Microfluidic LEGO Bricks

See the original posting on Hackaday

Years ago, prototyping microfluidic systems was a long, time-intensive task. With inspiration from DIY PCB fabrication techniques, that time is now greatly reduced. However, even with the improvements, it still takes a full day to go from an idea to a tangible implementation. However, progress creeps in this petty pace from day to day, and in accordance, a group of researchers have found a way to use 3D printed molds to create microfluidic LEGO bricks that make microfluidic prototyping child’s play.

For the uninitiated, microfluidics is the study and manipulation of very small volumes of water, usually a millionth of …read more

Beefy 100 Amp Electronic Load uses Two MOSFETs

See the original posting on Hackaday

[Kerry Wong] had some extreme MOSFETs (IXTK90N25L2) and decided to create a high current electronic load. The result was a two-channel beast that can handle 50 A per channel. Together, they can sink 400 W and can handle a peak of 1 kW for brief periods. You can see a demo in the video below.

An electronic load is essentially a load resistor you can connect to a source and the resistance is set by an input voltage. So if the load is set to 10 A and you connect it to a 12 V source, the MOSFET should look …read more

The Modern Application Stack – Part 5: Using ReactJS, ES6, and JSX to Build a UI (the Rise of MERN)

See the original posting on DZone Python

Modern Application Stack – Part 1: Introducing The MEAN Stack introduced the technologies making up the MEAN (MongoDB, Express, Angular, Node.js) and MERN (MongoDB, Express, React, Node.js) Stacks, why you might want to use them, and how to combine them to build your web application (or your native mobile or desktop app).

The remainder of the series is focussed on working through the end to end steps of building a real (albeit simple) application – Mongopop. Part 2: Using MongoDB With Node.js created an environment where we could work with a MongoDB database from Node.js; it also created a simplified interface to the MongoDB Node.js Driver. Part 3: Building a REST API with Express.js built on Part 2 by using Express.js to add a REST API which will be used by the clients that we implement in the final posts. Part 4: Building a Client UI Using Angular 2 (formerly AngularJS) & TypeScript completed the MEAN stack by adding an Angular 2 client.

Snap is reportedly working on a drone

See the original posting on The Verge

Snap, the maker of Snapchat, is developing a drone, according to a report from The New York Times. The drone could be used to take photos and video, though it is not yet clear whether it will be made available to consumers, the Times reports, citing people familiar with the plans.

Snap’s experiment with drones underscores its intent to branch out into new products, following the release of its camera-equipped Spectacles last year. Snap has sought to brand itself as a camera company, and in a video for investors last month, CEO Evan Spiegel spoke about the power of camera technology as a communications tool.

The Times report also comes ahead of Snap’s initial public offering this week. The company is expected to price its stock on…

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The new GeForce GTX 1080 Ti is Nvidia’s fastest graphics card ever

See the original posting on The Verge

Nvidia has announced its next monster graphics card: the $699 GeForce GTX 1080 Ti. Nvidia CEO Jen-Hsun Huang unveiled the new card on stage at the Game Developers Conference in San Francisco, where he promised that the GTX 1080 Ti not only offered “35 percent more performance” than its predecessor (the base GTX 1080), but that it was even faster than the current king of cards — the $1,200 Titan X.

The GTX 1080 Ti beats out the regular GTX 1080 in most specifications, with 11 GB of 11 Gbps DDR5X VRAM, compared to its predecessor’s 8 GB. And while the Titan X has more RAM — 12 GB — it runs at slower speeds of 10 Gbps, and falls very slightly behind the new card in terms of bandwidth and compute power. The GTX 1080 Ti also isn’t as much of…

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Nearly one year after launch, Apple Pay finds limited traction in China

See the original posting on TechCrunch

An employee works on a laptop computer as he talks with a customer near a sheet showing accepted methods of payment, including Apple Pay, top left, at an Apple Store in Beijing, Thursday, Feb. 18, 2016. Apple Inc. on Thursday launched its smartphone-based payment system in China where the electronic payments market is already dominated by an arm of e-commerce giant Alibaba. (AP Photo/Mark Schiefelbein) After a slow start, Apple Pay is now dominating its home country, the United States, but the same can’t be said of China where it is up against a different set of challenges. Data from Boston Retail Partners shows that Apple Pay is now accepted by 36 percent of merchants in the U.S., thus making it one of the most widely available mobile payment methods in the country. However, to date… Read More

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