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Raspberry Pi makes video walls cheap and energy efficient

Raspberry Pi is being used not only to feed cats but also make affordable video walls.

What is a video wall?
According to Wikipedia, “A video wall consists of multiple computer monitors, video projectors, or television sets tiled together contiguously or overlapped in order to form one large screen. Typical display technologies include LCD panels, LED arrays, DLP tiles, and rear projection screens.”

These screens are powered by computers and now Raspberry Pis are powering these.

Alex Goodyear at Culham Centre for Fusion Energy has succeeded in creating a video wall, powered by Raspberry Pi.

Goodyear explains, “This could open up the use of video walls for more shops, company reception areas, public buildings – anywhere that needs eye-catching but cheaper visual displays. We’ve been delighted by the results so far and want to make this more widely available. Our software makes it possible to achieve professional results for significantly less money than existing control systems. It is another example of the innovative ways in which the Raspberry Pi is being applied for low-cost technology solutions.”

The screens can be used for any kind of set-up as you can see in the images below.

Liz Upton of Raspberry Pi foundation says, “We’ve said many times that the single most innovative thing about the Raspberry Pi is its price. $25 or $35 gets you something that would have cost you four or five times that amount before the Pi arrived on the market. This means that you can save large sums of money in some applications, especially in applications where you need to buy a lot of separate devices. A video wall requires one device per screen, and another to drive them all together. I’ve seen video wall solutions being run with all kinds of devices at the back end; previously one of the cheapest ways to do this was to buy a Playstation for each of your screens – obviously a much more expensive (and power-hungry – you’re spinning a lot of hard drives all day to get the result you want) way to get what you’re after.”

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Tell us if you know of any such implementation of Raspberry Pi.e in the wild!

Swapnil Bhartiya

A free software fund-a-mental-ist and Charles Bukowski fan, Swapnil also writes fiction and tries to find cracks in the paper armours of proprietary companies. Swapnil has been covering Linux and Free Software/Open Source since 2005.

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