A few weeks ago, we saw a simple 128 inch DIY Projector Screen that looked like a pro built it—and it only cost $200. But this one is even cheaper, and looks just as good. It's also simpler because it's painted right onto the wall. In the video below, How To Lou shows us how to make it with just some white or silverscreen paint, a few pieces of casement molding, and some black velvet for the trim.
So you've made a somersaulting robot, one that delivers your beer, and even a robot you can ride, but you want to try out something really different. Why not add a steam engine?
Old newspapers come in handy for many different uses around the house, from birdcage liners to shipping cushioning and even a little fish cooking. But for backyard rocket scientists like Markus Bindhammer, they're more suitable as an ingredient for rocket propellant.
Windows users have been getting a lot of bad news about their security lately. First, we found out that passwords in Windows 7 and 8 can easily be exploited if password hints are enabled, and now, Russian password-cracking software developer Elcomsoft has found another huge vulnerability.
Christopher Nolan's Batman trilogy has been one of the most successful film series of all time, so it comes as no surprise that everyone wants their own real-life versions of the Dark Knight's gadgets and vehicles.
Remember going to the doctor when you were a kid? If the word 'traumatizing' comes to mind, you'll love the RoboDoc by MarkusB, a robotic doctor that makes checkups a little less scary (and a lot more fun) for kids. It all started when Markus took his 14-month-old daughter for a checkup. The finger clip that the doctor used to check her pulse terrified her, so Markus decided to build a heartbeat monitor just for kids that's much more likely to make them laugh than cry.
Anyone who does a lot of photography knows that the right exposure can make all the difference in the world. Taking a picture of something in motion requires a long exposure, so if you've ever wondered why your fireworks photos never quite turn out right, your shutter speed could be the key. Photographer David Johnson decided to put a twist on the classic long-exposure fireworks photo. Normally, when people take photos of fireworks displays, they just set a long exposure for somewhere over 3 ...
André Broessel of rawlemon has developed a solar energy generator that can use both sun and moonlight to create usable power. Oh... and it's gorgeous. The device is essentially a huge glass sphere filled with water that uses a ball lens to refract light in a way that increases energy efficiency by 35 percent. It's completely weatherproof and has an optical tracking device, meaning that it can be incorporated into architecture. Here's a concept design of how it could be used to power buildings...
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 laser. Passion fruit, or Lilikoi as it's called in Hawaii, is usually over-abundant in Maui, so Ryan decided to put it to good use. Using anodized bolts, copper pipe, wire, switches, and some LEDs, he built a battery that c...
If you're at all like me, you constantly get frustrated that repeaters only boost redstone signals in one direction. It's annoying!
Shooting a photo or video in a car can be rather difficult without a proper mount, and if you want to secure your camera outside the car, it can be just plain expensive. Luckily, there are tons of DIY camera mounts for both inside and outside your vehicle, and most of them are pretty cheap to make. Here are some of the best.
We've all played with bubbles as kids, but I think most would agree that they're not exactly the most functional of objects. An international team of researchers made up of Yoichi Ochiai, Alexis Oyama and Keisuke Toyoshima wants to change that. They've figured out how to project both 2D and 3D images onto a micro membrane (soap bubble) using ultrasonic sound waves and a standard projector. The bubble is made of a solution of sugar, glycerin, soap, surfactant, water and milk. The glycerin and ...
Motorola launched a new webpage on Friday that tells Android users how to unlock the bootloaders on a limited number of new Motorola smartphones and tablets. This new 'Unlock My Device' page helps demystify the process and make it easier for users to customize their phones.
If you've finished building your Curiosity rover and are wondering, now what? Perhaps it's time to move onto something a bit more... mobile?
Everything is documented these days, thanks to the Internet and mobile devices. Most people who own a smartphone use it to take lots of pictures. If you're one of those people, an app called Scoopshot can help you turn some of those photos into extra cash. Scoopshots lets you post your pics so that news organizations can pay you to use them. Companies can also post tasks, so if someone is looking for a particular photo in your area, you can accept the task, go take the photo, and earn money f...
In 1958, Patrick Flanagan invented the Neurophone, a device patented in 1962 that allows radio signals to be picked up by the human nervous system. The skin is the organ that receives the signal, converting it into a modulated molecular vibration, which the brain interprets into sound. Basically, it gives one the ability to 'hear' through the skin, making it sound like the audio you're hearing is actually in your head. It's kind of like having headphones in your brain. The only problem was th...
Dogs make great best friends, but anyone who's had one knows they can be the most high-maintenance friend you've ever had. Bathroom breaks, feeding schedules and walks are only the beginning. Even if you make your dog organic treats and teach it neat tricks, it still needs to play. And after that fifth game of fetch, your arm can get pretty tired.
Linux is generally a pretty stable OS, but occasionally things happen. However, as long as your keyboard has a SysRq key, you'll never need to worry about freezes again.
If you played with K'Nex as a kid (or still do), you know that it can take a lot of those tiny little pieces to build something. Just imagine how many it must have taken to make this full-sized, fully functional, coin-operated skeeball machine with a mechanical score counter. Instructables user Shadowman39 (aka Kyle) spent an entire year building this masterpiece. It's the same size as the ones you see in arcades, and it's coin operated, too. But don't try to feed it your pennies, it knows th...
Gerridae—you've probably seen these weird bugs gliding across the surface of the water when you're out swimming or fishing. These insects are commonly referred to as water striders, or more cleverly, Jesus bugs, for their ability to "walk on water". It's a pretty cool trick, but what could it do for science, right? Turns out, quite a bit. Photo by felixtsao
Stop me if you've heard this one before. A man walks into a bicycle shop, hears about a canoe made of cardboard and is inspired to make an awesome, fully-functional cardboard bicycle. Sound far-fetched? Wait until you hear how his guy actually did it. Israeli entrepreneur Izhar Gafni says that the idea for his method came from Japanese origami. Folding the cardboard increases its strength by 2-3 times, making the material much more durable. Essentially, he made the basic shape for each part w...
You probably already know that your digital pictures have quite a bit of information embedded in them. What you might not know is just how much personal information is included in that metadata, including your camera information, and in some cases, even the precise GPS coordinates of where you took the picture.
If you ride your bike at night frequently, you've probably had at least one close call with a car, pedestrian, or some other moving obstacle because of reduced visibility. Not only is it dangerous to ride at night without lights, it's illegal in a lot of places. Make sure no one can miss you with these DIY handlebar lights from Becky Stern at Adafruit. What You'll Need
Small containers are useful for many things. They're good for storing snacks if you have children, as well as holding coins or odds and ends. But those regular store-bought containers are lame—who wants to keep their stuff in a Tupperware dish or old butter container?
Helping to prove that science is way awesome, an 18-year old electrical engineering student has successfully made a light bulb float. His name is Chris Rieger, and he's been working on his "LevLight" project for about six months now, with pretty amazing results. This feat of ingenuity was accomplished by using magnetic levitation, although that over-simplification masks how considerably difficult this undertaking was.
Unless you're living in some weird parallel universe where plug-in light bulbs are the norm for household lighting, chances are you've had to unscrew a light bulb every now and then.
If you're ever lost in a survival situation, here's a little trick you're going to be so glad to know. Normally, we'd think of using water to put OUT a fire, but in this video I show you how I use water to START THEM.
Making cookies is one of the best things in life, especially around the holidays. There is nothing better than getting together with friends and family and bonding by baking cookies.
Yeah, it's not done yet! But it will be soon!!! I had an exam today and that was my last one so I will hopefully be done before I leave for Perth this weekend! :)
Bishoujo, in Japanese, literally means "beautiful young girl". Japanese culture uses this word to describe how young and pretty the girls of Japan are. And this anime and manga girl is quite the "Bishoujo". If you want to learn how to draw this Bishoujo character, it's really quite simple. DragoArt has this video tutorial on how to draw Bishoujo. Get more detailed instructions on the step-by-step cartoon drawing here.
In this nail art tutorial you will learn how to create a pretty pink nail design. You will need 23 Heaven by Sally Hansen Advanced Hard as Nails, French tips white nail polish by Sally Hansen Hard as Nails, fine and medium brushes.
Want to be the John (or Jane) D. Rockefeller of Restaurant City? Watch this video tutorial to learn how to hack Restaurant City with Cheat Engine 5.5 (02/04/10).
For anyone who lives in a space that may frown upon making holes in the walls, or for anyone who may not want to take on such a task, there's a simple alternative to hanging curtains or drapes. And the answer is brilliantly simple.
Whitewaterinstruction.com presents a lesson on Paddle Awareness by Shane Benedict.
Have an old bike combination lock that you can't remember the code for? If it's a simply four-digit cable lock, you can easily figure out the combination with a quick peck-and-go method. Best of all, this technique doesn't require any tools or special know-how, and let's you reuse the cable lock again versus just damaging it with bolt cutters. All you need is a bit of patience and you'll have your figure out your combo in no time.
Check out this video for a step by step tutorial on how to perform the very cool hitchhiker stunt on your BMX bike. In this clip, Rad Dad shows you how to combine a bunch of different tricks into one - the hitchhiker! This is a pretty advanced move so you will need to be familiar with steamrollers, double footed steamrollers, half hikers and karl kruisers.
These days, the only thing your eyes view more than your phone's home screen is the backside of your eyelids. So it goes without saying that whatever picture you have as your background gets old pretty fast.
The worlds of augmented reality and virtual reality are closely linked in many ways. That means it's smart for AR insiders to keep a close on new developments in VR. If you have been paying attention, you know that Oculus CTO John Carmack is one one of the most important thinkers in the VR space.
One of the standout features of the OnePlus 7 Pro is the 90 Hz display. A higher refresh rate means smoother gameplay for all your favorite games, which is precisely what you'd want out of your gaming experience. However, not all games play nicely with these higher refresh rates — but luckily, there's a pretty simple fix.
The idea of squeezing your phone might have sounded a bit out there when it was new, but it's now a hallmark feature on Pixel devices. As useful as it is for summoning the Google Assistant, however, it certainly would be nice to be able pick and choose what action is triggered by squeezing the phone. Well, now you can.
