Power Source Search Results

How To: Set Up the Meta 2 Head-Mounted Display

So after being teased last Christmas with an email promising that the Meta 2 was shipping, nearly a year later, we finally have one of the units that we ordered. Without a moment's hesitation, I tore the package open, set the device up, and started working with it.

How To: Restart Your iPhone in iOS 11 Without Using the Power Button

The new iOS 11 update provides an easy software-based solution to shut down your iPhone in case the power button, officially known as the Sleep/Wake button on all iPhone models except the iPhone X, goes bonkers. In addition to this, there's also a hidden setting that lets you instantly restart the device, and it's better than the "Bold Text" trick that's been around since iOS 7.

How To: Totally Maximize the Battery Life of Your Samsung Galaxy S4

The battery in the Samsung Galaxy S4 may pack 500 more milliamps per hour than the old S3 battery, but that doesn't necessarily mean more battery life. High-powered devices need lots of juice, and the S4 is definitely more powerful than its predecessor. The new battery can handle a third more in standby days, and over twice as much in talk time hours. But, when you live on your phone all day long, that means nothing. You're battery is still going to have a hard time keeping up with you.

How To: Build a Bomb-Defusing Robot Tank for the Revolution

War leaves a lot of stuff behind. Torn families, delegitimized institutions, mass graves, and unexploded ordinances litter the post occupation landscape. Whether or not you have driven the imperialist out, or are still in the phase of armed resistance, you will need the ability to safely diffuse bombs. My bomb defusing Silvia-bot can do it all. She can catch grasshoppers, cut wires, collect samples, tase enemies and even play chess! Materials

How To: Send Your Secret Spy Messages Wirelessly Through Light with This DIY Laser Audio Transmitter

Looking to transmit some super-secret audio communications to your other spy buddies? A laser is the perfect tool for getting your sounds heard from a small distance—without anyone intercepting them— even if it's just a cover of your favorite pop song. A laser audio transmitter uses light rather than radio waves to transmit sound. This is a much more secure way to send audio communications because the laser is a focused beam of light, whereas radio waves are not controlled, so they can be pic...

How To: Turn a Playing Card into a Super Simple Solar-Powered Battery Charger

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...

How To: Make glow sticks with DEP, TCPO, sodium acetate & dye

If you prefer glow sticks over candles during a power outage, then this how-to is for you! Although glow sticks are used as temporary light sources, there are other applications for them. Divers use them for night diving, fisherman use them to catch swordfish, and the military uses them for light markers, along with infrared versions used in conjunction with night vision devices. But with all these handy uses for glow sticks, the most popular is — recreational use, like dancing at raves, some...