How to Make Led

Samsung created quite a buzz when it debuted a built-in heart rate sensor on the Galaxy S5 back in 2014, but amazingly, not many other manufacturers decided to follow suit. It's really a shame, too, since data from a heart rate sensor would go perfectly hand in hand with the i ...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

Apple just released its biggest update to iOS 17 yet, and there are 60 exciting new changes for your iPhone. With iOS 17.2, you get a brand new app, more Apple Music enhancements, upgrades in Messages, and a new security feature that was announced last year, as well as changes ...more

The notification light on phones and tablets is slowly disappearing. The once staple feature is now only found on a few devices, and a bevy of other notification systems have sought to fill the gap. The most popular of these systems is Ambient Display, which has grown in popul ...more

Apple's iOS 16.3 update for iPhone had impressive new features, but iOS 16.4 might impress you even more. The latest iPhone update was released on Monday, March 27 — a day earlier than Apple Music Classical, Apple's new classical music streaming service — has at least 30 more ...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

An invaluable button on your iPhone can do hundreds, even thousands, of amazing things, but most iPhone users don't even know it exists. You can't push it. You can't click it. You can't press it. But it's the largest button on your iPhone, more powerful than the versatile Side ...more

Samy Kamkar, the security researcher known for the MySpace Worm and his combination lock cracking skills (using an online calculator), is back—and this time, he's after your credit cards! Well, not really, but his latest project, dubbed MagSpoof, can spoof any magnetic stripe ...more

Everything you post on social media lives there forever — even if you delete it. Just ask anyone that's ever posted something stupid. Instagram does not provide built-in tools to save or download images and videos from other users, but there are workarounds. Third-party tools ...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

Rooting your phone is one thing, but to truly be in control of your device, you need to be S-Off. S-Off allows you to flash, mod, and tweak just about any aspect of your phone, including the ability to run custom recoveries and flash kernels, which are vital tools for power-u ...more

I'm an Android user. Over the course of the past seven years, I've owned ten different smartphones—all of them powered by Android. This isn't due to some blind trust in Google or some unfounded hate for Apple, either, because I've always made sure to get my hands on each iPhon ...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

To combat their poor coverage in rural areas, T-Mobile spent nearly $8 billion on 600 MHz spectrum in 2017, which was converted to LTE Band 71. With such a low frequency, the signal can travel further, providing LTE speeds to more Americans. But your phone also has to support ...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

Making your own circuit boards can be a daunting challenge. You have to design a schematic, test it on a breadboard, design the board layout, and then after all of that, you still have to print and etch a board! Luckily, we have Fritzing. Fritzing is a free open-source PCB d ...more

After an update on Sept. 22, 2020, the Checkra1n jailbreaking tool expanded its compatibility to include iOS 12.0 to iOS 12.2, as well as iOS 13.5.1 to iOS 13.7. More importantly, however, it now can jailbreak iOS 14 on select iPhone models, with more support coming soon. The ...more

The Galaxy S8 has finally touched down, and it's an absolutely gorgeous device. Samsung's brand new flagship comes jam-packed with new features — some refined, and some that aren't. Luckily, we've compiled some major features to help you get started as quickly as possible so y ...more

Group chats on WhatsApp are great for getting your friends all in one place, but the bigger the group, the more notifications you'll probably get. Needless to say, it can get annoying real quick. You can mute notifications for all your conversations, but that's not practical i ...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

The camera situation on the all new HTC One is a little daunting. The M8 has not one, not two, but three camera lenses built in. First, there's the 5 megapixel selfie machine up front, then around back, there's the new Duo Camera with a refined UltraPixel sensor. HTC has done ...more

There was a somewhat recent outbreak of malware on Android, and it came from an unlikely source—the Google Play Store. Several established apps have received updates a few months ago that contained an unwanted add-on called either DU Quick Charge, DU Battery Boost, DU Boost Ch ...more

With only a few days left until Halloween, your options might be rather limited if you still don't have a costume. You may have laughed while some people spent the entire month of October painstakingly crafting their ridiculously detailed costumes, but now that the big day is ...more

Video: . Recycle your hard drive into a hidden flash memory device that only you know how to turn on and use in secret. This DIY hack project allows you to recycle your broken hard drives back to life and turn them into something useful. So far, this project has several funct ...more

Microcontrollers are great. You can do anything from water your garden to catch wildlife trash diggers in the act—and on the cheap. I prefer to use the Arduino microcontroller because of the large and helpful community built around the website. Though it is my favorite, there ...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

Apple revealed the new iPhone 6S and 6S Plus at their September 9th event, and there are two particularly awesome features built in just for selfie photogs. The first is 3D Touch, which gives you a quick shortcut to taking selfies just by pressing the screen in a certain way. ...more

Tossing an old Android smartphone with a decent battery into your hacking kit can let you quickly map hundreds of vulnerable networks in your area just by walking or driving by them. The practice of wardriving uses a Wi-Fi network card and GPS receiver to stealthily discover a ...more

The concept and structure of Christmas hasn't changed much since its inception. In its infancy, Christians recruited Roman pagans by associating Christmas with the Saturnalia, an ancient Roman festival in honor of the deity Saturn (also held in December). The pagans had long w ...more

The idea of a perfect phone is a myth. There are lots of pros when it comes to OnePlus devices, but there are also a few things that could be better. And even if there were a phone without flaw, there are still things that you might want to customize for personal preference. T ...more

There are a lot of things your Samsung Galaxy Note 2 can do straight out of the box, but there's also a ton of things it can't, or simply could be better at. That's why most of us end up rooting—to enhance the mobile experience. Today, I'll be showing you some of my favorite ...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

Solar panels are an amazing invention. Catching energy from the Sun before it even enters Earth's food chain, photovoltaics are like an all-natural nuclear power plant. Unfortunately, the constituted parts of a solar panel are rare, valuable, and subject to the coercive forces ...more

When shooting video on your phone, you have two cameras at your disposal, the rear camera and the selfie camera, and you can switch freely between the two. As for microphones, you may have more than one but, unlike with the cameras, it's not easy to switch between them. Filmic ...more

Pressing the button on a video game controller quickly is like running the 100 meter dash. Both require dedication and a precise exercise regime. There is also an odd quality about both in which the range between the very best and complete neophyte is tiny. Sprinter Usain Bolt ...more

The Operative Framework is a powerful Python-based open-source intelligence (OSINT) tool that can be used to find domains registered by the same email address, as well as many other investigative functions. This reconnaissance tool provides insight about your target through ex ...more

The Nexus 6 uses an Ambient Display notification system that was heavily inspired by the Active Display feature on the Moto X. Essentially, the device shows a black-and-white version of the lock screen whenever you receive a new notification or pick the phone up. This is all m ...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

You may already know that you can build a functional circuit on a sheet of paper with the graphite from a pencil, but you'd probably never think of using it to fix an electronic device. This same principle can be used to bring back a bricked phone, but can also repair a damage ...more

When you forget you charger,you can use this dynamo charger to charge the phone with your hand. I convert the dynamo LED flashlight into charger just adding bridge rectifier, capacitor and USB female plug. Video: . Make sure you subscribe to my YouTube channel for more awesome ...more

The iPhone's "Accessibility" menu is one of those options that's very easy to overlook but incredibly handy in certain situations. You can set AssistiveTouch to help navigate your device, use a Bluetooth mouse when your screen is acting up, and enable the red screen filter for ...more

If you're new to Android phones, one of the first things you've probably noticed is how notification alerts differs from Apple devices, especially in regards to getting a text message. When you receive a text on an iPhone, the display turns on and shows you a popup notificati ...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

Thanks to its advanced cameras, the Galaxy S9 can capture videos at an astonishing 960 frames per second (fps). To put it in perspective, you now have you the ability to record the world around you in ways that previously required expensive professional camera equipment. And t ...more

If you're tired of fumbling with the Control Center every time you need to turn off your iPhone's LED flashlight, you'll be happy to know there's a faster way. Using a simple trick that was discovered by Redditor 49599066, you can actually toggle your flashlight off in less th ...more

Just installed the new iOS 5 on your iPad, iPhone or iPod touch? There's a lot of great features to check out and play around with. After messing around with it on my iPhone 4 for a few minutes, these seven additions caught my attention. Check them out below—and tell us what y ...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

Here's a routine that I'm sure all of us smartphone users go through at least several times a day. You notice your Samsung Galaxy S4's notification LED blinking, grab your phone to see what it is, and enter your PIN. Only instead of anything important, you find that it's just ...more

Foodborne infections often occur through the contamination of equipment, food-prep tools, and unsanitary surfaces. A recent report from the Centers for Disease Control and Prevention (CDC) reminds us that breast pump parts are part of the food-delivery chain — and they can bec ...more

Since most devices these days are mobile and wireless, a lot of people have a bunch of old hardware from a decade or two ago sitting around unused, just wasting away in dusty boxes. Look familiar? If you have an old mouse (or several) lying around, you can turn it into a wire ...more

Many people drink green tea for health reasons, and it's no wonder. This beverage is a superstar when it comes to antioxidant levels, and is being studied for its potentially curative properties on multiple health concerns, whether it's staving off the aging process or fightin ...more

One of the more enjoyable parts of Christmas (other than opening gifts of course) is going out to find the perfect tree, struggle bringing it into the house, and decorating it. As the years went by, I realized that our tree looked exactly like every other tree in the neighborh ...more

With protests springing up across America, there's a chance you may have your first interaction with law enforcement. Many demonstrators will have their phones in-hand to film the action, which, sadly, could prompt an officer to demand the device and any self-incriminating dat ...more

There's absolutely no shortage of flashlight apps on Google Play, so when one comes around that sports uniquely different features than the rest—it should definitely be noted. That's why I bring to you Ambient LED Flashlight, a new app for your Samsung Galaxy Note 2 by Android ...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