About ElGringo82

Aug. 28, 2016
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  • is there any port on the laptop that could supply 12V ? ... sorry suggestions are popping through my head one after another

    what about this ? ... can I remove the USB plug and solder it on the USB port ? it says 5V DChttp://www.ebay.com/itm/50-100-200cm-3528-SMD-LED-Strip-Light-TV-Background-Lamp-Waterproof-USB-Cable-/131762041291?var=&hash=item1eada131cb:m:md4GtFYZTa0EPzNstx-0XaQ

    I don't want this, already have one, the less hassle the better, these are ineffective. why do I want to buy a male USB port ? this is going off topic. The only thing I want on the surface of the laptop is the 6 LEDs ...

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  • I think you should just buy somethng simple like this: http://www.ebay.com/sch/i.html?_from=R40&_trksid=m...

    Laptop charger, or USB port?You need to solder a male USB plug to the input of the converter. Do you know how to do this?

    You need a male USB plug so you can plug it into the female USB port of the computer, to get 5V. Hope this helps.

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  • If you want to power it by USB, you'll need to higher the voltage to 12V. As long as the LED strips don't need too much current, something like this should work: http://www.ebay.com/itm/DC-3-3V-3-7V-5V-6V-to-12V-... - Yonatan24

    As you mentioned, you need 7W to light up a meter. So assuming you are using 30 LEDs per meter strip, each LED is consuming about 20mA(which is perfect!). This is important as you will need to know how many LEDs you can light up safely.To pull power for it, you mention you are considering soldering to USB's power terminals. You will be unable to use that USB port as a majority of the current will be going to the strip instead of the peripheral connected to USB. You'll be able to pull 500mA from it, but might be limited to only 100mA depending on your laptop(http://electronics.stackexchange.com/questions/549...) Also, you'll need a buck-booster as Yonatan24 mentionedConnecting to the laptop charger port, is a better option if it provides 12V. Light will only glow when charger is connected, but chances of anything going wrong with motherboard are greatly reduced. - Antzy Carmasaic

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  • yes the leds will be cut from a 5 meter standard strip LED roll. I want to cut up to 6 LEDs from the strip.

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  • does each LED get 12v? Or are they in series such that in a circuit of 12 LEDS (or whatev #) each one gets 1 v?

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