2947 1728 Technology Science & Technology Projects true Mon, 07 Apr 2008 16:39:09 -0700 /system/videos/0/47/29/2947.flv How To Build a Laser Security System http://www.howcast.com/videos/2947-How-To-Build-a-Laser-Security-System http://www.howcast.com/videos/2947-How-To-Build-a-Laser-Security-System/edit approved 243 640 480 <object width="425" height="352" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" id="howcastplayer"><param name="movie" value="http://www.howcast.com/flash/howcast_player.swf?file=2947"></param><param name="allowFullScreen" value="true"></param><param name="allowScriptAccess" value="always"></param><embed src="http://www.howcast.com/flash/howcast_player.swf?file=2947" type="application/x-shockwave-flash" width="425" height="352" allowFullScreen="true" allowScriptAccess="always" ></embed></object> 43 cognitivefilms http://img.howcast.com/system/thumbnails/2947/FIXED_laser_security_sd_xxlarge_maintained_aspect.jpg 25559 false false false 29971 1 59 Step http://img.howcast.com/system/thumbnails/2947/59.jpg Build the circuit 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.”

]]> 29972 2 111 Step http://img.howcast.com/system/thumbnails/2947/111.jpg Disassemble camera Disassemble the digital camera so you can access the board connected to the camera’s trigger button.

]]> 29973 3 119 Tip You may have to remove the camera’s board to get a good solder point on the terminal.

]]> 29974 4 126 Step http://img.howcast.com/system/thumbnails/2947/126.jpg Solder wires to terminals Look for the two tiny terminals that lead to the trigger button. Solder wires to each of these terminals and feed them through the trigger button hole.

]]> 29975 5 139 Step http://img.howcast.com/system/thumbnails/2947/139.jpg Reassemble the camera Reassemble the camera. If you can’t get it back together easily, use duct tape to keep it closed. Just don’t tape over the lens.

]]> 29976 6 148 Step http://img.howcast.com/system/thumbnails/2947/148.jpg Position circuit inside soap caddy Position the circuit inside the soap caddy so the photocell is exposed behind one of the holes.

]]> 29977 7 156 Step http://img.howcast.com/system/thumbnails/2947/156.jpg Connect battery to circuit Connect the battery to the circuit, and use tape to secure the whole assemblage inside the box.

]]> 29978 8 164 Step http://img.howcast.com/system/thumbnails/2947/164.jpg Attach wires to voltage relay Slip the two wires coming from the camera through another hole, and attach them to either side of the voltage relay.

]]> 29979 9 174 Step http://img.howcast.com/system/thumbnails/2947/174.jpg Cut & tape coat hangers Cut the coat hanger into several pieces. Tape one piece to the laser pointer and the others to the back of the mirrors.

]]> 29980 10 184 Step http://img.howcast.com/system/thumbnails/2947/184.jpg Place camera Place the camera in an inconspicuous location with the lens pointing at the object you want to protect and secure it in place.

]]> 29981 11 195 Step http://img.howcast.com/system/thumbnails/2947/195.jpg Position laser pointer Position the laser pointer in another inconspicuous place and secure it too.

]]> 29982 12 202 Step http://img.howcast.com/system/thumbnails/2947/202.jpg Place mirrors Place the mirrors to create a perimeter around the object you’re protecting, adjusting them until the laser hits the photocell.

]]> 29983 13 213 Step http://img.howcast.com/system/thumbnails/2947/213.jpg Test the system Now break the beam to test the system…

And get ready to confront the perpetrator with your irrefutable evidence.

]]> 29984 14 232 Fact The term LASER is really an acronym for Light Amplification by Stimulated Emission of Radiation.

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http://img.howcast.com/system/thumbnails/1130/ppn_fiorita_trip_wire_sd_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/1130-How-To-Make-a-Trip-Wire-Alarm 1728 2941 How To Create a Baby-Headed Dancing Frog 20442 HowcastGuide Mon, 07 Apr 2008 15:06:26 -0700 25 cognitivefilms ]]> 130 http://media.howcast.com/system/videos/1/41/29/2941.flv baby, baby-headed, creating, dance, dancing, DIY, Do It Yourself, doll, Essential Skills, frog, headed, Instructional, Learn to, make, making, project, projects.create, science, tech, technology, Tips, tutorial Technology Science & Technology Projects 8 http://img.howcast.com/system/thumbnails/2941/babyfrog_lab_nobug_sd_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/2941-How-To-Create-a-BabyHeaded-Dancing-Frog 1728 2944 How To Make a Clockwork Orange 8168 HowcastGuide Mon, 07 Apr 2008 15:40:34 -0700 16 cognitivefilms ]]> 81 http://media.howcast.com/system/videos/4/44/29/2944.flv clock, clockwork, DIY, Do It Yourself, Essential Skills, experiment, Instructional, Learn to, make, making, orange, projects, science, tech, technology, Tips, tutorial Technology Science & Technology Projects 3 http://img.howcast.com/system/thumbnails/2944/FIXED_clockwork_orange_sd_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/2944-How-To-Make-a-Clockwork-Orange 1728 2945 How To Build a Giant Floor Mat Nintendo Controller 7854 HowcastGuide Mon, 07 Apr 2008 15:41:24 -0700 28 cognitivefilms ]]> 156 http://media.howcast.com/system/videos/5/45/29/2945.flv build, building, controller, DIY, Do It Yourself, Essential Skills, floor, games, giant, Instructional, Learn to, make, making, mat, nintendo, play, playing, tech, technology, Tips, tutorial, video Technology Science & Technology Projects 5 http://img.howcast.com/system/thumbnails/2945/FIXED_giant_NES_sd_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/2945-How-To-Build-a-Giant-Floor-Mat-Nintendo-Controller 1728 2948 How To Make a Coin Battery 20298 HowcastGuide Mon, 07 Apr 2008 16:42:23 -0700 20 cognitivefilms ]]> 120 http://media.howcast.com/system/videos/1/48/29/2948.flv battery, Coin, DIY, Do It Yourself, Essential Skills, Instructional, Learn to, make, making, project, projects, science, tech, technology, Tips, tutorial Technology Science & Technology Projects 5 http://img.howcast.com/system/thumbnails/2948/FIXED_coin_battery_sd_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/2948-How-To-Make-a-Coin-Battery 1728 4345 How To Improve Your iTrip 3919 HowcastGuide Thu, 24 Apr 2008 06:56:06 -0700 13 cognitivefilms ]]> 65 http://media.howcast.com/system/videos/5/45/43/4345.flv DIY, Do It Yourself, Essential Skills, experiment, I, i-Trip, improve, improving, Instructional, iPod, iTrip, Learn to, project, projects, science, tech, technology, Tips, trip, tutorial Technology Science & Technology Projects 2 http://img.howcast.com/system/thumbnails/4345/itrip_master_sd_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/4345-How-To-Improve-Your-iTrip 1728 25387 How To Make a Metal Detector 64779 HowcastGuide Wed, 13 Aug 2008 06:00:54 -0700 62 Kipkay ]]> 126 http://media.howcast.com/system/videos/5/87/53/02/25387.flv technology, making, make, projects, metal, detector, finding, coins, metals, money Technology Science & Technology Projects 19 http://img.howcast.com/system/thumbnails/25387/metal_detector_hd_2_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/25387-How-To-Make-a-Metal-Detector 1728 271702 How To Make a Solar Charging Bag 10638 HowcastGuide Sun, 08 Nov 2009 04:04:54 -0800 27 gigafide ]]> 168 http://media.howcast.com/system/videos/4/82/40/27/274082.flv sun,solar-powered,making,constructing,solar,charging,electronics,technology,environment,electricity,saving Technology Science & Technology Projects 5 http://img.howcast.com/system/thumbnails/271702/make_a_solar_bag_thumb_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/271702-How-To-Make-a-Solar-Charging-Bag 1728 181515 How To Build a Mini Hovercraft 7427 HowcastGuide Fri, 22 May 2009 04:06:30 -0700 16 ninjagoldfish ]]> 94 http://media.howcast.com/system/videos/5/15/15/18/181515.flv technology, science, projects, buidling, constructing, hovering, flying, hovercraft, toys, Gadgets Technology Science & Technology Projects 4 http://img.howcast.com/system/thumbnails/181515/mini_hover_craft_hd_2_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/181515-How-To-Build-a-Mini-Hovercraft 1728 186279 How To Make a USB Fan 8568 HowcastGuide Thu, 11 Jun 2009 04:08:04 -0700 32 vinzfeller ]]> 147 http://media.howcast.com/system/videos/2/79/62/18/186279.flv technology, making, make, projects, constructing, computers, Usb, fan, old, crafts Technology Science & Technology Projects 3 http://img.howcast.com/system/thumbnails/186279/usb_fan_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/186279-How-To-Make-a-USB-Fan 1728 262687 How To Make a Fog Machine With a Household Iron 12203 HowcastGuide Sun, 11 Oct 2009 04:04:33 -0700 3 gigafide ]]> 203 http://media.howcast.com/system/videos/5/01/20/26/262001.flv technology,projects,making,creating,fog,machine,performances,concerts,theatre,productions,cheap,homemade Technology Science & Technology Projects 2 http://img.howcast.com/system/thumbnails/262687/DanielDavis_HowToMakeAFogMachine_HD_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/262687-How-To-Make-a-Fog-Machine-With-a-Household-Iron 1728 269431 How To Make a Marshmallow Gun 4385 HowcastGuide Wed, 04 Nov 2009 04:06:24 -0800 10 andrewfitzgerald ]]> 129 http://media.howcast.com/system/videos/4/94/27/27/272794.flv making,crafts,projects,guns,weapons,marshmallows,homemade,home Technology Science & Technology Projects 2 http://img.howcast.com/system/thumbnails/269431/MAKE_A_MARSHMALLOW_GUN_hd_1_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/269431-How-To-Make-a-Marshmallow-Gun 1473 184032 How To Watch Digital Video Files on an Xbox 360 4348 HowcastGuide Fri, 22 May 2009 04:06:30 -0700 6 mr_stewart ]]> 166 http://media.howcast.com/system/videos/2/32/40/18/184032.flv technology, video, game, Console, xbox, 360, watching, movies, digital, videos Technology Computer & Video Games Video Game Consoles 1 http://img.howcast.com/system/thumbnails/184032/digital_files_xbox_hd_1_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/184032-How-To-Watch-Digital-Video-Files-on-an-Xbox-360 1489 176605 How To Use the Reader Digital Book By Sony PRS-700 2798 HowcastGuide Mon, 04 May 2009 04:04:22 -0700 2 goluxx ]]> 176 http://media.howcast.com/system/videos/2/05/66/17/176605.flv technology, computer, hardware, handheld, portable, reader, ebook, books, Sony, digital Technology Computer Hardware Handheld & Portable Devices 0 http://img.howcast.com/system/thumbnails/176605/Goldstein_SonyReader_hd_xxlarge_maintained_aspect.jpg http://www.howcast.com/videos/176605-How-To-Use-the-Reader-Digital-Book-By-Sony-PRS700