System

Logitech Z Cinema Advanced Surround Sound System Wins AmazingTechProducts.com award. Check it out and others at:
http://www.AmazingTechProducts.com

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Watch this video for a demonstration of “How To Build a Laser Security System”. To complete the task, you will need:

A laser pointer

Get started with the first step: Build the circuit. Center the microchip on the circuit board. Pop in the voltage regulator. Connect the battery clip leads to the regulator. Run 2 more leads out from the regulator. Pop in the resistor and the photo cell. Link the chip to the photo cell. Pop in the relay. Link the chip to it as well. Link the other side of the relay to “power.”

For the complete guide, go to http://www.howcast.com/videos/2947-How-To-Build-a-Laser-Security-System

Also check out Howcast for other do it yourself videos from cognitivefilms and more videos in the Science & Technology Projects category.

How can you contribute? Create your own DIY guide at http://www.howcast.com/videos/new or apply to the Howcast Emerging Filmmakers Program at http://www.howcast.com/filmmakers/apply

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CCTV for the home? Logitech announces a new three camera security system they reckon can be set up on your PC in just 15 minutes. Katie Scott went to check it out.

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