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Author Archives: Al Williams

Tentacle Robot Is Like an Elephant Trunk

Posted on July 6, 2023 by Al Williams

It sounds like bad science fiction or anime, but researchers are creating helical-artificial fibrous muscle structured tubular soft actuators. What? Oh, tentacle robot arms. Got it. The researchers at Westlake …read more Continue reading Tentacle Robot Is Like an Elephant Trunk→

Posted in robots hacks, soft robot, tentacle

FreeCAD is Simple, According to This Tutorial

Posted on July 6, 2023 by Al Williams

Remember learning to tie your shoes or ride a bike? Like many things, that’s easy once you know how to do it, but seems impossible before you learn. [NovaSpirit] asserts …read more Continue reading FreeCAD is Simple, According to This Tutorial→

Posted in 3d Printer hacks, CAD, freecad, parametric design

A Fuse is Just a Fuse, Right?

Posted on July 5, 2023 by Al Williams

We like to think that most common electronic components are essentially commodity items. We don´t buy premium wire or resistors. You just assume these electronic components are more or less …read more Continue reading A Fuse is Just a Fuse, Right?→

Posted in fuse, parts

Cheap Ham Radio Improves the Low End UI If Not the RF

Posted on July 5, 2023 by Al Williams

There was a time when buying a new radio was something many hams could never afford to do. Then came the super cheap — and super controversial — VHF and …read more Continue reading Cheap Ham Radio Improves the Low End UI If Not the RF→

Posted in ham radio, radio hacks, Reviews, talkpod

Windows 10 the Hard Way: on a Phone

Posted on July 4, 2023 by Al Williams

Sure, there are — or were — Windows phones. But [neozed] wanted something different. An earlier project ran Windows 10 on the Raspberry Pi 4 with some tricks, but those …read more Continue reading Windows 10 the Hard Way: on a Phone→

Posted in cell phone, phone hacks, Windows

Pratt Parsing for Algebraic Expressions

Posted on July 4, 2023 by Al Williams

Parsing algebraic expressions is always a pain. If you need to compute, say, 2+4*2, the answer should be the same as (2 + (4 *2)), not ((2 + 4) * …read more Continue reading Pratt Parsing for Algebraic Expressions→

Posted in algebraic computation, parser, pratt parser, software development

The Chess Computer from 1912

Posted on July 3, 2023 by Al Williams

Who was [Leonardo Torres Quevedo]? Not exactly a household name, but as [IEEE Spectrum] points out, he invented a chess automaton in 1920 that would foreshadow the next century’s obsession …read more Continue reading The Chess Computer from 1912→

Posted in automaton, chess, chess computer, classic hacks, mechanical

Freq Out with LTSpice

Posted on July 3, 2023 by Al Williams

We always enjoy [FesZ’s] videos, and his latest about FREQ function in LTSpice is no exception. In fact, LTSpice doesn’t document it, but it is part of the underlying Spice …read more Continue reading Freq Out with LTSpice→

Posted in analog, LTSpice, simulation, software hacks, spice, tool hacks

Vintage Computer Festival Southwest: Bil and Al’s Excellent Adventure

Posted on June 30, 2023 by Al Williams

There was a time when seeing an actual computer was a big deal. They were in air-conditioned rooms with raised floors and locked doors. Even at a university, you were …read more Continue reading Vintage Computer Festival Southwest: Bil and Al’s Excellent Adventure→

Posted in cons, retrocomputing, VCF, Vintage Computer Festival

Demo Relativity for a C-Note

Posted on June 29, 2023 by Al Williams

If you are a science fiction fan, you probably hate the theory of relativity. After all, how can the Enterprise get to a new star system every week if you …read more Continue reading Demo Relativity for a C-Note→

Posted in cloud chamber, muon, Science | Tagged relativity

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