Ready to play scientist? This video will show you how to make a cool electro magnet out of a 9 V battery, a 9 V battery connector and parts from a Nokia phone charger. Use a fully charged battery for stronger magnet. Then solder the two parts together and plug in your battery. And just like that you’ve created a powerful yet simple magnet. Try picking up different things and use different batteries to test the difference in strengths . See science can be a whole lot of fun. Put on some funky ...
Brian Padilla from Hilo Guitars demonstrates how to tune a ukulele without a tuner. To tune a ukulele without a tuner, first pluck the G string and compare it to the seventh fret of the C string and match the pitch. On the same C string drop down to the fourth fret and match the E string to it. Go to the fifth fret on the E string and match the A string to it. Make adjustments as necessary. If your tuner runs out of batteries or you're stranded in an area without electricity, use the fret mat...
This video by makemagazine demonstrates a weekend project on how to make a LED light brick. The materials required for this project are listed on the link to the make magazine page in the info box or it can be orders as a kit from the make magazine store. Take the PCB (printed circuit board) and first solder the Resisters and Capacitors as shown. Next test the LEDs and separate them using a button cell batteries. Solder the LED, PIC micro-controller, DC power connector and tilt switch followi...
Hak5 isn't your ordinary tech show. It's hacking in the old-school sense, covering everything from network security, open source and forensics, to DIY modding and the homebrew scene. Damn the warranties, it's time to Trust your Technolust. In this episode, see how to break down IP and TCP header with Wireshark.
This video will help you diagnose and troubleshoot on a basic level, your electric kit. I get asked alot "please fix my rc" and the main issue is that people do not understand how their rc works. While using a multimeter, I will show you how to diagnose battery batteries bars, esc, receiver, antenna, radio on crystals 2.4ghz synthesized modulation motor brushless bl brush less brushed transmission slipper gears pinions cvd dogbones dog bone wheels pins hex and other aspects that will not allo...
Let's face it—batteries are Apple's only real downfall when it comes to their products, and the iPhone is no exception. If you're constantly recharging your iPhone's battery, it's probably time for a replacement (battery, not iPhone).
Build a fire without matches or a lighter so you wont freeze to death or attract predators in the wild. The finer the steel wool, the better. Most batteries will work but 9 volt batteries are the easiest.
The best physics lecturer, Walter Lewin, makes another wonderful physics demonstration after having read a lecture on batteries.
Recycling your garbage is noble and, in many places, mandatory. But it also can be very confusing. This guide will clear up the rules.
There are plenty of jokes out there about the battery indicator on iPhones. Some people complain about their iPhones dying randomly at 11%, while others see hours of use at the 1% mark. Despite its inconsistencies, that battery percentage is a useful tell for how desperate you need a charger. There's just one problem: the icon is hiding on your iPhone 11, 11 Pro, or 11 Pro Max.
While last year's revelation that Apple slows down iPhones with aging batteries left a bad taste in users' mouths, the company's $29 battery replacement program was a step in the right direction. However, all good things must come to an end; Apple will soon shut down the program, leaving users to pay the full $79 to replace their faulty batteries.
After watching Samsung's exploding phone fiasco this past year, I took comfort knowing that the likelihood my iPhone would suddenly combust was slim. However, after hearing about a recent incident in Wisconsin, iPhone owners may have reason to worry.
When it comes to squeezing as much battery life as possible out of our smartphones, most people aim for software solutions, or ones that can otherwise be easily managed right from the touchscreen.
Attention all optometrists and ophthalmologists— there's a new tool in town, and it's called the Diaton Tonometer. Diaton's tonometer is an easy-to-use and accurate instrument for measuring intraocular pressure (IOP) through the eyelid, which makes it simple to diagnose patients with glaucoma during the early stages, so that immediate treatment and medicines can be administered. This transpalpebral tonometer is handheld, pen-like and no-contact, which provides absolutely no risk of infection....
In some places, it's illegal to ride your bike at night without lights or reflectors, so if you plan on going for a joyride on your street bike, then you need to be prepared to share the road with vehicles and be seen. Appropriate gear and lighting are essential for safety when riding a bike at night.
If your car has a dead battery, jumper cables can be used to connect to a car with a good battery to start your engine. Begin by positioning the two cars side-by-side, turn off the engines, and lift the hoods to access the batteries. First, attach the red cables to the positive terminals of each battery beginning with the dead battery. These terminals are usually marked with a plus sign or in red. Next, attach the black cable to the negative terminal of the good battery. The negative terminal...
This video shows how easy it is to jump start a car properly. Locating the car manual is the first thing to do. It will help for that particular car. Inspect the dead battery. If the battery is cracked or if the liquid inside of it is frozen, don't jump the cars. The battery could explode. Position the cars so that the batteries are as close as possible. Connect the positive cable (red) to the positive terminal (+) of the dead battery. Connect the other positive cable to the positive terminal...
With Tim Burton's revival of Alice in Wonderland, throw one of the hottest parties in town with a "mad tea party" themed party. Recreating one of Alice in Wonderland's most famous adventures is a great theme for all kinds of celebrations. Set the scene with these suggestions.
You may think you'll never be in an emergency situation, but you can never be too prepared! This video provides excellent tips on what to bring and do in an emergency situation.
Preserving the environment is not only the right thing to do—it can result in significant cost savings for your business.
Go thrifty! Go vintage! Go second hand. With the right approach and an open mind, a trip to your local thrift store can yield some fashionable bargains. Buying used is a smart solution to this economy, and gives you a smart sense of fashion.
Not everything at the dollar store is a bargain, or even safe to use. Learn to spot the difference between an item that's cheap, and a cheap item.
If even the bats are intimidated by the clutter in your attic, it’s time to tackle the mess. Watch this video to learn how to clean out your attic.
Starting in October, many Nexus 6P users have been experiencing a bug that causes their phone to completely shut down, even though there was 20% or more battery life remaining. At first, it was thought to be a direct result of the recent Android Nougat update, but a combination of factors indicate that this isn't necessarily the case—or, at least, it's not the only problem.
This is just a simple survival light source. You can use a cheap outdoor solar yard light like the one in the video from walmart. There only about 3 to 5 bucks but you can use them not only as a light source but a way to recharge AA rechargeable batteries.
You can do a lot more with playing cards than you'd think, like turn them into gift boxes, fling them like throwing stars, and make them levitate or disappear. You can even make them recharge your batteries. Instructables user Shawn Frayne was sick of having a bunch of dead batteries lying around, so he developed a cheap and easy way to always have a charged one within arm's reach by turning a normal playing card into a super simple solar-powered battery charger for rechargeable AA and AAA ba...
This is a very exciting time for mixed reality developers and fans alike. In 2017, we have seen a constant stream of new hardware and software releases hitting the virtual shelves. And while most of them have been in the form of developer kits, they bring with them hope and the potential promise of amazing things in the future.
Technology ages rapidly. We're conditioned to refresh our iPhones every one or two years, and why wouldn't we? New iPhones are fast, and our old ones inevitably slow down, sometimes to an unusable degree. However, it turns out, there's something we can do about that, and it doesn't involve buying a new iPhone at all.
Vuzix Corporation has lifted the preorder status on its M300 Smart Glasses, making the augmented reality device available for purchase by resellers, registered developers, enterprises, and consumers.
It turns out that the new Galaxy Samsung S8 Active (codenamed Cruiser) will be headed for AT&T in the US later this year, just like previous Active models. SamMobile revealed that the device would be exclusive to the network with a model number SM-G892A.
The Note7 fireworks bonanza was unprecedented in scope. A recent report suggests that Samsung could lose upwards of $20 billion in lost profit due to this fiasco.
Samsung makes some wonderful phones, but one thing I've noticed is that battery life can start to degrade over time, causing the phone to die a lot faster than it used to. If you've been experiencing this issue, and have asked yourself, "Why does my Galaxy S5 die so fast?" there are a few likely causes—and we've got you covered with troubleshooting tips and simple fixes below.
Need an electric outlet and don't have one? No batteries on hand, either? Well, then you should use the next best thing - potatoes! In this tutorial, learn how to make that old science fair staple - the potato powered calculator! Check it out, it really works!
Apple released iOS 13.0 on Sept. 19 and announced on the same day the release of iOS 13.1 on Sept. 30. But that deadline was pushed up to Sept. 24, and that's why we have 13.1 just five days after 13.0. But that's good news since we don't have to wait any longer for some of the features promised in iOS 13 that didn't make the first cut.
With iOS 12, Apple is making up for mistakes from the past, with iPhone batteries being no exception. The new update builds upon both battery health and performance throttling tools introduced in iOS 11.3 by offering users more information about your iPhone's battery usage than ever before.
If you've never heard of geocaching, it's kind of a grown-up treasure hunt you play everywhere in the world. GPS coordinates are given as clues and the players must find the cache box. There is usually a log book to write your name and a small toy or present to collect.
Apple AirTags are super helpful for keeping track of your keys, backpack, and other frequently misplaced items, but there are some pretty clever things you can do with them beyond finding your stuff.
Clumsiness is the great equalizer when it comes to smartphones — it makes no distinction between the most expensive flagship handset and cheaper mid-range models. A hard drop onto pavement will usually result in a shattered screen, regardless of how pricey your device is. And with a smartphone breaking every two seconds, we're truly our own handset's ultimate nemesis.
With portable devices being a necessity in modern everyday life, they may be subject to overuse, improper charging, or normal wear and tear. For those people who carry around their smartphone or iPod with them all of the time, how many times have you been out and about just to have your portable device die on you?
When your remote isn't working, it's hard to tell what's broken. Is it the remote, the think the remote's supposed to be controlling, or maybe even just the batteries? This quick and easy how-to will help your troubleshoot your remote. Follow along and learn how to check if a remote controller is still working.
