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Surround Light for PC and TV

Due to the fact that we received two circuit designs for television mood lighting and they both fit with the theme of this issue, we initiated a unique Elektor project: in this issue we present two completely different designs that produce nearly the same effect. Our French contributor Alex Vercey took the analogue approach, while Steffen Sch& 252;tte from Germany went the "microcontroller way". See, compare, experience for yourself.

What University

So you were thinking of studying for an Electronics and Electrical Engineering degree or similar qualification at a UK university or other higher level educational establishment? Here's a 3-step primer on the subject.

CAN Explorer

Implementing the CAN bus network is not a trivial undertaking. This low-cost solution is a CAN board which sits between the CAN bus and a PC. Using the versatile (free) software it can monitor activity on the network and test the functioning of other nodes.

LED Ringflash

With macro-photography, if lighting conditions are not ideal, it will be necessary to resort to the use of flash, with the attendant risk of shadows. The solution is a ringflash -- and while we're about it, why not one using LEDs?

Power to the LEDs

In two short picture stories we tell not only how LEDs are designed and produced (basically!), but also look at what Philips Lumileds Lighting Systems are pursuing technically in a bid at making a versatile high-power LED for mass production.

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