Make an Electrical Shock Device

Looking to be the world's best violinist or fastest banjo player? If you didn't start practicing when you were a kid, learning a new stringed instrument is extremely challenging. But an upcoming device may change all of that, if you don't mind being shocked by 28 different ele ...more

I'm sure most everyone has some kind of fluorescent light source in their home; those long white tubes that emit a bright white light when turned on, or maybe a few of the CFL power-saver bulbs. These bulbs actually require very little "power" (i.e. a high voltage:almost no cu ...more

Congrats to WonderHowTo Jackass 3D prank contest winner Grayson Robison! His winning idea: Connect Knoxville to a real life Operation game with shocking devices. Every time a player screws up and the buzzer goes off, the "patient" gets a burning shock to the correlating body ...more

In the following video, I demonstrate how to create a device capable of charging the body of anyone who wears it with static electricity, allowing a powerful shock to be discharged into anything that is touched. This grants the wearer the ability to do some pretty amazing thin ...more

Clumsiness is the great equalizer when it comes to smartphones — it makes no distinction between the most expensive flagship handset and cheaper mid-range models. A hard drop onto pavement will usually result in a shattered screen, regardless of how pricey your device is. And ...more

A typical resistance spot welder can range in price from about $200-$800, but with a little resourcefulness and a bit of free time, you can make one like this for about $10 or less. Before starting on this project, there are a couple of videos you should check out, because yo ...more

Wall studs are both critical for maintaining the structure of your home and supporting items of weight and function on the interior walls (e.g. cabinets, shelves, plasma TVs, etc.). With wall studs playing such a critical role, consistently being able to find them is important ...more

Were you horrified when Gwyneth Paltrow's head ended up in a box in Se7en? Do you share Harrison Ford's opinion that Han Solo should have died in Return of the Jedi? Think Kurt Russell could have handled aliens better in The Thing? Well, sorry—you're out of luck. There's nothi ...more

What do you get when you mix water-filled bowls with electrical wiring and human hands? The answer may shock you. Artists Ion Furjanic & Isaac Souweine write, "Electric Tea 1.0 is the first in a series of works that put sound where it doesn't belong. [It] uses porcelain bowls, ...more

In this article, I'll show you how to built a Wireless Transfer of Energy Transmitter. Simply put, this device will send electricity to a florescent light bulb and light it up, from up to three feet. The idea originally (at least, prominently) came from Nikola Tesla (read more ...more

It's one of the most popular queries on the web, meaning the wet electronic disaster is likely a common mishap. There are many answers out there, but if you're lucky enough to have never googled it, pay attention now. You never know when you may drop your cell phone or iPod in ...more

Chemical engineers at Cornell have created a small device that may one day turn troops into real life spider-men. The device would cradle in the palm of the hand, allowing troops to scale walls. It uses an adhesive inspired by the Floridian leaf beetle, an insect that "can adh ...more

In this article, I'll be showing you how to make a simple yet effective static electricity generator. Basically, this device allows you to carry a constant static charge on your body and discharge it on anything grounded or of opposite polarity. The electricity generated is ar ...more

Put a remote controlled shock device in the seat of a car,have people go for a ride and shock the hell out them

A relay is an electrical component that works like a light switch, where it's turned on or off with an electrical signal. By connecting a relay to a Wi-Fi connected microcontroller like an ESP8266, you can build a connected switch that can be controlled from the web browser of ...more

The fact that this guide even exists is a downright shame, but that's neither here nor there. The truth of the matter is the iPhone 7 and 7 Plus don't have 3.5 mm headphone jacks, and since they use the Lightning connector to output audio, it's hard to charge your phone while ...more

When it comes to resistance to the elements, Samsung seems to believe in the old saying "if it ain't broke, don't fix it." They've carried over the IP68 rating under IEC 60529 that was first found on the S8 all the way to their tenth-anniversary flagship, the Galaxy S10. While ...more

Augmented reality is beginning to leak out into the mainstream world. This is thanks, in part, to ARKit and ARCore. These releases turned the current smartphones owned by millions of Apple and Android users into AR-capable machines. And while there are definitely some awesome ...more

In this project, you'll learn step by step how to modify a microwave oven transformer into a high-current device that can pump out 800 amps of electrical current, which is enough amperage to melt metal. If you liked the Metal Melter you saw in my previous project, here's how y ...more

They're finally here. Apple announced three new iPhone models at their "Gather Round" event in Cupertino, and they're all absolutely gorgeous phones. With bezel-less screens and polished titanium edges, the iPhone XS, XS Max, and XR are truly marvels of engineering — but perha ...more

Everyone seems to be talking about Elon Musk's new futuristic Tesla Cybertruck, the vehicle that either looks like a cool moon rover or an outlandish video game replica, depending on your tastes. That's why it's no surprise that early HoloLens 2 partner Trimble decided to joi ...more

Mixing water and electricity is extremely risky and potentially lethal, yet that's exactly what I did with the Scariac. In its simplest form, the Scariac is just a glorified version of two wires in a bucket of water, but it's actually one of the cheapest power controllers you ...more

In the case of Apple Watch v. Fitbit, the winner comes down to the judge at hand. Apple currently offers two smartwatches — the Series 5 and the Series 3 — while Fitbit offers three models — the Fitbit Versa 2, Fitbit Ionic, and Fitbit Versa Lite. Whatever your assumptions abo ...more

At the core of your Galaxy S5's hardware lies the central processing unit, or CPU for short. Practically every piece of data, every binary bit, has to pass through your CPU before it can be used to display a video or execute a game command. During times of heavy load, the CPU ...more

Everyone wants to know the optimal amount of time and energy for exercise. While estimates vary, Fit Relief helps you make maximize your workouts, whether you have 10 minutes or two hours. The FIT RELIEF Wearable Smart Device is a unique wearable that lets you customize the p ...more

After months of waiting, the iPhone 11 is here. At an event in Cupertino, Apple unveiled the iPhone 11, 11 Pro and 11 Pro max. You probably have a lot of questions after reviewing the specs sheet, including wanting to know more about the IP68 rating that all three phones have. ...more

As a former repair tech, I've heard the same reasons over and over as to why people opt not to purchase phone insurance. Some cite the cost—why pay extra every month for insurance when you're careful with your phone? Deductibles are expensive, so why not just spend that money ...more

The day has finally arrived — Samsung has unveiled the Galaxy S9 and S9+. Apart from minor upgrades, the two might not appear to be much different from last year's S8 and S8+, but that's not necessarily a bad thing. One feature that hasn't changed is the Galaxy's IP68 water-re ...more

In case you didn't catch the big event in Cupertino, Apple just unveiled two of the most cutting-edge phones ever made — the iPhone 8 and the iPhone X. Out of the many glorious specs that were rattled off on stage, one stands out for being just a little confusing: Both models ...more

A lot of my hacks use salvaged parts from an old microwave, with the microwave oven transformer (MOT) being the most useful component. In this "Quick Clip," I'll be using a MOT again (a dual MOT stack) to make deadly flame-looking electricity jumping around midair. This scien ...more

When security firm Zimperium discovered Android's biggest security risk in years, it sent shock waves through the ecosystem. As a result, Google, LG, and even Samsung decided to change the way they issue updates to their devices, by pledging to release monthly security patches ...more

Japan is in the process of curbing its aging population and mature workforce. According to The Diplomat, the country's population has been declining at a steady rate. To meet future productivity demands in commercial and industrial sectors, local officials are turning to self- ...more

Not to be outdone by Apple and it's new line of flagship phones, Google has followed suit and finally announced the followup to their highly regarded Pixel line of handsets — the aptly named Pixel 2. Thankfully, the tech giant has also joined in on the trend towards more durab ...more

Unfortunately, there are plenty of situations where having a can of pepper spray could come in handy. Even worse, in most of those situations your state of mind isn't really conducive to remembering important details like the facial features of the person who's trying to mug y ...more

The new USB Type-C standard was supposed to revolutionize smartphone charging, but so far, it's done more harm than good. Many cable and charger manufacturers are struggling to keep their products in line with the proper USB-C specifications, so as a result, we now have to che ...more

Wish your home wireless network was faster? You can always buy a signal booster, but if you'd rather not spend the money, here are a few tips and tricks to speed up your wireless connection, including how to make a homemade signal booster with things you probably already have ...more

According to a new study, the majority of smartphone users check their devices 150 times a day. While that number may seem incredibly high at first glance, the influx of notifications and amount of social media apps available reduce the initial shock and make the number seem n ...more

The cell phone may have replaced the pocket watch, but thanks to some clever mods and hacks, "old-fashioned" time telling is making a comeback. Smart watches that connect to your mobile device cannot only tell you what time it is, but also change the song you're listening to a ...more

In a previous project, I showed how to build an electrical Jacob's ladder using an old microwave oven transformer (MOT). In this project, I modified the secondary coil on the MOT, which converts it from a high voltage/low current device into a low voltage/high current metal me ...more

The Stun-Gun In this article, I'll show you how to make a small, weaponized highlighter. Before I get into how to built this device, let me warn you. This device is harmful! When used, it can cause burns and/or serious muscle spasms. The voltage is potentially deadly! DO NOT ...more

You're minding your business when your Apple Watch taps you. To your surprise, the watch claims your heart rate dipped abnormally low. The news might come as a shock — especially if you have no history of a heart condition — but before you panic, you should take the time to fu ...more

If we were to assign a theme for the 2019 edition of the Next Reality 30 (NR30), it might be something along the lines of, "What have you done for me lately?" Many of the top names in the industry from the 2018 edition remain the same, but their positions have shuffled. The p ...more

Last time, I showed how to start putting together an AC arc welder from scavenged microwave parts, focusing on the transformer modifications. Now, I'll show you how to finish up your DIY stick welding machine by fixing up the electrical system and performing the finishing touc ...more

The best part about April Fool's Day is that everyone is fair game. Even big tech companies like Google and Twitter get in on the action every year. It encourages even the most uptight, unfunny party-poopers among us to have a little fun driving each other crazy with pranks — ...more

Your Apple Watch sends you notifications from friends, family, and the apps that are important to you. Occasionally, however, the watch may scare the heck out of you with a notification warning of an abnormal, elevated heart rate. If you have no history of heart conditions, th ...more