How to build a laser security system

Develop and description see the text of the stages of this how-to videos. Howcast Check for other do-it-yourself videos and video cognitivefilms Science & Technology Projects category. You can help! Create your guide to DIY www.howcast.com right spots and make your own program with the Howcast Howcast Filmmakers www.howcast.com You have a mystery to be solved? Someone has to go with your stuff, and you do not have the faintest idea who he is, and you? Here's your chanceto take them in the act. To complete this How-To you need: a tape laser pointer on a small some mirrors LM741 chip resistor of 220 ohms A photocell A digital camera cheap wire hangers charge a small screwdriver Some isolated thin wire to a printed circuit board with battery 9 volt battery 9 volt equipment welding gun A pair of wire cutters A soap cadet with drainage holes of a voltage relay Step 1: Build the circuit to build the circuit. Center of the chip oncircuit. Pop in the voltage regulator. Connect the battery clip leads to the regulator. Run two more leads from the regulator. Pop the resistance and the photocell. Connect the photocell to the chip. Pop in the relay. Connecting to chip him. Connecting to the other side of the relay "power". Step 2: Remove to remove the camera so you can access the card attached to the camera's shutter button. Tip: You may need to remove the card from the camera to get a good weld...



http://www.youtube.com/watch?v=zQK1kTh57Fk&hl=en

Thanks To : circuit board