Make Led Grow Light

In the Harry Potter world, there was a character by the name of Beedle the Bard, who told a story about witnessing the three Peverell brothers building a bridge out of magic and successfully crossing a very dangerous river that had claimed many lives. Death was upset that the ...more

Samsung just announced the Galaxy S10 lineup, but we already knew each device's every nook and cranny. Thanks to leaks and hands-on demos, we know the OEM kept the coveted headphone jack, but omitted one treasured feature in its place — the notification LED. Why did Samsung st ...more

Using copper pennies (be sure they are older than 1983), lemon juice, paper towels and sandpaper, you can construct your own DIY battery that generates enough juice to light up an LED. The process is simple: simply sand down one side of a penny with sandpaper (be careful not ...more

Microcontrollers like ESP8266-based boards have built-in Wi-Fi, and that's really cool, but what's even cooler is that certain pro models of the D1 Mini also have a port where you can connect a directional antenna. This can give you exceptional range, but if you were to just p ...more

Mason jars are a DIYer's best friend, nearly on par with duct tape and paper clips. Why? Because you can use mason jars for so many things besides just canning and drinking, and I'm not talking about other obvious uses like basic storage containers or miniature terrariums. I'm ...more

Afraid of the dark? You're only afraid of things you can't see. Just like an owl, see through the darkness, light up your imagination, and use your own owl eyes to make your very own Halloween hoot. To make this owl, you'll need black foam board, an X-Acto knife, LED lights, b ...more

As dedicated bicyclists are well aware, riding can be very dangerous. Now that daylights savings time has ended in the United States, darkness appears quicker, and the night is especially dangerous for cyclists because of the low visibility that drivers have. Not only is darkn ...more

Your iPhone's Control Center is your main hub for quick access to controls like brightness, volume, Wi-Fi, and Do Not Disturb, but if you're using iOS 14, there may be a bunch of screen real estate taken up by blank squares. If that wasted space is bothering you every time you ...more

UPDATE NOVEMBER 2015: The root process has changed for the Nexus Player now that the device is running Android 6.0 Marhsmallow. I've updated this article with detailed instructions on the new root process, but the video below still depicts the old process for Android Lollipop ...more

There are over 1.6 million apps on the Google Play Store, which makes it the largest collection of mobile apps on the planet. However, a large portion of this total is occupied by apps with overlapping functions—think social media, news, weather, music players, and various oth ...more

The biggest win in the race for consumer augmented reality smartglasses to date belongs not to Apple, Facebook, or Google, but Snapchat's parent company, Snap. In an Apple-style "one more thing" moment during the Snap Partner Summit keynote on Thursday, CEO Evan Spiegel revea ...more

Smartphones and other Wi-Fi enabled devices send radio signals called probe frames to locate nearby wireless networks, which makes them easy to track by listening for their unique MAC address. To show how this kind of tracking works, we can program a NodeMCU in Arduino to snif ...more

Riding your bicycle at night is dangerous on busy streets, especially if you've got no bike lights. In most states, it's illegal to ride your bike at night without any lights because drivers on the road won't be able to see you until it's too late. Plus, how is anybody going t ...more

Last December, Google unceremoniously killed off Google Glass Explorer Edition with a final software update, leaving the Glass Enterprise Edition 2 as the only remaining AR wearable from Google. Now, Google is making it easier for enterprise customers and developers to acquir ...more

Before all the fancy night mode settings in phone cameras, we used the LED flash to take low-light photos. While it's not used for pictures as much anymore, the LED on the back of your Galaxy is still pretty handy as a flashlight. But did you know there's an easy way to adjust ...more

Looking for a way to make your bike stand out? You could light it up with LED rim lights or turn signals. Or if you're looking for something a little less flashy, you could make your own set of custom wooden handlebars like these by furniture designer David Moore. To actually ...more

Night vision goggles are awesome, but the price? Not so much. Luckily, you can make your own pair that will have you sneaking up on your friends in just a few simple steps. For this project, you'll need to get your hands on an infrared LED array, on/off switch, 9.6 volt batte ...more

The top five apps of the 2010s were all social media apps of some kind, and the fact that's not surprising to you says a lot. We may use them for other reasons here and there, but our phones are social media machines at their cores. The thing is, some make better machines than ...more

I obviously do a lot of Steampunk projects, but there are a ton of things out there that I haven't tried yet. So, in an effort to broaden my horizons, I recently taught myself how to use Arduinos, which I plan to incorporate into some of my future Steampunk builds. Since ther ...more

Hackers and makers are often grouped under the same label. While hackers draw on computer science skills to write programs and find bugs, makers use electrical engineering to create hardware prototypes from microprocessor boards like the Arduino. We'll exercise both sets of sk ...more

Chance are, you or someone you know is that person in the gym: flexing in front of a mirror, posing for the perfect photos to show off your workout results. But finding the right picture is hard. The thing is, it doesn't need to be. A good gym selfie or workout video doesn't ...more

Having the right air quality can turn a room into an atmosphere. With a humidifier, you can see your skin dewy and your sinuses clear. Proper temperature control will keep you comfortable and content, and the right air purifier will give you clean air and peace of mind. If you ...more

The holiday season is here! Whether you're gift shopping for the iPhone owners in your life or just trying to save some money on your own purchases, Black Friday can deal out the discounts. This year, you'll find great prices on iPhone accessories of all kinds — all Thanksgivi ...more

In the pursuit of large displays with thinner bezels, Samsung has sacrificed some components. While the loss of the headphone jack gets all the attention, there are other victims — namely, the notification LED. Once a staple on all Android phones, this small light would blink ...more

Night mode, which helps you snap great photographs in low-light environments, is a feature available only on the iPhone 11 and iPhone 12 lineups. It's a useful tool to have in your arsenal, especially if you're fond of nightlife photography. Still, you don't have to purchase a ...more

Smartphones have become such a big part of our lives these days that they're now closely associated with our personal identities. No longer is it Ford versus Chevy, rock versus rap, or PC versus Mac—now, you're either an Android person or an iOS person. Don't Miss: 10 Things ...more

Record stealthily, in the dark. This hack is simple and will turn any LED flashlight into an infrared night vision light you can use with any video camera. Infrared light is invisible to the human eye, but it will illuminate any area you are shooting. IR radiation is electrom ...more

A lot of people rely on the date on the packaging to tell them when food has gone bad, even with eggs, but the sell-by dates are often somewhat arbitrary and are not expiration dates. If you've been tossing your eggs based on the dates on your carton—you could be wasting perfe ...more

There are plenty of reasons to upgrade to the iPhone 12 mini. Maybe you want to take advantage of the improved camera system, or you're intrigued by the return to a smaller form factor. But one of its coolest features might be MagSafe, a completely different way to charge and ...more

The new iPhone 12 Pro Max is equipped with MagSafe, the iPhone 12 lineup's most talked-about feature. While Apple previously used MagSafe for its magnetic charging connectors on older MacBook models, it's given new life to it on the iPhone, and in a much better way. But can it ...more

If you're getting or already have a new iPhone 12 or 12 Pro, its big-ticket feature is MagSafe, something you'll definitely want to explore. While the technology is new to iPhone, Apple used the MagSafe name for its magnetic charging connectors on older MacBook models until US ...more

Smartphones are vital travel companions. While you're on the go, they connect you with loved ones back home, help you find tickets and passes for tourist attractions, and make it easy to find your way through foreign roads — but even the most powerful smartphone could use help ...more

Just hours after an early leak via Twitter, Facebook and Ray-Ban have officially released their new wearable collaboration. As we surmised, based on the leaked packaging, the device is called Stories. • Don't Miss: Facebook Ray-Ban Smartglasses Leak Reveals Fashionable Devic ...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

Besides obvious features like a touchscreen and biometric sensors, the modern smartphone comes with an array of state-of-the-art hardware in the form of various sensors that help your device sense the environment around it. And if you have a Samsung handset, chances are, you h ...more

Remember the magical LED graffiti video "paint"? Here's another cool LED graffiti design by Aissa Logerot. "Halo is a handy light-writing tool, preserving the techniques and gestures that graffiti artists use with spray cans. It is possible to change the color and the brightn ...more

Previously, if you missed a call or text on your old Samsung Galaxy S3, there was a white LED notification to let you know. It's a nice feature that most smartphones have, but wouldn't it have be nice to know what kind of notification it was before picking up the phone? Your ...more

With gas prices constantly digging into your wallet, biking will always be a cheap and easy alternative for getting around—and it's a perfect way to get in a little exercise. But with the fall season about a week away, it is going to start getting dark a lot earlier and that r ...more

HTC's Sense 6 has been out for over a month now with the One M8, and most of you have probably played around with its better known features, like the new Camera app and Harman Kardon audio. As great as those features are, there is still much more to be found underneath the su ...more

LIGHTFAKTOR is a Cologne artists collective experimenting with the "possibilities yielded by bulb (long-term) exposure and painting." The technique employed has been coined "light writing" - Wikipedia's definition: "Light writing is an emerging form of stop motion animation ...more

There are very, very few things better than a solid Hobbit songI mean, I was almost brought to tears when Pippin busted out this one in The Lord of the Rings: Return of the King. Video: . Seriously, if that was on iTunes, I would definitely throw down a buck for it. Oh wait, ...more

Surveillance is always a useful tool in a hacker's arsenal, whether deployed offensively or defensively. Watching targets yourself isn't always practical, and traditional surveillance camera systems can be costly, lacking in capabilities, or both. Today, we will use motionEyeO ...more

The next time a light bulb burns out in your house, don't throw it out. Believe it or not, burned out light bulbs aren't entirely useless. Besides creating an extra task on your to-do list, they can be hollowed out and used for a variety of different things from home decoratio ...more

Ringing and vibrating alerts on your smartphone can be a bit distracting when you're at work or school, but silent alerts can be a little too subtle if you want to know when you get a notification. Even the tiny LED alerts can be easily missed. So, is there's something in-betw ...more

Walking the streets at night can be uncomfortably dangerous. In 2010, there were 32,885 motor vehicle deaths in the United States. Of those, roughly 13%, or 4,280, were pedestrians. Two-thirds of those pedestrian deaths occurred at nighttime. Along with darkness, drivers also ...more

Fireworks are the best part about the Fourth of July and other celebrations, but they can easily cause accidental injuries. It's both safer and more fun to set them off remotely, so we'll hack some standard fireworks with nichrome wire, a relay, and an Arduino to ignite remote ...more

Like Russian Matryoshka dolls, the features on the Galaxy S8 and S8+ often have hidden components within them that add to their functionality. The phone's flashlight is a great example of this since there's a hidden shortcut within the "Flashlight" Quick Settings tile that let ...more

Our friends at Graffiti Research Lab were detained in Beijing over the weekend on charges of “upsetting public order”. Founder James Powderly and co. were detained while planning a Students for a Free Tibet protest using GRL light graffiti technology. GRL is an urban art col ...more

The original iPhone SE was, for some, the perfect iPhone. It brought back the popular one-handed form factor of the iPhone 5 but packed in the internals of the then-new iPhone 6S. Now, the second-generation iPhone SE is here for 2020, but can it live up to what made the first- ...more

While autonomous vehicles are almost assuredly the future of personal transportation, we are likely many years from seeing self-driving cars become as ubiquitous as manually-driven ones, as the auto industry has a myriad of government regulations and other constraints to conte ...more

While the Samsung Galaxy Note 2 has an integrated LED for notifications, it only works for a few things, like charging and low battery, and it only flashes two main colors (red and blue) when the screen's off. As someone that usually has their phone on silent or vibrate, it's ...more

It's truly amazing how far smartphone camera hardware has come in such a short period of time. It took roughly 5 years to advance the image processing capabilities from a pixelated mess to the crisp and clear photos we can take today. This reaches well beyond the megapixel spe ...more

Albert Einstein once said, "We know less than one thousandth of one percent of what nature has to reveal to us." While this still lies true, that fraction has inspired man since the beginning of human life. You can see the reflection of nature in the poems we read, the theatr ...more

Snapchat parent company Snap took a huge step towards the realm of smartglasses with the third iteration of its camera-equipped Spectacles sunglasses. What set Spectacles 3 apart from previous versions is that it gained a second temple-mounted camera, enabling it to capture d ...more

Just when you thought Google Glass was dead, it turns out there may be a second life for the often ridiculed device that won't relegate it to the staid confines of factories and repair jobs. In a patent application surfaced last week by Patently Apple, we now see that Google ...more

With the introduction of the Control Center in iOS 7, we finally had a way to access common system toggles like Wi-Fi, Airplane Mode, and best of all, Flashlight. Of course, there were plenty of adequate flashlight apps in the iOS App Store, but none that made it available str ...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

Though many were hoping for it, a notification indicator around the Galaxy S10's front camera punch hole never came to fruition. Since then, we've been finding other uses for the camera cutout, from turning it into a circular battery meter to using creative wallpapers. Thankfu ...more

We recently set out to find the best phones for people whose primary usage revolves around social media apps like Facebook and Instagram. Samsung, Apple, and Google were the three brands that made our top five, and while the latter only had one finalist, the two bigger OEMs ha ...more

Bradley Lewis is a visual effects artist for BioWare by day, but in his spare time he runs Slothfurnace, a blog dedicated to showcasing his incredibly realistic lightsaber replicas. His latest, which took 18 months to build, is Obi-Wan Kenobi's Reveal Lightsaber from A New Hop ...more