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led powering problems. please help


shood23

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Right short and sweet. I have bought the below led lights, I have to put anywhere from 12 to 18 in a model but I am having real problems powering 1 let alone 18

Screenshot_2015-08-29-12-06-27_zpspxjfxv

At the moment I haven't made any permanent connections as of yet but the way I have done it it is really struggling to make any decent light with 1 led connected and when I add another led into the circuit nothing works

Like I say I need over 10 leds in the circuit I have mapped out and in the most case I would like a generous amount of light coming from each led

Anyone that know where I am going wrong please help

Shaun

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I assume you are using the required 9-14V DC to power the LEDs?

As long as you have the LEDs the correct way round and wired in parallel, there's no reason at all they shouldn't work. They don't draw much current, so a PP3 should easily be sufficient.

Can you explain what you have done so far?

Cheers,

Mark.

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Thanks for the quick reply Mike. Just take into consideration I am a complete newbie at lighting so if there is anything dramatically wring that's the reason

This is the test setup up I have done just to check it out

1. Worked but very dim

20150829_133001_zpstglibss8.jpg

2. Didn't work full stop

20150829_132930_zpsvuctgkvy.jpg

So I cut the heat shrink off of one and this is the resistor that I presume is connected to all

20150829_132607_zpsdof09aei.jpg

Again this is my first lighting project and in the end things will be soldered but I want them to work first before making a more permanent connection

So if you can see where I'm going wrong or if I need to add more or take anything away then let me know

Cheers

Shaun

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You have them connected in series! Connect them so that they look like the rungs of a ladder, with all the positives along one side, and the negatives on the other side (if that makes sense. The resistor can go in series on either side, but not in parallel!!

Make certain the positive is connected to positive side of battery - should then work :pipe:

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I've had a it of a blonde moment lol I bought a new battery just to make sure and using the ladder as suggested they now work a lot better and much brighter

It's always the component that you never give a second thought that holds you up, mental top tip always check the batteries

Shaun

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