Speak4Me is an eye-to-speech module designed to assist those unable to communicate verbally

People who suffer from physical disabilities that leave them unable to speak or communicate effectively can end up frustrated or largely ignored. In response to this issue, Hackaday users MalteMarco, and Tim R wanted to create a small device that can turn small eye movements into simple commands and phrases for easier communication, which they call the “Speak4Me.”

At the most basic level, the Speak4Me consists of an Arduino Nano board that controls a set of four infrared sensors which are pointed at the user’s eye within a single glass lens. Then once every 100 milliseconds, a measurement is taken to determine the location of the pupil and thus the direction being focused on. The word or phrase is chosen by first selecting a profile containing four groups of four elements each, for a total of sixteen possible combinations per profile. As an example, the caretaker profile has elements such as “yes,” “I want to sit,” and even “I need medical treatment.”

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Western Digital Launches 20 TB Mechanical Hard Drive With OptiNAND Technology

Western Digital Unleashes 20 TB Mechanical Hard Drive With OptiNAND Technology

The 20 TB mechanical drive’s flash memory is integrated “iNAND UFS embedded flash drive (EFD) on the circuit board,” and also performs with a 3D TLC UFS flash memory, the capacity of which has not been released to the public. Western Digital intends to improve reliability and performance with the new drive.

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Researchers from TU braunschweig have developed a new method of 3D printing concrete that shows potential for more complex printed structures.

A team of researchers from TU braunschweig in germany has developed a new method of 3D printing concrete that shows potential for more complex 3D printed structures. currently, 3D printed concrete construction focuses on three methods, material extrusion, particle-bed binding, and jetting, all of which apply the concrete in horizontal layers. unlike these layered techniques, injection 3D concrete printing (I3DCP) consists of robotically injecting a fluid material into another material with specific rheological properties, in other words, how the material responds under force or stress. free from gravity, injecting allows more complex structures to be printed in one piece.

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Wearable Scope Lets Your Fingers do the Probing

For frantic hacking sessions where seconds count, this forearm mounted oscilloscope with fingertip probes built by [aniketdhole] might be just what you need. Well, maybe. It’s not immediately clear why you might want to wear an oscilloscope on your arm, and sticking your fingers inside of powered up electronic devices sounds specifically like something your mother probably told you not to do, but here it is anyway.

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Creality’s Economical New ‘CR-SCAN 01’ 3D Scanner

Chinese 3D printer manufacturer Creality has announced the launch of a cost-effective yet highly-capable new 3D scanner. 

Known as the ‘CR-Scan 01,’ Creality’s latest entry into the scanning market is easy-to-use but features high-end specifications, and is able to capture details down to 0.1mm in size. Thanks to its adjustable modes, multi-pose alignment and enhanced scanning width, the system ultimately allows designers to recreate anything from small items to furniture, with impressive simplicity, affordability and precision. 

According to Creality, the increasing popularity of VR and AR technologies has created a rising demand for scanners that are easy to operate, yet capable of capturing the data needed for producing quality models. To address this perceived demand, the company says that it has developed a new UI to make the CR-Scan 01 so user-friendly, that it’s “as simple as a fully-automatic washing machine.” 

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Sakuu’s 3D printed solid state battery could be a boon for electric vehicles

The company will begin mass production in 2022

Something to look forward to: Solid-state batteries are still nebulous outside of the lab. Still, automakers are scrambling to be the first in the race to build the first electric car to take advantage of the added energy density and better safety when compared to lithium-ion designs. To that end, they’re investing in companies like QuantumScape, Solid Power, and Sakuu to develop manufacturing techniques that either build on existing approaches or rely on new additive manufacturing technology.

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Google says it has created a time crystal in a quantum computer, and it’s weirder than you can imagine

In what could be the first useful application of quantum computing, Google’s scientists have demonstrated the existence of a new phase of matter.

In a new research paper, Google scientists claim to have used a quantum processor for a useful scientific application: to observe a genuine time crystal. 

If ‘time crystal’ sounds pretty sci-fi that’s because they are. Time crystals are no less than a new “phase of matter”, as researchers put it, which has been theorized for some years now as a new state that could potentially join the ranks of solids, liquids, gases, crystals and so on. The paper remains in pre-print and still requires peer review

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Nicolai Valenti Developed a Budget-Friendly Metal 3D Printer

This 3D printer allows makers to create metal parts without breaking the bank.

Nicolai Valenti created an affordable PLA metal 3D printer that allows makers to prototype metal parts. The machine relies on SS316L, copper, aluminum, and titanium powders, heated via a Nichia laser array beaming 405 nm light to produce metal parts. Overall, this is Valenti’s fourth and final metal 3D printer prototype, and it utilizes three NEMA 17 stepper motors with GT2 belts.

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Was Lord Kelvin wrong? 3D-printed shape casts doubt on his 150-year-old theory

A 150-year-old theory about an otherworldly shape proposed by Lord Kelvin, one of history’s greatest physicists, has finally been put to the test — and his conjecture is now in doubt.

In 1871, William Thomson, more commonly known as Lord Kelvin — a famed British physicist who made key contributions to electromagnetic theory, thermodynamics, navigation and the absolute temperature system that bears his name — proposed a theory about a strange hypothetical shape, which he called an isotropic helicoid.

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3D Printed Material Might Replace Kevlar

Prior to 1970, bulletproof vests were pretty iffy, with a history extending as far as the 1500s when there were attempts to make metal armor that was bulletproof. By the 20th century there was ballistic nylon, but it took kevlar to produce garments with real protection against projectile impact. Now a 3D printed nanomaterial might replace kevlar.

A group of scientists have published a paper that interconnected tetrakaidecahedrons made up of carbon struts that are arranged via two-photon lithography.

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