mardare bogdan

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mardare bogdan
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How LEDS work? Check more at

How LED's work - A light-emitting diode (LED) is a two-lead semiconductor light source. It is a pn-junction diode, which emits light when When a suitable voltage is applied to the leads, electrons are able to recombine with electron holes wi

DIY Infrared transmitter for iPhone, iPod

Make a customer LED infrared for your iPhone! Using this to control the shutter on my Canon

Simple DIY perimeter alarm with tripwire (for outdoors) Walmart has a package of multiples like these

Survival Forums SHTF Preparedness - Dollar Store perimeter alarm - read the other comments, there are some great, cheap ways to set up an alarm without having to rely on something electronic.

OMG - I love this project! I did doors on a cabinet - beyond awesome!

stained wooden boards with a dark stain - placed doormat on top - then sprayed over all with 4 light coats of creamy colored paint. When you remove it the stained wood that was covered by the mat leaves a beautiful design.