Hacks Mods & Circuitry: Page 4

Direct current (DC) by definition flows in one direction. Alternating current (AC), on the other hand, periodically changes direction, or reverses polarity. It is indeed possible for a portion of a circuit that is normally DC to periodically change direction, or reverse polarity like an AC circuit.

Obviously, millionaires like me don't really have to worry about an empty wallet, but for the rest of you out there, having no cash when it comes time to paying a bill can be excruciatingly embarrassing.

This video covers the basics of the Arduino and the breadboard.For the code:http://www.mikepieters.com/codes/basicsI.ino

LEDs have slowly become the standard for DIY lighting projects because they consume less power and last way longer than regular light bulbs do. Light-emitting diodes have no filament, meaning they generate their light solely by the movement of electrons in a semiconductor material.

i have a dave smith mopho keyboard and i hate that i have to plug it in to a wall to get it to cut on. would rather just use the usb and connect to my laptop. so i can travel and make music while im mobile. does anyone know how or any videos on modifying keyboards to run off of batteries. rechargeable batteries

Does anyone know anything about PCB cloning?Means that circuit board hardware and software will be copied to make a circuit diagram, SCH, the MCU code program, and copied to the production.So you only need to provide a sample to be able to change a lot of the same products?

In this project, you'll learn how to re-purpose low-cost sprinkler parts into a high-powered CANDY CANNON. Be the coolest person on the block by building a pneumatic device that will launch candy 100 feet in the air—you can make it rain down all kinds of sugary treats!!!

Hello! This post is about the electrical socket. Imagine that somebody pulled the cable out of the possible protection outlet too fast? The result can be seen on the following photo. What to do next?

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.

In this tutorial, I'll show you how to use the Arduino to control lights with your own voice!

There is thousands of motor driver, do you find an easy way to measure the drive current? That is what this motor shield do. The drive chip is L298N. The following steps is how to control two DC motors and how to measure the drive current. With it, you will make your control system more smart.

Thanks to its open-source platform and easy-to-use hardware and software, there's literally thousands of Arduino projects detailed online for anyone to make—a magic mirror, DIY polygraph machine, and hotel-hacking dry erase marker just being a few examples.

If you ride your bike or motorcycle a lot, especially in a large city, you've probably had a few close calls. No matter how safely you're driving, you never know what other people are going to do, and being on a smaller vehicle makes you difficult to see.

Have you ever fallen asleep watching television only to be rudely awoken by one of those obnoxious commercials that randomly play three times as loud as everything else? While the FCC actually made excessively loud commercials illegal as of last December, it's up to providers to comply, so the problem will probably take a while to go away.

The cell phone has come a long way. The very first "mobile devices" were made and used by the military in the late 1930s, with the first commercial mobile telephone service introduced by Bell in 1946. These devices were hardly what we'd call mobile today—some took up the whole trunk of a car, and others had to be carried on your back in a heavy bag.

Babies are pretty cool. They do whatever they want, have beautiful women drool all over them, and have more one-on-one boob action than any grown man (or woman) I know.

Cassette tapes, much like the boombox, Walkman, and record player, aren't used much anymore. With the ability to put music on our smartphones, most of us don't carry tapes or CDs around because it now seems inconvenient.

Do you guys remember those things you hold with your fingers to write stuff down? I think they're called pens, or something like that...

The first alarm clock in recorded history can be traced back to ancient Greek philosopher Plato, known for laying the foundations of Western philosophy and science. Plato was said to possess a very large water clock with an alarm signal similar to that of a water organ.

Unfortunately, there are plenty of situations where having a can of pepper spray could come in handy. Even worse, in most of those situations your state of mind isn't really conducive to remembering important details like the facial features of the person who's trying to mug you, which means the police will have a harder time catching the culprit.

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.

You can take macro photos on a huge variety of devices, whether you're using a DSLR with expensive lenses or just your iPhone (or any smartphone, for that matter). One common issue, though, is that it can be hard to get the image as crisp as you want because the depth of field is so small.

You can make Siri do all kinds of things it was never designed to do. From installing it on older jailbroken iDevices to using it to bypass an iPhone's lock screen, people have managed to come up with some interesting hacks—and that's only the beginning.

Albert Einstein once said, "We know less than one thousandth of one percent of what nature has to reveal to us."

Since the introduction of the Nexus 4 to the Google Play Store last November, the phone's been in constant demand thanks to the low price and sleek design. Even today, the phone is still listed as sold out.

If you've got old game consoles lying around and aren't sure what to do with them, there's no shortage of projects you can undertake. From turning a Game Boy and Wii Remote into an Android phone gamepad to combining a GameCube and N64 to make a hybrid console, there's something for everyone.

If you're like me (and everybody else probably), you probably have a few nights of reckless drinking that you wish your could take back, or at least turn down a notch.

Over the last few months I have been getting more and more into computers over the last few months, and I discovered my new favorite thing to do..... notepad stuff!

At night, it can be pretty difficult to see what's inside drawers and cabinets, unless you have night vision or something.

Take everyday sprinkler parts and form them into a high pressure rocket launcher that will shoot paper rockets nearly 300 feet!!! It's cheap to make and a lot of fun!

Last week, the whole world ushered in the new year, celebrating the start of 2013 with family and friends, and of course, that little thing we like to call alcohol. But just because New Years Day is over doesn't mean the party is.

Growing up, my family would get together in the living room every Saturday night and gather around my mom's old boombox radio and listen to Disco Saturday Night on 104.3 FM from 6 p.m. to 2 a.m. (the show ended in 2008 after 14 years of consecutive shows). The old ladies in the picture below are the best representation of these nights that I could find.

There are tons of remote controlled cars and boats out there that you can buy or build, and you can add remote control functionality to almost anything. But if you really want to stand out, there are few things more attention-grabbing than this radio-controlled watermelon boat by the folks over at Starting Electronics.

The only bad thing about Portal is that you can't play it everywhere. You can't play it while camping, you can't play it in the car, and you can't play it in the waiting room at the dentists office (unless you lug around your laptop to all of these places. Weirdo).

No matter how advanced technology gets, there will always be room for classic video games in the hearts of nerds everywhere. Mini arcades became very popular, as they allowed users to take arcade games on the go. As Game Boys and other mobile gaming devices appeared, the mini arcade slowly disappeared.

Inductive charging is already a reality on popular smartphones like the Samsung Galaxy S III and Google Nexus 4, and Apple has recently published a patent that would make inductive chargers a reality for the iPhone. There are also several phones that have the capability for wireless charging, such as the Samsung Galaxy Note II.

There's nothing worse than when you come up with a brilliant idea while you're busy with other things and then promptly forget it. Whether it's the perfect ending for your novel or a comeback you should've said during that argument with your roommate last week, it's always annoying.

Robotic Rubik's Cube solvers are nothing new. We've seen ones that are run on Android, made of LEGO Mindstorms, and faster than the world record holder. The most recent Rubik's Cube robot making the news was made by high school student James Watson as a school project, but it's ended up getting a lot more attention than that.

You can use Twitter to print Instagram photos, track news and weather events, or even remotely shut down your computer, and if you're familiar with IFTTT, there's no shortage of ways your account can help automate your life.

Do you know anyone that's infatuated with themselves and is currently in need for some good speakers? No? Well, just in case you do, here's a neat Christmas present idea for your narcissistic speaker-less friend.