Category Archives: HOWTO

How to Build a DIY Energy Meter for Less Than $20!

For those of you who want an inexpensive DIY energy meter that would detect how much electricity you use, you might want to take a look at this hack where the author uses a simple circuit to detect infrared pulses from the electric meter whenever there’s 1 watt of electricity used.

 

via hackaday

 

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How to Build a Portable DIY Face Detection System for under $30!

For those of you who want to build a portable DIY face detection system (without the use of full-sized computers/laptops/netbooks), engineering students at Cornell university have come up with a simple solution using an Atmel ATmega644 8-bit microcontroller, a C3088 camera module with an OmniVision OV6620 CMOS image sensor, Atmel’s AT45DB321D Serial Dataflash, a Varitronix MDLS16264 LCD module for output, a 9-volt battery, and a small wooden s

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DIY Geiger Counter Kit!

We’ve seen a guy who made a DIY Geiger Counter before, for those of you who want to build your own to detect radiation (yes, that what Geiger Counter does, detect radiation, you can read all about it on WikiPedia), you can get this DIY Geiger Counter Kit and build it easily, just some soldering and assemb

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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 Make DIY Credit Card Earbud Holder!

I own a ton of earbuds and I usually store them in earbud cases that I got with my nicer earbuds but for those of you who don’t have an earbud case, I highly suggest you to make a DIY credit card earbud holder such as shown above to protect your investment.

The #1 reason why earbuds fail is because users don’t protect them and put them all tangled in their pockets and whatnot.  When earbuds tangle, there’s more likely chance you are going to break them in places.  I’ve personally broken many ear

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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 HackAWeek.com, 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 pimedius.com.

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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