Data-rich 3.5mm jack vies with USB-C for headsets

The 3.5mm phone jack is a well-established standard in the audio industry and continues to get strong support from users in the market. Originally invented in the 19th century for telephone switch boards, it made its way into mobile phones, tablets, and personal computers to connect audio and communication headsets for phone calls or simply for listening to music. While the phone jack has a rather long evol ...

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Arduino’s new Nano board family is more powerful and affordable

Arduino's Nano line will soon welcome four new products. They're all small boards like the classic one, making Nano a family of small boards meant for compact projects. All the new boards boast low energy consumption and processors more powerful than what the classic has. Even better, they're all pretty affordable: the most basic entry called Nano Every, which you can use for "everyday" projects and can rep ...

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Elk Makes Prototype Board for Building Blockchain-Connected Devices

The team initially tried to build open-source hardware for IoT, now it is launching it on the blockchain instead. The firm plans to launch a tiny board that can connect to a blockchain. The equipment will also control electronic components like motors, sensors, and switches. This technology will make it possible for users to build an embedded blockchain system in a few minutes. Elk uses the K ...

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ULINKplus, A Debug Adapter With Power Measurment

While building an ultra-low power application, sensitive hardware and software validation is required to reach system and long battery life. Testing will need an interaction with the tested parts, like simulating input pins of the target application. These difficulties could be solved with ARM’s new debug adapter “ULINKplus“. It connects the target system with the PC through USB port using a 10-pin Cortex D ...

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THE PIANIST OCTOPUS

MIDI has been around for nearly forty years, but what do you do if you have an old ‘toy’ keyboard without MIDI? Or really any way to make it sound good? You could turn it into a player piano, and that’s exactly what [Alessandro] did with an old toy keyboard. It’s The Pianist Octopus, and it is perhaps the coolest, neatest pianist you’ve ever seen. This build uses 24 individual 9 gram hobby servos, which of ...

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LimeSDR Mini – Software-defined-radio card

The LimeSDR Mini development board is a hardware platform for developing and prototyping high-performance and logic-intensive digital and RF designs that use Altera’s MAX 10 FPGA and Lime Microsystems’ LMS7002M RF transceiver. LimeSDR vs LimeSDR Mini The LimeSDR and LimeSDR Mini are members of the same family of software-defined radios. One does not replace the other. Rather, they are complementary. Simply ...

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NEW PCB REVIVES ANCIENT BUBBLE LED DISPLAYS

For those of us who remember LED calculators, the HP 5082-7400 series red “bubble” displays hold a special charm. Available in 3, 4, or 5-digit varieties, these multiplexed 7-segment displays provided countless hours of entertainment to those who would spell upside-down words on their pocket calculators. In case you happen to be lucky enough to have access to a few of these beautiful vintage display sticks, ...

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Pi Zero Gameboy = GameBoy Zero

So the pi zero is cool, retro gaming is cool, im really not cool, but i thought 'what the hell!!' Im not overly fond of 'rats nest' wires, and i have a bit of an obsession with making things as small as possible, so this is what i came up with. tis just an ili9341 screen, a pi zero, 2 navi switches (5 way), and a battery (with charge/protect circuit) using the notro's fbtft driver, tasanakorn's fbcp code to ...

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Soil sensor mini kit shows if plant needs watering

Adafruit Circuit Playground Express Soil Sensor Mini Kit is designed to measure the soil moisture content. This kit, available now from Mouser, is based on the Circuit Playground Express platform and delivers the measurement utilising a nail and alligator clip. As the moisture encompassing a nail in the plant pot rises, the board detects the change and outputs the result as through the design. The platform ...

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DEAD BUG ARDUINO IS LIVELY AND SHIELD-COMPATIBLE

Microcontroller demo boards such as the Arduino UNO are ubiquitous on Hackaday as the brains of many a project which inevitably does something impressive or unusual. Sometime someone builds a particularly tiny demo board, or an impressively large one. In the case of the board featured here, the Arduino is a gorgeous labor of love which can’t really be called a board since there is no PCB. Instead of the tra ...

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UNCONVENTIONAL DRONE USES GAS THRUSTERS FOR CONTROL

You’ve got to hand it to [Tom Stanton] – he really thinks outside the box. And potentially outside the atmosphere, to wit: we present his reaction control gas thruster-controlled drone. Before anyone gets too excited, [Tom] isn’t building drones for use in a vacuum, although we can certainly see a use case for such devices. This is more of a hybrid affair, with counter-rotating props mounted in a centrally ...

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The ‘tough road’ to Nagaland Science Centre, Dimapur

Even as the number of visitors to the Science Centre located behind Super Market here, which also houses the Innovation Hub & Space Education Centre, has steadily increased from 6,775 in 2014 to 17,866 in the past 12 months, its shabby immediate surroundings remains a perennial eyesore. Little or nothing seems to have been done to improve the condition of the road. Nagaland chief minister Neiphiu Rio ha ...

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