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Old Jan 02, 2013, 06:55 AM
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Joined Jan 2012
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Help with led set up.

Hi everyone. I building a new quad. I have two 1 meter strips, each minus 3 leds that I cut off. I always use 4s batteries. Would like to know what type of resistor I need to wire in to drop the 4s to acceptable voltage for leds? Also, important part, how do I wire them in? Thanks rkenosha
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Old Jan 07, 2013, 09:05 PM
kad
Quad Crasher
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United States, NY, Poughkeepsie
Joined May 2012
627 Posts
Hmmm A cheap LM7812 (<$1.00US) Voltage Regulator might work better. Drop the voltage down to the 12v the strips are already expecting. Slap a small heat sink on it and make sure it's near the prop wash.

-K
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Old Jan 08, 2013, 03:38 AM
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Bonnie Scotland
Joined Jun 2004
845 Posts
Each 1 metre strip will draw less than 400mA so I suggest the easiest thing to do is buy a small 3 cell LiPo (500-1000mAH) and wire the LED strips directly to it. It's a ready made solution.
Wire both strips in parallel.
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Old Jan 10, 2013, 06:03 AM
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Germany
Joined Dec 2003
4,995 Posts
Or buy a small switching buck regulator on ebay. These are adjustable in voltage and very cheap as well.
Connect this to the outer contacts of the balance plug for simplicity.
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