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

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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 Malte, Marco, 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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UCTRONICS’ PoE HAT Mini Adds Power-over-Ethernet to a Raspberry Pi in Tiny Footprint

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Designed to leave most GPIO pins free and not block the SoC, UCTRONICS’ PoE HAT Mini is an interesting add-on for Power-over-Ethernet.

UCTRONICS has launched a pair of alternatives to the Raspberry Pi Power-over-Ethernet (PoE) HAT, and while one is a near-copy the second is considerably smaller: the PoE HAT Mini.

The original Raspberry Pi PoE HAT was unveiled three years ago alongside the Raspberry Pi 3 Model B+. Designed to simplify cabling for remote installations, the add-on connects to the Raspberry Pi’s general-purpose input/output (GPIO) header and a second dedicated header found only on the Raspberry Pi 3 Model B+ and later Raspberry Pi 4 Model B, and allows the device to be powered using an Ethernet cable and a compatible switch or power injector.

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This Giant Display Uses 1,152 Seven-Segment Digits to Show Graphics

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Divided across a matrix of 7,200 segments within 1,152 individual digits, this complex display is a unique way to draw images.

Ordinary displays typically feature a matrix of LEDs or liquid crystals that illuminate in specific patterns to generate images. On the other hand, the classic seven-segment module uses, as the name implies, seven LED segments that light up when power is applied. Some modules even combine several of these together and sometimes add decimal points. Maker Chris Combs had the idea to combine these two display technologies together by using the individual segments within each module as a pixel to draw a large image within a massive display. This gives a very retro, yet futuristic, aesthetic that is hard to replicate otherwise.

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Arduino Sinewave Generator

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A signal generator usually has various signals that is can generate, such as Sine, Square and triangle. Others have a sweep function and an arbitrary waveform. These are useful tools in the workshop. They can be used to test out audio circuits, op amp circuits and testing circuit response. Most modern function generators can easily put out frequencies up to 1 Mhz.

So, while I did not expect an Arduino based sine wave generator to replace my desktop function generator, I thought it would be interesting to see how to go about designing one and how it would perform.

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Western Digital Launches 20 TB Mechanical Hard Drive With OptiNAND Technology

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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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How To Make Robots Move Smoothly | Arduino Tutorial

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There are lots of great animatronic and robotics props and projects out there, and it’s easy to make r/c servos and other actuators move using the Arduino servo library. This means that the servos stops and start very suddenly, moving as fast as they can between positions. In this video I’m going to show you two lines of very simple code to make things smoother.

Sensitive Arduino Lightning Detector with Homemade Sensor

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How to make a sensitive homemade lightning detector based on cheap AM receiver IC TA7642 and Arduino Nano.

A lightning detector is a device that detects lightning produced by thunderstorms.
In one of my previous videos, I showed you how to make such a detector with the help of the AS3935 sensor board which is specially designed for this purpose. This time I will show you how to make same such device, but now with a homemade detector circuit based on cheap AM Receiver IC TA7642.

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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.

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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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