| Check out the video version of this guide on | | | | already attached, just cut and strip another piece |
| Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â How To Make a | | | | of your own to use. Step 4: Connect wires to |
| Trip Wire Alarm | | | | battery holder |
| Get more science and technology project ideas at | | | | Locate the wire leading from the positive pole of |
| Â Â Â Â Â Science and Technology Projects You | | | | the noisemaker and connect it to the battery |
| Will Need | | | | holder. Now do the same with the remaining black |
| - A clothespin | | | | wire coming from the clothespin. |
| - Some aluminum tape | | | | You’ve just built a completed circuit. Connect |
| - Some red electrical wire | | | | the battery to make sure it works. Now |
| - Some black electrical wire | | | | DISCONNECT IT! Step 5: Fold paper & string |
| - A wire cutter and stripper | | | | fishing line |
| - A battery-powered noisemaker | | | | Start folding your sheet of paper into a triangle, |
| - A 9V battery | | | | but stop halfway. Now string the fishing line |
| - A 9V battery holder | | | | across the strongest crease, tie it off, and finish |
| - Some fishing line | | | | the triangle. Step 6: Put folded paper inside |
| - A sheet of paper Step 1: Wrap aluminum tape | | | | clothespin |
| around clothespin tips | | | | Put the folded paper inside the clothespin. Step 7: |
| Wrap aluminum tape around both tips of the | | | | Tape to inconspicuous place |
| clothespin, leaving a tab on each end so you can | | | | Tape the clothespin, noisemaker, and battery to |
| attach wires. Step 2: Tape electrical wire to | | | | an inconspicuous place in your coworker’s |
| clothespin | | | | path. Step 8: Run fishing line to secure anchor |
| Cut a piece of black electrical wire, strip both | | | | Run the fishing line to a secure anchor across the |
| ends, and tape one end to one tip of the | | | | way. Step 9: Wait for “Mr. Chirpy” to |
| clothespin. Step 3: Connect negative pole to other | | | | head your way |
| tip | | | | Now just wait for “Mr. Chirpy” to head |
| Locate the wire running from the negative pole of | | | | your way. |
| the noisemaker—the pole marked with a minus | | | | Did you know? During the 2004 battle of Fallujah, |
| sign—and connect it to the other tip of the | | | | U.S. military units played loud music and |
| clothespin. | | | | “deterrent tones,” hoping to distract |
| If your noisemaker doesn’t come with wires | | | | insurgents and “increase their vulnerability. |