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How do you make a LED strip? - Page 3

post #21 of 26
Thread Starter 
Quote:
Originally Posted by Manyak View Post
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.
How would you join the + and - wires back onto the molex wires?
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post #22 of 26
Quote:
Originally Posted by puzzledazn View Post
How would you join the + and - wires back onto the molex wires?
tap into the lines, solder and insulate...

Also, the jabtech LEDs you linked to are 4V max... you would need a resistor
The ebay ones you linked to are 6v-12v range and will work just fine without a resistor
post #23 of 26
Thread Starter 
For a paralle, would it look something liek this??
Or... if i do that, i would have a broken piece of poop lol




Also, what ohm for the resistor and how many and where to put it?
Edited by puzzledazn - 5/15/08 at 10:43pm
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post #24 of 26
post #25 of 26
Thread Starter 
Thanks killa... now for the resistors. How many would I need and what ohm ones?
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post #26 of 26
Quote:
Originally Posted by puzzledazn View Post
Thanks killa... now for the resistors. How many would I need and what ohm ones?
More hassle than it's worth personally.... especially in parallel... on top of calculating the proper ohm for a stepdown in voltage, you'd also need to factor in wattage to make sure the resistor doesn't start to fry... you could use a separate resistor for each individual LED, but it hardly seems worth it

I could work out the math, but really - tooooo much hassle... instead, just look for LEDs with a maximum tolerance of either 5V or 12V (if it's 5V, hook up the positive lead to the red wire instead of yellow)
Edited by killa_concept - 5/15/08 at 11:09pm
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