Laser Trip Wire

Building a DIY Alarm System: The Concept So, you want to protect your property, or maybe a room, car, or even your backyard. The concept of an alarm system is to notify the "alarm administrator" that there is an intruder entering the previously designated boundaries. The trig ...more

Want to learn how to build a laser tripwire and alarm out of snap circuits? I'll show you how to build both circuits— the laser tripwire circuit and the alarm circuit. Video: . The alarm is a very simple two-transistor oscillator that is switched on by the relay in the laser t ...more

A cool use for wireless redstone in light of a previous video I made about Proximity detection. this version is very resource light and has the potential for a lot of different uses. To clarify, the proximity detection does not need all of the different uses that are availabl ...more

So I've been pretty busy with uni lately, but this was something I'd thought about a lot and I came up with a way to send an infinitely expandable chain of redstone with trip wires. Let me know what you think. Video: .

I love making beeps and bloops with the Arduino pitches library, but sometimes archaic 8-bit tunes just don't cut it. Whether you want your robot to terrify your enemies with a demonic synthetic voice, you just need a pocket boom box on the go, or you want to a miniature guita ...more

Greetings all. Today I intend to append a new series to my mini-collection of posts. This series will consist of informative guides for the purpose of depicting certain aspects of the White Hat profession that I believe are of profound importance. Furthermore, I will keep thi ...more

If you're a developer in the augmented and mixed reality space, there's a high probability that you're intimately familiar with the 3D application and game engine Unity. In May, at VisionSummit 2017, Microsoft announced that 91% of all HoloLens applications have been made with ...more

Who doesn't love Duck Hunt? It's arguably one of the most popular games ever created for the original NES system, even in spite of the mocking dog that everyone hates. I'm sure a lot of people still have their old controllers in the attic somewhere, so unless you're lucky enou ...more

Doorbells are a great idea. They let you know when someone who's not a burglar is trying to enter your house, apartment, or squat. They eliminate the need for lots of noisy yelling and startling door pounding. The one thing doorbells don't do is to let you know when someone f ...more

It's been proven over and over that you can make batteries out of fruits and vegetables such as lemons, potatoes, and even apples. Turns out, passion fruit is also acidic enough to power a battery, but Maui Makers member Ryan K decided to take it a step further by adding a las ...more

Smartphone gaming continues to improve with ever sharper displays and raw processing power to deliver console-quality graphics right in the palm of your hands. Nonetheless, you still stand to improve the gaming experience on any phone by adding the right accessories to the mix ...more

The Fog of Will Suki = a chink in the armor, a psychological weakness. Doubt. The trainee must believe in his or her ability to win in a life threatening situation. The trainee must begin to believe that he or she can and will survive a violent encounter because they’ll do w ...more

The use of unmanned aerial vehicles (UAVs) has been widely used by the military for surveillance and reconnaissance missions—even armed combat. But there are other beneficial applications of an unmanned aircraft, such as search and rescue operations, scientific exploration, lo ...more

By Camilla Cicconetti - Visit LifeStyleWebTV for more travel articles, videos, recipe demos and more. Located near the tip of the Brittany peninsula in northwestern France, Locronan is one of the region’s most spectacular villages. When you set foot on the cobblestone street ...more

What Is Ferrofluid? Ferrofluid is a black, solvent-based liquid, that, in the presence of a magnetic field, becomes strongly magnetized. The fluid is made up of nanomagnetic particles coated with an "anti-stick" or surfactant compound, suspended in a "carrier", commonly an or ...more

WonderHowTo is a how-to website made up of niche communities called Worlds, with topics ranging from Minecraft to science experiments to Scrabble and everything in-between. Check in every Wednesday evening for a roundup of user-run activities and how-to projects from the most ...more

Etching your own circuit boards is tons of fun, but etching requires strong chemicals to dissolve the copper plating on blank circuit boards. The normal ferric chloride solution works well, but can be expensive and leaves permanent stains. Luckily, we can whip up our own etcha ...more

WonderHowTo is made up of niche communities called Worlds. If you've yet to join one (or create your own), get a taste below of what's going on in the community. Check in every Wednesday for a roundup of new activities and projects. Thanks to all of our active moderators and ...more

WonderHowTo is made up of niche communities called Worlds. If you've yet to join one (or create your own), get a taste below of what's going on in the community. Check in every Wednesday for a roundup of new activities and projects. Thanks to all of our active moderators and ...more

The victim walks into a dark room and trips a wire on the floor. The lights will turn on and paintball guns pelt him with a ton of paint balls. After the guns run out a large bucket of paint is dumped on him.

At one point in the '90s, about fifty percent of the CDs produced worldwide had an AOL logo. About fifty percent of the CDs in my home still have that AOL promise of 500 free hours on them. Though they never got me to join their internet service, I did get a lifetime supply of ...more

Need a unique gift idea for the techy person in your life? Look no further than that phone they always have in their hand. There are plenty of great accessories, apps, subscriptions, and other smartphone-related goodies that will improve their quality of life, and thoughtful g ...more

Do you have an excess of wire clothes hangers from multiple trips to the dry cleaners? Rather than letting them take up space in your closet, you can use them for any number of things, from holding your necklaces and magazines to unclogging your sink and fishing dropped object ...more

The cord on your headphones is usually more enemy than friend. While they obviously need it to function, a tangled or unnecessarily long cord can wreak havoc on your sanity. Personally, I've broken at least two pairs of headphones by tripping over the cord and yanking the jack ...more

A long summer road trip brings opportunity for adventure, but also increases the chances for minor disasters including backseats that smell like stale French fries, getting lost in unfamiliar roads, and getting unexpectedly carsick. Minimize messiness in your car by turning y ...more

Message effects in iMessage lets you add a touch of flair to otherwise bland communications. With the feature, you can complement a birthday wish with a stream of balloons, send a congratulatory text along with a shower of confetti, or make the chat bubble slam itself in the t ...more

Take everyday sprinkler parts and form them into a high pressure rocket launcher that will shoot paper rockets nearly 300 feet!!! It's cheap to make and a lot of fun! Video: . A quick trip to nearly any hardware or sprinkler supply store should get you everything you need for ...more

Could your fever, body aches, cough, and sore throat be the flu? Soon, finding out may not involve a trip to the doctor. Right now, diagnosing the flu is something done at your doctor's office or hospital and involves a gag-inducing brushing inside your nose to collect cells ...more

The next frontier for AR hardware is the consumer headset, and tech companies of varying size and tenure are working hard to strike the right mix between comfort, cool factor, and cost. How these companies handle the hype and flow of information vary wildly. Magic Leap is not ...more

You can bet Thor costumes will be prominent among the superheroes seen this Oct. 31. Since the summer, there has been no shortage of coverage for Thor: Ragnarok, and the timing of its November release couldn't be better as a tie-in with the cosplaying holiday known as Hallowee ...more

The sun-drenched people of Phoenix can now sign up to ride in an automated car, for free, courtesy of Waymo. The Alphabet affiliate announced its "early ride program," which will (hopefully) demonstrate how self-driving cars will fit into people's everyday lives. Highlighting ...more

We are living in a golden age of craft beers. Originally invented by the ancient Egyptians, every culture now has its own tastes regarding beer. The process of making beer is so multi-faceted, it's a miracle that any gets made at all. However, there are lots of steps along th ...more

So, you're scanning the internet for some cool articles to read during your lunch break and you come across something pretty interesting—"The 50 Most Incredible Things Every Person with a Brain Should Know." That sounds interesting, so you click, and boom, you are hit with the ...more

Android phones have supported keyboards and mice for a long time, and you've even been able to use physical keyboards with iPhone and iPad models. But iOS 13 and iPadOS 13 finally include official mouse support. That means you can use a wireless or wired mouse and keyboard wit ...more

After months of back and forth, ZTE is finally making their return to the United States. The last phone the Chinese company released here was the Axon 7 Pro, a low priced flagship phone that competed well against the OnePlus 3 and 3T at the time. Its successor is the Axon 10 P ...more

Similar to last year, LG is mixing up its releases. Instead of the G series in the first half of the year and the V series in the second half, LG is releasing both heavy hitters together. However, unlike last year, this is a true upgrade from its predecessor, the LG V50 ThinQ ...more

After months of waiting, it looks like HMD has finally answered the call. Nokia's parent company is finally releasing a true flagship phone — one that isn't just an enhanced version of a previous phone and actually brings something new to the table. That phone is the Nokia 9 P ...more

Months before London-based Jonathan Moon would turn 30, he started musing over how to celebrate. While he had rung in past birthdays at home, he wanted to do something out of the ordinary as a farewell kiss to his twenties. A short ski vacation with friends felt like the perfe ...more

UPDATE: The OnePlus 8 Pro has been released! Check it out on the official OnePlus website or read through the rumored specs we've left below for posterity. Even though OnePlus no longer uses the motto, they still embody the spirit of "Flagship Killer." OnePlus is known for of ...more

If you had a phone in 2004, there's a pretty good chance it was a Motorola RAZR. The iconic phone is the tenth highest-selling of all time, and it marked the height of the flip phone era. Now that the technology has caught up, Lenovo (Motorola's parent company) is bringing it ...more

So you've been playing Call of Duty Mobile for some time but can't seem to get MVP at the end of the battle. Well, since the game is a competition of players and bots, you're in an uphill battle. But you don't have to languish at the bottom. With the help of these tips, you mi ...more

Motorola is a shell of its former self. In 2010, it had just released the Motorola Droid, a phone so popular it led to all Android phones being called "Droids" by non-techies. But there have been some rough years between then and now, and Motorola's latest "flagship" doesn't l ...more