51 High-Tech Practical Jokes for the Evil Genius by Brad Graham

By Brad Graham

Supply your mates and relations the surprise in their lives! fifty one High-Tech functional Jokes for the Evil Genius has every thing you must pull devastatingly humorous (and safe!) technical pranks. From the “evasive beeping thing” to “rats within the walls” to the “rigged lie detector,” you’ll discover a plethora of pranks that may feed your internal hacker whenever you create a nation of utter confusion round you! utilizing easy-to-find components and instruments that each one Evil Geniuses can get their palms on, those well-played but innocuous pranks will confound your unsuspecting objectives whenever. Plus, each device will be combined and paired, permitting you to create enormous quantities of bigger, much more twisted evil prank units! fifty one High-Tech functional Jokes for the Evil Genius offers you:

• directions and plans for fifty one simple-to-advanced initiatives, whole with 2 hundred how-to illustrations that allow you to construct each one equipment visually

• Frustration-factor removal—all the wanted components are indexed, in addition to sources

• Video hyperlinks to some of the functional jokes on YouTube.com

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Additional info for 51 High-Tech Practical Jokes for the Evil Genius

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Figure 2-13 might look familiar, especially if you built the previous project, since the 555 timer circuit is almost identical with the exception of the 10K value of resistor R2. With resistor R1 at 1M, R2 at 10K, and capacitor C1 at 100 µF, the timing cycle will occur about once every minute and will last only a few seconds. Because of this long timing cycle, it will be difficult to detect the exact location of the knocker, although if placed near the door, will certainly sound like an invisible person is knocking on it once in a while.

The plastic bottle cap will be used to hold the resistor and stink formula to create what I call the “stink capsule,” a ready-to-go stink-generating Project 4—Putrid Stink Machine Figure 2-16 Battery pack, resistor and relay device that simply needs to be connected to a 12-volt power source. If you want to experiment with the best resistor value, connect the resistor of your choice directly across the 12-volt power source. However, do keep in mind that the test is destructive if successful, and your resistor will turn into a smoldering blob of carbon within 10 seconds, generating a foul smell all on its own.

The circuit is simple enough to hand wire on the underside of the perforated board using some hookup wire and a soldering iron. Then, it was tested with a fresh battery and the lights off. If you find that the unit will not start when the lights are out, test first to ensure that there is sound output by removing the CDS cell completely, which will cause the unit to start dripping. When you reinstall the CDS, the unit will stay quiet until there is absolutely no light at all in the room. Even the smallest bit of light will silence the device, so if your target room has any ambient light, you will have to add a resistor in series with the CDS cell in order to make the unit less sensitive to ambient light.

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