Connect Speaker Wire

Welcome to Minecraft World! Check out our advanced tutorials and come play on our free server. For last week's Workshop, we decided to attempt to communicate long distance without the use of the chat bar. To accomplish this, we built an elementary redstone pulser that would a ...more

Welcome to Minecraft World! Check out our advanced tutorials and come play on our free server. A Minecraft house can have little else cooler than a hidden door. Indeed nothing quite screams accomplished potion master like a hidden lab behind a retractable bookcase. With the a ...more

Fans of Doctor Who know that the sonic screwdriver is the ultimate tool. It can unlock doors, turn on lights, detect life forms, solder wires, and sabotage weapons. Presumably, the sonic screwdriver creates sonic vibrations to achieve whatever the doctor wants by vibrating th ...more

Instructable user samsmith17's solution for riding in the dark is a lot snazzier than your typical bicycle light: "This summer I realized that you don’t need a driver to run your el wire if you’re putting it on a bike. I hooked a stepper motor up to a transformer from an old ...more

Welcome to Minecraft World! Check out our advanced tutorials and come play on our free server. There are many amazing redstone builds, but probably the pinnacle of redstone technology is the redstone calculator. The ability to turn simple game mechanics into a real-life calcu ...more

Redstone and electricity have much in common. They both have what's called resistance. That is, they only travel a certain distance before the signal degrades to the point where it's unusable, and they take a certain amount of time to get there. With electricity, that time is ...more

Sometimes a simple drowning trap is too boring, and you want something that's a little more stylish and exciting. That's where this trap comes in! This is what I like to call "The Mangler". It consists of a set of pistons that chomp together, literally chewing up your enemies ...more

The agents of empire do not always arrive with warning. When you are besieged, surrounded, and infiltrated, imagination is often your best weapon against the oppressors. If all you have at hand is some duct tape and a disposable camera, fear not, you have the makings of a powe ...more

In this article, I'll be showing you how to make a cool visual representation of sound using an old cathode ray tube (CRT) television, a stereo, and a sound source. You'll also need a pair of wire cutters, and a few screwdrivers. To properly understand this project, it's a goo ...more

In mathematics, a knot is a closed circle in a three-dimensional space that crosses itself multiple times. Since it is closed, it has no ends to tie, meaning you can't actually create such a knot. However, if you tie the ends together after you create a knot in the standard wa ...more

Welcome to Minecraft World! Check out our advanced tutorials and come play on our free server. Real time redstone clocks are a marvel of redstone technology. Not only can they keep track of time, they are capable of powering other more complicated redstone machines. Regardles ...more

This is the cheapest device to gather interviews as a small, easy-to-carry recorder. I started to use it for preproduction and film documentation after I bought it in a Polish discount shop for about 100 Euro. The only problem was very poor sound quality. I decided to mod the ...more

Computer viruses are terrifying. They are undetectable, dangerous, and operate constantly right under your nose. For the average computer user, there are only a few repair options. You could buy expensive antivirus software that causes more problems than it fixes, you can wipe ...more

Whether you're in an airport, restaurant or waiting room, the insidious grip of televisions on human life is omnipresent. Sometimes it's nice to talk to other human beings while looking at them directly—actually hearing what they have to say. Thankfully, there's a DIY device ...more

Just about every household gadget we own runs on 1.5 volt batteries of one size or another. Wouldn't it be great if you could reuse all of those dead AA, AAA, and D batteries after they've passed on? It turns out you can make a simple circuit called a "Joule Thief" to reanimat ...more

Torus knots are beautiful knots formed by wrapping a line around a torus and tying the ends together to form a loop. The resulting knot has a star-like appearance when viewed from above. The 36 examples with the least number of crossings can be seen at the Knot Atlas's page on ...more

Age doesn't matter in the world of programming, only skills, and recent high school grad Jack Eisenmann definitely has them. He recently built a homebrew 8-bit computer from scratch, calling it the DUO Adept. A worn television makes up the monitor and speaker system, an old ke ...more

Science-fiction writer Jules Verne predicted many scientific breakthroughs, including the moon landing, tasers, and nuclear submarines. In his 1874 book The Mysterious Island, Verne writes: I believe that water will one day be employed as fuel, that hydrogen and oxygen which ...more

Keyloggers are a must-have tool in your arsenal. Hardware keyloggers have the advantage of being undetectable through anti-virus or other protection programs. They also capture keystrokes before the OS even boots up, so they are pretty handy tools. The only issue with these t ...more

This article details the step-by-step instructions on how you can make a strawberry tower that can be used for your hydroponics/aquaponics system. The water dripping through the system contains the nutrients, so soil is not used. The growing media is expanded shale, but you co ...more

We've already done a tutorial explaining why buttons are superior to levers, but now I want to show you a way to make them even more useful than they already are. You can't get this sort of functionality with levers! A button only emits a one-second (or so) pulse of power. We ...more

Hotly contested video. The question remains, is the science behind the potato fire bonafide or bogus? We have yet to try it over here at WonderHowTo, and the comments thus far haven't indicated a solid verdict. Try it out and let us know! Is this a hoax? Or can you truly start ...more

While hackers know and love the Raspberry Pi, many don't know of its cheaper cousin, the microcontroller. Unlike a Pi, which can be used more or less like a regular computer, microcontrollers like the Wi-Fi connected ESP8266 require some necessary programming skill to master. ...more

Back in 2008, media artist Kyle McDonald created a 3D interface that could track movement, which he turned into a virtual Tic-tac-toe game. Video: . In this tutorial, MAKE teaches us how to build one at home using cardboard, aluminum foil, an Arduino, and some basic parts from ...more

There's a lot that goes into making a nice crystal radio set, so this is going to have to be broken down into two parts. The first part is the actual making of a functional radio, and the second part is making the whole arrangement look nice. In this part, I'm actually going t ...more

There's no doubt you've heard the old saying, "When life gives you lemons, make lemonade." The phrase was penned in an obituary to a dwarf actor in 1915 by an anarchist named Elbert Hubbard, who lost his life five months later aboard the RMS Lusitania when it was torpedoed by ...more

Video: . This video will show you how to connect the positive and ground wire on the battery of your RV or camping trailer. There will be a red and a black or white wire for the ground, we'll show you how to hook everything up to get you up running.

One of the coolest features of the Samsung Galaxy S4 is Group Play, which lets you connect other Samsung Galaxy S4s up to yours so you can use them as extra speakers to create a surround-sound stereo of sorts. While the feature is definitely cool, there is a downside. It can ...more

The Galaxy Note 20 series has one of the largest screens on any smartphone. Such a massive display not only makes it easy to enjoy videos, but it also makes split-screen mode more viable, as each half of the screen is large enough to enjoy the content — including two different ...more

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 trick in the video is that the magnets are made of a conducting material and they connect the battery terminals to the copper wire, so the battery, magnets and copper wire make a circuit that generates a magnet field just in the vicinity of the battery. The geometry means ...more

I love robots. They have the potential to evolve into Asimovian destroyers of the human species, but have only just mastered the art of cleaning my rug. They have an ever increasing cool factor and a growing number of cheap and simple components that let the hobby roboticist r ...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

Relays are simple redstone devices that allow you to switch between multiple outputs with only one input. They're incredibly useful in the right situation! There are many different types of relays, but I'll be showing you how to make two. One will switch power back and forth ...more

Many of us rely on our smartphones for all our media needs. Now more than ever, we're using Bluetooth connections to play audio over speakers, headphones, car sound systems — the list goes on. If you own a Samsung smartphone like the Galaxy S9, there are a number of Bluetooth ...more

Pyrit is one of the most powerful WPA/WPA2 cracking tools in a hacker's arsenal, with the ability to benchmark a computer's CPU speeds, analyze capture files for crackable handshakes, and even tap into GPU password-cracking power. To demonstrate how quickly it can hack a WPA/W ...more

If you're ever lost or hurt out in the middle of nowhere with a dead cell phone, you might be able to "flag" down help as long as you're near some railroad tracks. Some train tracks carry a small electric charge as a means of detecting other trains for signaling or for detect ...more

Okay, you can't really become the king of the world by stacking three pistons. For that, you have to stack four pistons. Seriously though, stacking pistons is an incredibly useful thing to know how to do, and it can be used to make invisible doors, hidden staircases, portcull ...more

I don't like paying for repairs, and I don't like purchasing extended warranties. When one of my gadgets break, I perform emergency surgery and try and fix it myself. It doesn't always go well, but I've managed to resuscitate a few iPhones, an HDTV, an Android tablet, multiple ...more

Google first introduced Google Home, its latest smart product in the works, at the company's I/O conference in May 2016. It will directly compete against Amazon's Echo, which has so far been a success with over 3 million devices sold, and it was even featured as FBI Agent Dom' ...more

One thing the whole Internet can agree with is that cats are cute and (sometimes) cuddly. But what those endless cat videos you find yourself watching for hours on YouTube don't tell you is that cats stink. While cats aren't the source of the smell, owning a cat means a stinky ...more

Omniscience is not required to make some really cool shit happen. Yes, it took a while, but we can make fuel from the Sun! Solar panels are basically our answer to God. And now that we can make solar electricity, finding the most efficient way to harvest it is tricky. Some so ...more