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How do you make a LED strip? - Page 2

post #11 of 26
Quote:
Originally Posted by puzzledazn View Post
I sent to research and saw someone doing this...

http://img151.imageshack.us/img151/9963/img0072qu4.jpg

Is that what you are describing killa? also, where can i get that type of wire ?

Thanks again to everyone!
I can't quite make out what that guy is doing from the picture... he might be setting it up for parallel which IMO would just be a hassle...

If I were you, I would just go with the method I showed above... you don't really need any sort of special wire... just some single strand insulated wire and electrical tape
post #12 of 26
Thread Starter 
Quote:
Originally Posted by killa_concept View Post
I can't quite make out what that guy is doing from the picture... he might be setting it up for parallel which IMO would just be a hassle...

If I were you, I would just go with the method I showed above... you don't really need any sort of special wire... just some single strand insulated wire and electrical tape
Alright, thanks a lot killa, I'll try to show the actual product when i am done lol...

Also, where can i buy insulated wire?
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post #13 of 26
You can buy wire pretty much anywhere....i usually get some at home depot. Much cheaper than what those ripoff "mod" sites sell it for.

And as far as the series/parallel thing, you can actually hook it up into parallel much easier than in series.

Code:
(+)  (-)
|     |
|-LED-|
|     |
|-LED-|
|     |
|-LED-|
Just strip the insulation off the wire at the points you want the LED, then solder the two prongs right onto the wire.

Doing it in series will just be a hassle, and if you bend it to much you are likely to break off the pins from one of the LEDS. And in series, if you break one of the LEDS the entire chain dies. In parallel everything stays working.
Edited by Manyak - 5/15/08 at 10:20pm
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post #14 of 26
Don't LEDs need some sort of resistor in the line before them?

EDIT: Yup, you do.

http://www.instructables.com/id/LEDs-for-Beginners/
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post #15 of 26
Exactly what Killa said, any insulated wire will do the trick!
You don't need to go and buy a whole roll of fansy-pants wire just for this.
Salvage, scavenge, reuse, and recycle!
Old fan wire, bits from an old wiring harness, any old broken electrical device!
(Doesn't even really need to be a Broken electrical device! -It will be once you rip the wiring out)
"Hey Boss!; For some reason I can't get your oscillating fan to turn on!"
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post #16 of 26
i do alot of rewiring for many projects and you are going to want high quality wire

http://www.onlybatterypacks.com/items.asp?db=39

is where i get all my wire from. also if you do solder make sure to get some nice solder and a nice soldering iron
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post #17 of 26
Quote:
Originally Posted by AKAeric View Post
Don't LEDs need some sort of resistor in the line before them?
That depends. If the LED is rated for a lower voltage than the line you are putting it on, then yes. Most LEDs just happen to need ~3V, but there are ones rated for 110VAC and other voltages/currents.
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post #18 of 26
Thread Starter 
Quote:
Originally Posted by AKAeric View Post
Don't LEDs need some sort of resistor in the line before them?

EDIT: Yup, you do.

http://www.instructables.com/id/LEDs-for-Beginners/
that's right... don't i need some sort of resistors?
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post #19 of 26
Quote:
Originally Posted by Manyak View Post
That depends. If the LED is rated for a lower voltage than the line you are putting it on, then yes. Most LEDs just happen to need ~3V, but there are ones rated for 110VAC and other voltages/currents.
So you'd still need one if you were going to tap into either the 5v or 12v lines from a molex.
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post #20 of 26
Quote:
Originally Posted by Manyak View Post
Doing it in series will just be a hassle, and if you bend it to much you are likely to break off the pins from one of the LEDS. And in series, if you break one of the LEDS the entire chain dies. In parallel everything stays working.
Your points on parallel over series are very true... the only reasons I really suggested series was because it's more simple for a beginner and easier to turn into a uniform strip

Quote:
Originally Posted by Manyak View Post
That depends. If the LED is rated for a lower voltage than the line you are putting it on, then yes. Most LEDs just happen to need ~3V, but there are ones rated for 110VAC and other voltages/currents.
Yep... Just so happened that the ones puzzle showed were rated for 6-12V, so hooking it up to the 12V on the molex connector should give optimal brightness without burning them out... a potentiometer could be added to the circuit to turn them down however.... 30-50 ohm would probably be correct - too lazy to calculate it out

If a potentiometer is added in, parallel would be the way to go (otherwise, voltage would be stepped down after each consecutive LED making them less and less bright)

But again - too complex for a beginner and why I suggested series
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