Category Archives: Educational

Educational

Arduino Hack – DIY Ultrasonic Cat Water Dish Monitor/Twitter!

video://www.youtube.com/watch?v=0dpYAVWnfeA

Check out this cool device that can monitor a cat’s water dish and also twits it to Twitter.

1. Arduino waits for serial communication from computer connected by USB. Upon request from the computer, it will take a water level reading and send it back. 2. The computer, an NSLU2 reflashed with Debian, sends a request every hour at “0″ minute for the current water level. It takes that level and creates a text file, the text file is t

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Label DIY – How to Make Awesome Laser Labels!

One of my friends Russell has been making a blog over at WorldLabel.com with some awesome posts on various different things you can do with laser labels, here’s some of my favorite DIY/HOWTO guides from WorldLabel Blog:

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Best Desktop Receipt Scanner Review!

Couple months earlier, I had written the “best receipt scanner” review.  Well, that should have read “the best portable receipt scanner”.

I actually recommended the portable version to one of my friends who’s running his own business but he bought the “desktop” version.

Glad to say, I check it out and basically, this desktop receipt scanner had practically replaced my friend’s bookkeeper.(LITERALLY!)

On top of being about to scan 10 receipts in

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5 Great Green Blog for Reading!

Here’s a round-up of the 5 great green blogs you must read for green people out there: (Don’t forget Keetsa blog!)

1. Planet Green -This blog and portal is part of the Discovery channel media network and boasts lots of good green content and personalities. A fun read.

from their “about us” page:

Planet Green is the first and only 24-hour eco-lifestyle television network with a robust online presence and community. Launched in June 2008,

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Speaker DIY – How to Make your own Custom Speakers!

I used to be a complete bass-head, stuffed with bunch of 12″ woofers in the back of my car.  Well, although I am not such a bass-head anymore, here’s how you can become one by making your own custom speakers.

This Instructable will cover the entire process, from sourcing components, to tips and tricks, to exotic and inspiring finishing options.

via instructables

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Servo DIY – How to Make a Servo Plotter!

For those of you circuit hackers and servo-addicts, you might be happy to learn that there’s a way to make your own servo plotter.

For this project, we wanted to build a lower cost, lower precision XY table for an installation at TeleToyland. The goal is to allow web users to draw shapes in a sand box, so we wanted a simple XY table that is easy to control from a web application. Since we already have the Web to Hobby Servo connection working well for other installations, using a hobby

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What is Sonic Boom?

Today, I was just surfing around the web and found “Sonic Boom”!

What is it?

It’s when the aircraft goes faster than the speed of sound and creates water vapors basically or according to Wikipedia:

When an object passes through the air, it creates a series of pressure waves in front of it and behind it, similar to the bow and stern waves created by a boat. These waves travel at the speed of sound, and as the speed of the object increases, the waves are forced together, or compressed

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iPhone Hack – How to Make a Cheap Stylus with Snap and Dental Floss!

Here’s a quick and dirty iPhone/iPod Touch hack for making your own iPhone/iPod Touch stylus using snap fasteners and dental floss as ingredients.

Most standard stylus pens won’t work with Apple’s capacitive screens, but this model seems to use the conductivity and flexibility of a snap fastener bound with dental floss to get the right feel and connection. Feel free to correct our thumbnail circuit punditry, but first check out the simple, cheap building of an iPhone stylus:

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T-Shirt DIY – How to Tie Dye a Shirt!

I remember back in elementary school when all the kids used to go crazy about tie dye T-shirts.  Well, here’s how to make one yourself for those of you curious folks:

Take an old white shirt suffering from the “dingies” and turn it into a rainbow masterpiece! I’ll show you how.

via instructables

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Flyin’ High Voltage Jobs!

Here’s a cool video on people who actually work on the high voltage lines, they get there by a helicopter so they are not grounded while millions of volts of electricity go through their body while they work. (via hackedgadgets)

video://www.metacafe.com/watch/2890370/worlds_most_craziest_and_dangerous_job/

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