Hi-Tech Arena

I’m excited to share my latest open-source project: Meshtastic_RG35XXPlus — a practical helper application that brings Meshtastic mesh communication tools to the Anbernic RG35XX / RG Cube handheld family. 🎮 Why? Because these devices have great displays, Python support, and network connectivity — ideal for lightweight field tools. ➡️ Source code and details: https://github.com/error0327/Meshtastic_RG35XXPlus ( GitHub ) What Is Meshtastic? Meshtastic is an open-source, decentralized mesh networking platform built on inexpensive LoRa radios. It lets you send messages (text, telemetry, and small data) over long distances without relying on cellular or internet networks. ( GitHub ) At the core, Meshtastic devices form a mesh network — where each node forwards messages to others, extending communication reach far beyond what a single radio could do on its own. ( Wikipedia ) Common use cases include: Outdoor expeditions (hiking, biking, camping) where cellular coverage is poor. ( Mesht...

In the following tutorial you will find out how to Burn your ATiny85 chip-set to work at 8Mhz . and run a simple LED Blinking example .

Here is some information about how to use ATtiny85 with Arduino IDE.   ATtiny85 is a small (only 8-pin MCU from Atmel) and is available in both DIP8 (Hole Mount) or SOIC8 (Surface Mount) .   These are available in a lot of finished products such as Adafruit Gemma , Adafruit Trinket and LilyPad .   There are many other cards on the market, but let's start from the beginning. ATtiny85 has 8Kbytes Flash (program memory), 512bytes EEPROM, 512bytes RAM and only 8 sticks, the entire data sheet can be loaded here .   2 pins are needed for feeding, only 6 I / O left (PB0-PB5), but you often want one of the I / O pins as external RESET (PB5) to remain 5 I / O green 0-4 in the picture below).   Why do you want to use such a small rack? In some cases, this may be enough if you have an easy task to perform, space shortage, energy-saving or cost-critical application.   You drive with an internal osci...

New screen technologies rarely enter the market. The two biggest reasons, among all of these concerns, are cost and appearance. If a display costs more to manufacture than competitors, it needs to look great. If it doesn’t look amazing, then consumers won’t buy it. What makes CLEARink a contender in many different markets: it’s both cheaper to produce and looks better than its e-paper competitors. The technology brims with so much promise that it won Best of Show at Display Week 2017. Sri Peruvemba, Head of Marketing at CLEARink Displays, answered several questions regarding CLEARink Display’s electrophoretic technology. Here are just a few reasons why CLEARink seems destined to become a mover and shaker in the e-reader space. CLEARink Looks Better Than E Ink The CLEARink technology looks like E Ink, but with some big differences. While both share an underlying technology (electrophoresis), the secret behind CLEARink lies in a new type of ink, co-developed with Merck, and a...

I think this is the answer for , can a Robot replace a human security guards ! 

Samsung's Galaxy S5 may be getting lots of smart new accessories, but the Korean smartphone maker is also making sure its lower-powered phones get some love too. After including various software usability functions in the Galaxy Core Advance at the end of last year, the company today introduced three new accessories that have been designed specifically to help disabled or visually impaired users do more with their Android device. First up is the Optical Scan Stand, a raised bracket that automatically triggers the phone's OCR features to recognize and read aloud text placed in front of the phone. There's also Voice Labels, which are similar to Samsung's NFC-equipped TechTile stickers, but let visually impaired users make voice notes or record short explanations on how to use various devices around the home. Perhaps the most impressive accessory of the three is Samsung's Ultrasonic Cover: a specialized case that uses sound waves to detect people or objects (in...

When UK Prime Minister David Cameron gave a speech at CeBIT this year, what examples did he use to highlight tech innovation in Britain? Yes, ARM and Imagination were on his list, but he also referred to the tiny, Linux-based computer called Raspberry Pi, which has now sold over 2.5 million units. In a timely fashion, the Pi's makers, element 14, have just announced a new $33,Wolfson-powered audio card that should give the device a broader range of functions. The add-on board fits right onto the Pi's P5 pins and carries a Wolfson audio processor that supports high-res audio up to 24-bit / 192KHz, which can be played via a direct connection to an amp over 3.5mm line-out or alternatively via a digital S/PDIF output. Audio recording, meanwhile, comes courtesy of two onboard MEMS mics (useful for things like voice control), a 3.5mm mic jack and a digital S/PDIF input. It's true that some of these audio capabilities have already bee...

Amal Graafstra snaps on a pair of black rubber gloves. “Do you want to talk about pain management techniques?” he asks. The bearded systems administrator across the table, who requested I call him “Andrew,” has paid Grafstra $30 to have a radio-frequency identification (RFID) chip injected into the space between his thumb and pointer finger, and as Graafstra describes Lamaze-type breathing methods, Andrew looks remarkably untroubled, in spite of the intimidatingly high-gauge syringe sitting on the table between them. Graafstra finishes his pain talk, fishes a tiny cylindrical two-millimeter diameter EM4012 RFID chip out of a tin of isopropyl alcohol, and drops it into the syringe’s end, replacing the RFID tag intended for pets that came with the injection kit. He swabs Andrew’s hand with iodine, carefully pinches and pulls up a fold of skin on the top of his hand to create a tent of flesh, and with the other hand slides the syringe into the subcutaneous layer known as the fascia...

By : HAYLEY TSUKAYAMA Wearable devices are already bringing technology much closer to you than you ever may have expected, but Google's just kicked it up to a whole new level. The company has announced a project to make a smart contact lens. But this gadget isn't going to be used to deliver your email straight into your skull - at least not yet. This project is working to tackle one of the biggest health problems facing the country today: diabetes. Given the wariness around wearable devices and their capabilities for data collection, the idea that the company would get that much closer raises the question: how will Google handle this data? Or, for that matter, how can any commercial company stepping into a new world of collecting sensitive medical data deal with the security concerns? It's a question that Google's clearly thought a lot about, said Joseph Lorenzo Hall, chief technologist at the Center for Democracy and Technology, who was briefed on the lens b...

The Consumer Electronics Show in Las Vegas is turning out to be a blockbuster—and with good reason. Last year's attendance topped a record 150,000, and every indication is that this year will match or exceed that number. And you would think that with Mobile World Congress looming in February that we'd see little action in the mobile space, but that's not the case. So what's hot on the CES floor this year? It's positively littered with tablets, convertible laptops, phones, fitness gadgets, cameras, HDTVs, and cars—you name it, and you'll find a ton of it here. CES is not only a good indicator of what's hot, but it's also indicative of what's dead. For example, Vizio made a big splash with its 2014 HDTV lineup, which lacks 3D support—a far cry from what you would have seen just a year ago. Consumers largely hated it, so now it's either buried in a submenu or gone altogether. CES 2014 BugManufacturers aren't giving up on smartwatches yet; it ...

Discover the Intel® Edison development board, a tiny, ultra-power-efficient development platform the size of an SD* card that is small enough to drop into just about anything.  It can be designed to work with most any device—not just computers, phones, or tablets, but chairs, coffeemakers, and even coffee cups. The possibilities are endless for entrepreneurs and inventors of all kinds. The Intel Edison board features a low-power 22nm 400MHz Intel® Quark processor with two cores, integrated Wi-Fi and Bluetooth*, and much more. The unique combination of small size, power, and rich capabilities makes the Intel Edison board a game changer, lowering the barriers to entry for thousands of visionaries. Intel Edison board-powered devices can cooperate in highly customized and sophisticated ways. These devices don't have to be hardwired one-trick ponies; they can house multiple apps that can be downloaded and installed just like we do with phones and tablets.

by Brian Klug & Anand Lal Shimpi NVIDIA has taken to using CES as its platform for launching members of its Tegra mobile SoC family. This year was no different as it shifted branding a bit in its announcement of the Tegra K1, formerly known as Project Logan. With Tegra 2 NVIDIA’s big selling point was being first to dual-core in Android. Tegra 3 attempted to do the same with being first to quad-core. Tegra 4 just made things faster. Tegra K1 on the other hand does away with the gimmicks and instead focuses on fundamentals. The SoC will come in two versions, one version with a quad-core (4+1) Cortex-A15, and one that leverages two of NVIDIA’s own 64-bit ARMv8 Denver CPUs. More importantly, they both ship with a full implementation of NVIDIA’s Kepler GPU architecture. In fact, Tegra K1 marks a substantial change in the way NVIDIA approaches mobile GPU design. From this point forward, all mobile GPUs will leverage the same architectures as NVIDIA’s desktop parts. As...

Understanding what WiTricity technology is —transferring electric energy or power over distance without wires—is quite simple. Understanding how it works is a bit more involved, but it doesn’t require an engineering degree. We’ll start with the basics of electricity and magnetism, and work our way up to the WiTricity technology. Electricity: The flow of electrons (current) through a conductor (like a wire), or charges through the atmosphere (like lightning). A convenient way for energy to get from one place to another! An illustration representing the earth's magnetic field Magnetism: A fundamental force of nature, which causes certain types of materials to attract or repel each other. Permanent magnets, like the ones on your refrigerator and the earth’s magnetic field, are examples of objects having constant magnetic fields. Oscillating magnetic fields vary with time, and can be generated by alternating current (AC) flowing on a wire. The strength, direction, and extent of ...