Columns, laser, laser hacks, random laser

Windows? Linux? Browser? Same Executable

Posted on January 15, 2026 by Al Williams

We’ve been aware of projects like Cosmopolitan that allow you to crank out a single executable that will run on different operating systems. [Kamila] noticed that the idea was sound, …read more Continue reading Windows? Linux? Browser? Same Executable→

Posted in APE, cosmopolitan, cross platform software, software hacks

Philips Kid’s Kit Revisited

Posted on January 15, 2026 by Al Williams

[Anthony Francis-Jones], like us, has a soft spot for the educational electronic kits from days gone by. In a recent video you can see below, he shows the insides of …read more Continue reading Philips Kid’s Kit Revisited→

Posted in classic hacks, Philips Electronic Engineer EE8 Kit, reflex receiver | Tagged Philips

Clone Wars: IBM Edition

Posted on January 14, 2026 by Al Williams

If you search the Internet for “Clone Wars,” you’ll get a lot of Star Wars-related pages. But the original Clone Wars took place a long time ago in a galaxy …read more Continue reading Clone Wars: IBM Edition→

Posted in bios, Featured, history, IBM, Original Art, pc, PC Clone, retrocomputing

Ask Hackaday: Do You Curb Shop Components?

Posted on January 13, 2026 by Al Williams

I’m not proud. When many of us were kids, we were unabashedly excited when trash day came around because sometimes you’d find an old radio or — jackpot — an …read more Continue reading Ask Hackaday: Do You Curb Shop Components?→

Posted in Ask Hackaday, dumpster diving, garbage, junk box, rants

Electronic Nose Sniffs out Mold

Posted on January 13, 2026 by Al Williams

It turns out, that mold is everywhere. The problem is when it becomes too much, as mold infestations can have serious health effects on both humans and animals. Remediation is …read more Continue reading Electronic Nose Sniffs out Mold→

Posted in mold, Science, sensor fusion | Tagged Electronic Nose

Michelson Interferometer Comes Home Cheap

Posted on January 12, 2026 by Al Williams

We suspect there are three kinds of people in the world. People who have access to a Michelson Interferometer and are glad, those who don’t have one and don’t know …read more Continue reading Michelson Interferometer Comes Home Cheap→

Posted in 3d Printer hacks, laser hacks, Michelson interferometer, Science

Design of Common Emitter Amplifier

Posted on January 12, 2026 by Al Williams

It used to be a rite of passage to be able to do the math necessary to design various bipolar transistor amplifier configurations. This doesn’t come up as often as …read more Continue reading Design of Common Emitter Amplifier→

Posted in bipolar, bipolar junction transistor, classic hacks, common emitter

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