Strip LEDs

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ajcooper4
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Strip LEDs

#1

Post by ajcooper4 » Mon Jan 21, 2019 5:08 pm

I'd like to fit some lighting in my buildings. I wondered about the strip LEDs which you can cut to length and solder wires onto for the power feeds.

I guess lots of you have done this - any advice on the best ones please and the power supply required?

Thanks.

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Brian
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Re: Strip LEDs

#2

Post by Brian » Mon Jan 21, 2019 5:13 pm

Power supply - Use a Regulated DC power source ideally 12 volt DC rated with at least 1.5Amp or greater output.
I buy Warm White strips form China ebay sellers in rolls of 300 LED/strip.. Obtain the non waterproof type. Cut up into 3, 6 or 9 way strips. I often add an additional series resistor too to reduce the LEDs brightness. 5K0 may be a good starting place?

Typical 12v Power Supply 2.0Amp Example link

Typical 5Mtr (300 LED) LED warm white strip... LED strip example
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ajcooper4
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Re: Strip LEDs

#3

Post by ajcooper4 » Mon Jan 21, 2019 5:27 pm

Thanks Brian. I was thinking of running a power supply to a switching board - a switch for each house/station/building for independent control. I imagine I could solder a resistor, like the one you advise, on to a piece of veroboard and run the power from there to the switches as described.

Does that sound ok?

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Brian
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Re: Strip LEDs

#4

Post by Brian » Mon Jan 21, 2019 5:32 pm

Hi
No, do not fit the resistors (various values for differing levels of illumination) at the switches. They need soldering to the Positive pad of a cut up strip, the other end of the resistor to the Positive supply wire. - One resistor per strip to suit. Or try an LED strip without an additional resistor and see what they look like! You of course can switch individual feeds thereby allowing a selection of whats On or Off.
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ajcooper4
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Re: Strip LEDs

#5

Post by ajcooper4 » Mon Jan 21, 2019 5:55 pm

Thanks again - so one resistor per lit building, as it were?

So put the resistors between the switch and the light strip each time.

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Brian
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Re: Strip LEDs

#6

Post by Brian » Mon Jan 21, 2019 6:42 pm

Wire like this examples...

Image
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ajcooper4
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Re: Strip LEDs

#7

Post by ajcooper4 » Mon Jan 21, 2019 8:26 pm

Fantastic Brain, thank you so much :-)

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ajcooper4
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Re: Strip LEDs

#8

Post by ajcooper4 » Wed Jan 23, 2019 3:10 pm

I have a power supply and my LED strips. What resistance would you advise Brian - I am fairly tech competent but this is familiar but not confident territory.

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Re: Strip LEDs

#9

Post by ajcooper4 » Wed Jan 23, 2019 3:27 pm

Sorry should have added - power supply is 12V DC 2 Amp. LEDS are 60SMD/metre.

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Re: Strip LEDs

#10

Post by ajcooper4 » Wed Jan 23, 2019 3:31 pm

Having done some beginner's research briefly I am thinking maybe the number of LEDs I use in each building is going to be a factor.

Maybe there's a basic calculation I can use? I am familar with Ohm's law but not sure of my calaculaton for this set up.

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