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Routing Multiple LEDs to a Single Switch

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 Thread : Routing Multiple LEDs to a Single Switch
 
Profile: newbie
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So here's my problem: I have several LEDs spread throughout my case and I am trying to connect them all together to a single switch, so that when I flip it on, every single LED hooked up to it will light up. The switch is military-style and located in a drive bay.

Actually I have 4 switches on this bay panel. My goal is to route blues to switch 1, greens to switch 2, etc.

Does anyone have any suggestions? My circuitry knowledge is some-what limited ;p.

Oh, and is it possible to connect a CCRT light to this stream?

Help is much appreciated :]

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Profile: nimble knuckle
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okay what you want to do is hook them up in Parallel, not series...

lets say you have 2 wires, red and black on the led...series is when you string them together end to end like red to black to red...get it... ?

Parallel is when you hook all the black ends to one side of the swich or wire and all the red on the other side...

lets say you have 2 wires, in addition to your black and red wired leds...now lets say the 2 wires from yoiur power supply are blue and green okay... ? Parallel is when you take all the red wirees from the leds you have and hook them all on the blue or green side, anf you hook all the black leads from the leds to the other color wire from your ps or battery

like a ladder with the leds in the middle and each side of the ladder would be a wire (green or blue) and all your led's are the rungs, all the red or black leads on the leds go to one side of the ladder.

If this is confusing any book on dc circuits will explain it in the beginning...gl :)


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Profile: nimble knuckle
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get a book on basic circuits (dc circuits ) and you'll be all set with how to hook them into the switch and all that stuff :) the library has em :) and even the old ones are still correct.



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"Now if the 4870x2 was actually notably faster than the 280 for about the same price, then I might even take a chance on it. However, that won't be the case."
Profile: newbie
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Awesome, I'm starting to understand this! Thanks a ton for the help, I'm going to look into right now as I'm still not confident that I am capable of getting it to work :p

Edit: Right now I'm looking at some diagrams and I have absolutely no clue what they are trying to show with a bunch of squiggly lines and Greek letters. I will attempt to draw one out myself in plain view and hopefully you or someone else can critique it.


Message edited by niiif on 08-06-2008 at 09:59:47 AM
Profile: newbie
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Here's my novice attempt at trying to diagram lol..
http://img165.imageshack.us/my.php [...] 845nc5.png

Profile: journeyman
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diagram seems ok. the thing that should be attached to the end wiring would be the last LED.

Profile: nimble knuckle
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Make sure you have the proper resistance for the LEDs. Depending on the LEDs used you need something between 1.8 and 3.3 volts each. Don't let them die!

Profile: member
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Slobogob wrote :

Make sure you have the proper resistance for the LEDs. Depending on the LEDs used you need something between 1.8 and 3.3 volts each. Don't let them die!


Well if he has 4 LEDs connected to one 12v source, they should all draw 3v, correct? Also, how would one go about making the switch, instead of turning the LEDs on and off, make the LED on a multi color LED change colors?


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Profile: Forum Fixture
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Hook these up in parallel on the 12V, as per royalcrown.

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Profile: addict
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To control flashing and time delays you would need an LED driver chip. You are getting complicated. You would need a microcontroller chip too along with other stuff on a bread board.

Profile: Forum Veteran
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I had a flash back of a batman movie where riddler was wearing that jacket saying it keeps him safe at night.

With those 'Super Bright LED's' with them being water proof, he could make swimming trunks so he could go swimming at night and feel safe in the water? :lol:. o O(riddle me this.. riddle me that...whos afraid of the big.. black.. AHHHHH SHARK!!)

Profile: addict
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for custom stuff it is easier to modify existing products.
For example this.
http://www.alliedelec.com/Search/P [...] W-DIY-5052

you would change out some of the LEDs too differnt colors. It is sometimes easier then designing form the ground up.

Profile: nimble knuckle
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Asian PingPong wrote :

Well if he has 4 LEDs connected to one 12v source, they should all draw 3v, correct?



Correct.

Asian PingPong wrote :


Also, how would one go about making the switch, instead of turning the LEDs on and off, make the LED on a multi color LED change colors?



You need some control logic for the three or more pin LEDs. Usually that "logic" simply switches the flow of current between the pins, so it should not be that difficult.
As an alternative you could use a two pin color changing LED but that would switch colors randomly over time.

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Profile: enthusiast
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Also make sure you connect LED's polarity up right as they are diodes


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Profile: addict
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niiif wrote :

Here's my novice attempt at trying to diagram lol..
http://img165.imageshack.us/my.php [...] 845nc5.png



Excuse me, but speaking as an electronic technician, what I see on that diagram is that the switch is acting as a dead short! :non: Close the switch and you short the supply. What "goes on the end" is of course the power feed, a plug for 12v molex or onboard header.

The switch should be in the red lead right after the positive side of the source, with the reds of all the LEDS tied together after that; and all the black leads tied together and connected directly to the negative of the source.

All LEDs produced for PCs have a built in current limiting resistor, so they usually can be directly connected to anything between 3 volts and 12 volts. If n