Low voltage DC systems need suitable connectors. Different proprietary connectors are available, but usually with them problem is their price and availability. Traditional lighter plug as used in cars is awful in many ways. Some applications use XLR connectors successfully, with the downside that you can accidentally plug mic to such outlet. One thing I have sometimes seen in Finnish electrical installations →
https://www.hackster.io/naran-inc/diy-smart-home-doorbell-2-0-works-with-alexa-690c33?ref=channel&ref_id=425_published___&offset=1 This looks worth to check out project: Build your own DIY smart home doorbell for cheap, get notified when your guest knock at your door and remotely open by voice command. →
https://opensource.com/article/17/3/arduino-garden-projects?sc_cid=7016000000127ECAAY It’s time for gardeners to start making plans for spring and summer. For the more technically minded among us, it’s also a good time to start working on DIY projects that can keep things running smoothly. →
http://spectrum.ieee.org/view-from-the-valley/at-work/start-ups/this-dictionary-will-get-you-ready-for-talk-like-silicon-valley-day The denizens of Silicon Valley have been inventing their own language, one that is often as incomprehensible as pirate-speak outside of the Bay Area. Now there’s a Silicon Valley Dictionary, and it’s growing daily. Examples: Bus Factor: The number of people that need to be hit by a bus before their project is dead. Code Ninja: A →
https://giphy.com/gifs/26mkhPuTOy6889SqA https://m.imgur.com/6e2XRNM?r →
I posted a quick note on interesting looking OBS Studio software some time ago. OBS (Open Broadcaster Software) is a free and open source software for video recording and live streaming. It works on Windows, Mac and Linux. OBS could be described as some kind of combinaton of real time video mixing and video encoding/streaming →
https://opensource.com/article/17/4/5-lessons-learned-when-developing-my-first-web-app?sc_cid=7016000000127ECAAY Read about lessons learned by one university student when creating his first web app, an online cyber cafe management system. →
https://opensource.com/article/17/2/linux-boot-and-startup?sc_cid=7016000000127ECAAY Ever wondered what it takes to get your system ready to run applications? Here’s what is going on under the hood. →
http://www.edn.com/design/power-management/4458294/Using-a-supercapacitor-for-power-management-and-energy-storage-with-a-small-solar-cell–Part-1 The environment has abundant energy but little power. Energy harvesting can tap the environment’s “infinite” source of energy, and avoids the cost of wiring to mains power or replacing of batteries. This article will look at using small solar cells. Depending on the light level, whether indoors or out, small solar cells may deliver →
This is 150W 12V DC to 230V 50 Hz AC conveter designed to be used in car. It failed few days ago when powering a laptop. Let’s take a look what is inside. Closer look. Here is DC power input filtering.. looks as quite ugly late add-on to design.. More circuit board details. On the →