3D Printing Latex Is Now Possible

For those getting started with 3D printers, thermoplastics such as ABS and PLA are the norm. For those looking to produce parts with some give, materials like Ninjaflex are most commonly chosen, using thermoplastic polyeurethane. Until recently, it hasn’t been possible to 3D print latex rubber. However, a team at …read more

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A Low-Cost Current Probe For IoT Applications

When it comes to the Internet of Things, many devices run off batteries, solar power, or other limited sources of electricity. This means that low power consumption is key to success. However, often these circuits draw relatively small currents that are difficult to measure, with plenty of transient current draw …read more

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MP3 Is 25 Years Old!

In the streaming era, music is accessed from a variety of online services, ephemeral in nature and never living on board the device. However, the online audio revolution really kicked off with the development of one very special format. The subject of bitter raps and groundbreaking lawsuits, this development from …read more

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3D Printed Speaker Uses DSP For Ultimate Performance

Speaker design used to be as much about woodwork as it was about advanced acoustic mathematics. In recent decades, technologies such as digital signal processing and 3D printing have changed the game significantly. Leaning heavily on these techniques, [ssashton] developed a design called Mr. Speaker.

The speaker contains a 3″ …read more

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Simple Plasma Cutter Collision Detection System

Machine tools often have powerful drive motors, allowing them to work quickly and accurately to get the job done fast. However, this can cause major damage if the tool head collides with an unexpected object. To protect against such occurances, [Xnaron] developed a simple system to shut down his plasma …read more

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Wobble Disk Coffee Roaster Gets The Beans Just Right

Coffee roasting is an art or a science, depending on who you talk to. Both camps will however agree that attention to detail is key. Many diehard beanheads, as they’re known, will go so far as to create their own roasting hardware to get the job done just right. [Larry …read more

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384 Neon Bulbs Become Attractive Display

Neon lights have inspired much prose over the years, with their attractive light output receiving glowing adulation. [Pierre Muth] is a big fan, and decided to spend lockdown creating something suitably pretty for his desk.

The project consists of an 8×48 matrix display constructed out of INS-1 (ИНC-1) tubes. These …read more

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Die Lapping For Better CPU Performance

CPUs generate their heat in the silicon die that does all those wonderful calculations which make our computers work. But silicon conducts heat fairly poorly, so the thinner your CPU die, the better it will conduct heat out to the heatsink. This theoretically promises better cooling and thus more scope …read more

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Flipping a Coin 10,000 Times With A Dedicated Machine

Flipping a coin is often the initial example used to help teach probability and statistics to maths students. Often, there is talk of how, given a fair coin, the probability of landing heads or tails should approach 0.5. Of course, if you want to test this, it pays to have …read more

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Life Size Lancer Becomes Gears of War Motion Controller

Gears of War is a franchise famous for its giant gun with a big chainsaw on the front. [Eric] laid his hands on a toy replica, and decided it had to become a usable motion controller for the game.

The build is straightforward, following the usual format for motion controller …read more

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