Retro

Mechanical Image Duplicator

Mechanical Image Duplicator

Before Chester Carlson invented photocopying, inventors engineered various mechanical devices to replicate images. With a few everyday items found in the home, you can make a pantograph, an image duplicator...

Posted by Cy Tymony

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The Wimshurst Influence Machine

The Wimshurst Influence Machine

When assembling a proper laboratory, the gentleman or lady experimenter should be sure to include a Wimshurst electrostatic generating machine. This device will serve tirelessly in investigations into the field...

Posted by Jake von Slatt

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Infinity Light

Infinity Light

Convert your DC motor into a dynamo and use it to generate light without batteries. All you need is some capacitors, a DC motor, diode, wire, gear system and LED....

Posted by Gerhard de la Mora

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Gun-Operated Alarm Clock

Gun-Operated Alarm Clock

Clock radios are everyday hated devices that designers seem to ignore, judging by how little their features and user interfaces have changed. This project adds a new capability, letting would-be...

Posted by Roger Ibars

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Marble Adding Machine

Marble Adding Machine

Computers add binary numbers constantly, but we never see how. This elegant machine does the math using glass marbles. I started building marble track machines years ago using Lego. I...

Posted by Matthias Wandel

Categories: Electronics, Woodworking | No Comments


The Autophenakistoscope

The Autophenakistoscope

Motorize a phenakistoscope, a 19th-century parlor novelty that preceded motion pictures, and keep its frames synched to an LED strobe by using a sensor and an Arduino microcontroller. Invented in...

Posted by Dan Rasmussen

Categories: Arduino, Electronics | No Comments


Circuit Skills:     LED Color Organ

Circuit Skills: LED Color Organ

Long before the dawn of digital music, folks employed the power of the electric color organ (aka “light organ”) to add some synced visuals to their hi-fi experience. Schematics for...

Posted by Mark de Vinck

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Circuit Skills: LED Matrix

Circuit Skills: LED Matrix

Many an experimenter, hacker, tinkerer, & maker have heeded the call of the mighty matrix – and it’s no mystery why. A small army of LEDs elegantly wired in grid...

Posted by Mark de Vinck

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Build a Gakken Edo-Style Clock

Build a Gakken Edo-Style Clock

The kit comes with illustrated instructions that are fairly easy to follow. However, there are a few tips and tricks that this guide will cover, making the build process really...

Posted by Marc de Vinck

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Build a Monochron Clock Kit

Build a Monochron Clock Kit

You’ll need some basic soldering & hand tools to assemble the Monochron. The good news is that this is a pretty basic kit and even if it’s your first soldering...

Posted by Mark de Vinck

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