Category Archives: Circuits

Collection of circuits, schematics, etc…etc…
stuff to help you get through your apps

DIY Daft Punk Helmet!


Check out Harrison Krix who spent the last 17 months building this fully-functional DIY Daft Punk Helmet.  This is the most awesome DIY project I’ve probably seen for the last 17 months with every gory detail mastered to perfection. This would be the ultimate helmet to wear to a rave concert.

Here’s a time-lapse video of the DIY Daft Punk Helmet in the making:

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How to Build a Salt-Water Powered LED Light!


You probably well know of the focus that the world has been giving to alternative energy.  And I am sure schools are now pushing more ways to power our electronics than ever.

Which brings us to this awesome DIY that shows you how to build a salt-water powered LED light. You can also substitute lime juice for the salt-water.

Also see:

Beer Powered Batteries!

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How to Make a DIY Amplifier for Less Than $20!


Dino Segovis from, has put an excellent tutorial on how to build your own DIY Amplifier for less than $20 with LM386 chip and parts bought from RadioShack.

As you can see in the video below, this 1/2 watt DIY amplifier is pretty powerful little amp, all encased in an altoids tin. This small amp even has a guitar jack and ability to distort sounds, pretty darn impressive for a small circuit.

I think this is a great, simple circuit for those of you who want to build your amps. In fact, I will have

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How to Make DIY Arduino Ethernet CandyGrabber!


I’ve spent a lot of time at my previous company Comfile building ethernet-enabled devices, which is one of my favorite projects of all time (you can see some of my previous projects after this article at the bottom).

Anyways, Odvratno Zgodan has made a really cool device, it’s an ethernet-enabled DIY Arduino CandyGrabber, which works off Adobe AIR, PHP socket, Red5 server to allow anyone to control his CandyGrabber of the internet. You can try it out yourself here at

This co

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How to Build a DIY Portable Solar Charging System!


5 years ago, it was a lot harder to build your own solar-charging systems but now there are so much more resources plus price of solar systems have dropped quite a bit.  If you own a home and you have some space in your backyard (or roof) for solar panels, there’s absolutely no reason why you aren’t powering some of your home electronics via the power of the sun (unless you live in Alaska and it’s no-sun season).

Here’s a great example of a DIY portable solar

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How to Make DIY Camouflage Book Speakers!


Want to add some sound to your bookshelves without adding big speakers that will take up space?  Here’s an excellent idea, make a DIY camouflage book speakers. (See Steve Hoefer’s full DIY page here.)

My mom actually has two GIANT speakers taking up a whole lot of space on her custom bookshelves (so she can listen to classical music) but this brings up the idea that she can make a bunch of these camouflage book speakers and finally get rid of those old ones.

I think I

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How to Make a DIY Auto-filling Water Dish Machine for Dogs!


Here’s a genius idea for those of you guys with dogs so you won’t ever have to fill their water dish again in your life, perhaps just clean it once in awhile.  It’s an auto-filling dog dish machine that will recognize when your dog’s water dish is empty and fill it precisely to the top. The system uses pretty simple schematics and Arduino so anyone with decent circuit skills should build something similar easily as schematics is provided.

My friend by the way has 5 dogs, this cou

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SEE What is Inside the FBI GPS Tracking Device!


It’s probably fair to assume that FBI hires the best hackers of the world, and also fair to assume that they probably hire a lot of hackers (who’ve been caught) in return for freedom instead of jail.

Anyways, it’s easy to say that FBI does have these highly sophisticated equipment but have you actually seen one in real life?

If not that’s okay too because the photos posted here and at iFixIt show you exactly that, the inside working of a real FBI GPS tr

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USB Hack – How to Make Your Own DIY USB Keylogger!


Talk about stealth, this guy has made his own DIY USB keylogger, which is actually USB keyboard adapter with a PIC microcontroller “inside” it as its brains.

Of course, keylogging is probably not legal to do unless you have a good reason like you are an FBI agent spying on suspects/terrorists.

Regardless, knowing how one can make a DIY USB keylogger that is also super-stealth is good to know for your own security that there are smart people o

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Circuits DIY – How to Make Your Own Capacitor!


Do you know what capacitors do?  For those of you who don’t know (don’t worry most people don’t know what capacitors are unless you took some electrical engineering classes in college or you are electrician/bass-head), capacitors are basically electronic parts that can store energy, almost like a battery (it is kinda of one).

Anyways, for some reason the world ends tomorrow, perhaps you can make your own capacitor (provided there’s some aluminum foil still around, you can make that too first if needed) using aluminum foil!

I am not going to bur

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