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

By Brad Graham

Provide your folks and kinfolk the surprise in their lives! fifty one High-Tech functional Jokes for the Evil Genius has every thing you want to 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 kingdom of utter confusion round you! utilizing easy-to-find elements and instruments that every one Evil Geniuses can get their fingers on, those well-played but innocuous pranks will confound your unsuspecting ambitions at any time when. Plus, each device could be combined and paired, permitting you to create enormous quantities of bigger, much more twisted evil prank units! fifty one High-Tech sensible Jokes for the Evil Genius offers you:

• directions and plans for fifty one simple-to-advanced initiatives, whole with two 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 a few of the sensible jokes on

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

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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. After running to the door three or four times, your victim may wise up to the ruse and simply hang around to see what 26 The timing cycle is taken from pin 3 of the 555 and fed into the base of PNP transistor Q1 in order to trigger the relays electromagnetic coil.

Do not worry about the voltage and size of the solenoid, just make sure that the plunger can lift its own weight when it is placed on a table and connected to a fresh 9-volt battery. The larger the plunger, the louder the noise it will make when released, so keep this in mind if you have a few options to choose from. Your solenoid may also come with a plunger stopper or some type of linkage connected to the end of the plunger. You can remove all of this unnecessary hardware in order to allow the basic plunger to come free from the hole in the electromagnet’s center.

Two 4700 µF capacitors will create a 9400 µF capacitor, and this will really slow down the knocking repetition. While experimenting with the relay oscillation cycle, just remove the 1K resistor, R3 from the 555 pin, and place it to ground, rather than wait a minute for each timing cycle, and the relay will be constantly activated. Figure 2-14 shows the completed circuit board tested and ready for installation. Notice the massive size of the 4700 µF capacitor, C2; the larger the value, the larger the capacitor will Project 3—Ghost Door Knocker +9 V Q1 R1 R2 NC NO 555 timer R3 + D1 RY C2 NC + NO C1 D2 Gnd Q1: 2N3906 NPN D1: 1N4001 D2: 1N4001 Solenoid Gnd R1: 1M R2: 10K R3: 1K C1: 100 µF C2: 4700 µF RY: DPDT relay Figure 2-13 Ghost door knocker schematic Figure 2-14 Ghost door knocker circuit 27 Project 4—Putrid Stink Machine become, and mine is almost the same size as the battery.

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