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All items in category Audio & Video
Camera with gesture recognition powered by harvested energy
December 1, 2016 by Denis Meyer

Camera with gesture recognition powered by harvested energy

At first designed simply to reactivate peripherals from standby or sleep states, the process has proved capable of recognising specific gestures (a Z for example, drawn with an arm) and various patterns without a notable increase in power use. A camera with gesture recognition can now be powered with energy harvested on site, allowing it to be placed away from any power sources.
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Building (loudspeakers) yourself? Certainly! Do it!
November 18, 2016 by Thijs Beckers

Building (loudspeakers) yourself? Certainly! Do it!

You will undoubtedly know it: “Busy, busy, busy.” But the bow can't always be highly strung. That is why most people are looking for relaxation in the pursuit of a hobby. I'm keen to start a discussion and give you ideas.
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Are you interested in Audio Electronics?
November 15, 2016 by Joao Martins

Are you interested in Audio Electronics?

Are you interested in Audio Electronics? There’s a magazine for that! …and a website! …and a weekly newsletter! audioXpress magazine, audioXpress.com and The Audio Voice newsletter is the solution for all your audio needs!
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Energy-efficient display for data glasses
November 8, 2016 by Harry Baggen

Energy-efficient display for data glasses

Data glasses present data to the user’s eyes by means of a small display. Unfortunately, the display and associated drive circuitry consume a fair amount of power, so battery life is limited. Researchers at the Fraunhofer Institute for Organic Electronics, Electron Beam and Plasma Technology (FEP) in Germany have developed an energy-efficient OLED display for this sort of application, which cuts power consumption to a fraction of what current displays require.
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Build a LOUD sound player
November 1, 2016
In progress
by Clemens Valens

Build a LOUD sound player

Searching for a powerful gong or audio notifier? The "Card Sound" board presented here consists of a TDA7266 audio amplifier featuring two 7-watt outputs, a CS4344 AD converter, an STM32F401 ARM Cortex-M4 microcontroller and a slot for a micro SD card. The goal is to play different (high-quality) sounds stored on an SD card with enough volume to wake up even the deepest sleeper.
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Build an electronic speaker switch box (with remote control)
October 10, 2016
Proposal
by Clemens Valens

Build an electronic speaker switch box (with remote control)

Some people would like to listen to a 5+1 surround audio system, but don't want to give up their stereo system. However, both systems in one room would require eight speakers, which is too much for many and also not necessary. Since both systems have speakers for the left and right channels the idea was born to build a switch box which allows configuring the system as 5+1 or as stereo while only requiring the 5+1 system's speakers.
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SilentSwitcher: a compact super power supply for audio circuits
October 4, 2016 by Harry Baggen

SilentSwitcher: a compact super power supply for audio circuits

Audio specialist Jan Didden, well known for various audio projects in Elektor and his own publication Linear Audio, has developed a special power supply module designed to supply clean power to high-end analog and digital audio circuits. According to the designer, the SilentSwitcher module is line voltage independent and produces little noise or RFI, and its power dissipation is virtually zero.
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What’s happened to the real audiophiles?
September 30, 2016 by Harry Baggen

What’s happened to the real audiophiles?

Nowadays it looks like we’re all listening to music from compressed files. Spotify and the like are of course easy and convenient, but surely you miss the authentic details? From where we sit, it looks like the number of people who are truly interested in top-end audio and are willing to pay what it takes can be counted on the fingers of one hand. Why is that?
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Review: Raspberry Pi 3 Kodi/XBMC Media Player
September 22, 2016 by Harry Baggen

Review: Raspberry Pi 3 Kodi/XBMC Media Player

For a change this review is not about test equipment or a development board, but instead a practical test of a Kodi media player, based on the Raspberry Pi 3, which has been a popular item in the Elector Store for a good while already. Does this kit really provide value for money, and is the Kodi media player actually as convenient and good as everyone claims?
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USB controlled DMX Interface kit
September 20, 2016 by Denis Meyer

DIY USB controlled DMX interface kit

Control your various DMX fixtures using a PC with USB interface and the included "DMX Light Player" software!  Write your own software with the provided DLL. Test your gear with the stand alone test function which outputs all 512 channels at a time, with adjustable levels. This interface is supplied as an easy to assemble kit.
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