Instructables
Picture of Control LEDs by Laptop or other Computer
This project is very much geared towards Christmas Decorations but with a little imagination the technique could be applied to all sorts of other applications.

It's REALLY important normally to not connect anything DIRECTLY to the computer.  These LED based lights are designed to work on THREE dry cells (AA Batteries) instead of the more usual TWO.  This means that they run on 4.5v which is very close to the 5v that the computer uses.  They already have a “Current Limiting Resistor” which is very close to the correct value, so I think I can get away with it,  I have not calculated anything!  It's a really quick and dirty prototype that works, I haven't had any problems...

,,,YET!

 
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Step 1: Prepare your Tools and Clear your Space

Picture of Prepare your Tools and Clear your Space
Well let's assume you have at least some idea of how to use the tools in the picture.  It's not rocket science but hot things will burn you and sharp things will cut you. Be a grown up, take responsibility for your own actions, and take suitable safety precautions.
holy retro computing batman does that have a parallel port on it? is it connect to a mylar tape machine?
Dream Dragon (author)  crackHacker1 year ago
Shhh! Don't say that too loud, you might hurt it's feelings. I don't have Mylar Tape, but I DO have a High density floppy "Zip Drive" and a 3300 modem. I quite LIKE the old techy stuff.

Seriously, Parallel ports are not THAT rare, and I think they're rather undervalued. A lot of things you can do with "Arduino" and other microcontrollers, can be done directly with the computer using the parallel port.

I'll have to get that second instructable done about the connections and stuff.

Hope you voted for me in the competition thingys.
sunshiine1 year ago
Nice job Dream Dragon! I hope to see more in the future! Keep on shining!
Sunshiine