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Fish Tank Hack – How to Heat/Light Your Fish Tank using LEDs!

http://hackadaycom.files.wordpress.com/2010/02/led-fish-tank-lights.jpg?w=470&h=353

Here’s a rather ingenious hack where the owner of this fish tank has replaced his florescent lights with LEDs.  On top of that, he has used aluminum casing that transfers heat generated by its LED system into the water directly. (You can see aluminum bars extended into the water.)

First off, I don’t think the LEDs themselves generate enough heat to actually heat the water much because LEDs in general are low-heat devices.  But it seems like the owner of this fish tank

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DIY Chalkbot Draws a Nike Swoosh!

Remember I did a DIY on a Nike swoosh using LEDs and a golf club?  Well, here’s another innovative chalkbot that draws a Nike swoosh on the ground, cool! – via hackaday

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LED DIY – How to Make a Cool LED Dot-Matrix Display!

Here’s a really cool DIY that shows you how to make a cool LED dot-matrix display.  I’ve seen plenty of these in the past but they seemed to always be in style.

This is a simple HOW-TO make your own personalised LED Dot-Matrix display. I will be adding the complete program with an explaination to light the LEDs with. It’s also rather hackable, you can change it to suit yourself.

via instructables (via

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The Pharox LED Bulbs!

Yey, we finally have LED bulbs from Pharox that greatly increases the efficiency of light bulbs while lasting 50 times longer.  I have to say these LEDs are very handy for projects too while they don’t really product enough heat to hurt you even when you touch them.  Cool stuff.

The Pharox LED bulb produces a warm glow equivalent to that of a 40Watt incandescent bulb, but uses only 5Watts of energy. The Pharox bulb is compatible with standard fittings and has a stylish design that looks more like a traditional incandescent bulb, yet is 90 p

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Garden DIY – How to Make LED Grow Lights for your Plants!

Hopefully, you won’t be using this LED grow light to grow your illegal plants (or maybe legal depending on where you are and what licenses you have), but here’s a great way to keep your plants healthy full of artificial LED light by making LED grow lights!

Specialized grow lights that closely mimic the sun’s rays are a better solution, but you can get the same effect with special LEDs that are also brighter, cheaper and last far longer. These bulbs actually work best as a supplement to sunlight during the day; however, they’ll also

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DIY LED Heart Circuit Kit!

If you have been looking for an easy kit to make an electronic heart, you can refer to my heart DIY or you can get one of these really cool DIY LED Heart Circuit kits.

The LED Flashing Sweetheart Kit contains a circuit board, 28 LEDs and various diodes and resistors you solder together (with your own two hands) to create a lovely romantic knick knack.

via sleeprevolution

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DIY Arduino Rotating LED Persistance Of Vision(POV) Display!

video://www.youtube.com/watch?v=7QMV4mRVpo4

video://www.youtube.com/watch?v=xFccaMiNTJA

Here’s a really cool DIY that involves an Arduino microcontroller module, LEDs, and a motor to spin the freak out of the POV display.  I really enjoy this except I can’t understand the language on the DIY Page.

Well, the most I enjoyed is the background music, don’t u agree?

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Home Improvement DIY – How to Make LED Chandelier for lighting up your Kitchen in Low-Energy Style!

In case you haven’t noticed, eco-friendly and green people have been trying to replace traditional energy-robbing halogen bulbs with bunch of low-energy, low-cost LEDs.  Which is a great thing for safety, energy, and also creative DIYs such as this one that shows you how to make LED chandelier for low-energy, high-style kitchen.

I wanted to experiment with a lot of LED;s on AC mains, and this

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Halloween DIY – How to Make an LED Pumpkin with Arduino!

video://www.youtube.com/watch?v=vAl8aSZhSz8

Yey, here’s another cool LED Pumpkin you can make, sorta different from the one I made couple years ago but this one, you can use Arduino to make it.

The Arduino is programmed to pulse the eye LEDs until the victim, I mean trick-or-treater, presses the big red button. At that point the bright white LED will glow, there will be a slight delay, and the servo will trigger a blast from

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Pyro DIY – Fireworks Ignition Control System using Parallax SX48!

You know when it comes to New Years and Independence Day, you always get to see some really exotic, beautiful fireworks.  Well, all those fireworks are nowdays controlled by an ignition control system but here’s how to make one for yourself.

At the heart of my firework ignition system is an SX48 running at 50 MHz. I was able to make full use of the SX’s 36 IO pins. Thirty lines are dedicated to the 30 channels. Two lines connect to a MAX233 chip for serial port control. Another line is connected to a 7805 (TO-92) which monitors the state o

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