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New to Electronics: Is there any low voltage LED strip that can be powered with battery for Arduino

Feeder Peter

Apr 3, 2015
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Apr 3, 2015
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I'm currently looking for any LED strip (that is programmable) for Arduino.
Any suggestions?

Thanks,
Peter
 

KTW

Feb 22, 2015
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Feb 22, 2015
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Wouldn't you program the IC to control the strip?
A 12 volt strip will work on 9 volts.
 

BobK

Jan 5, 2010
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WS2812 type strips operate on 5V, and have individually programmable LEDs. They can take a lot of current though. 1m at 60LEDs with all 3 colors fully bright takes 3.6A. For indoor use you can probably run them at 10 to 20% of that current through, and you will not have all of them on all of the time.

Bob
 

JWHassler

Dec 22, 2014
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Dec 22, 2014
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The current-draw of a WS2812 is 20mA times the number of LEDs lit: you can change the number lit, but you can't change the 20mA.
 

BobK

Jan 5, 2010
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Yes you can. It does PWM with 8 bits for each LED. If you make the 8 byte 11111111 you are using 20mA. If you make it 0111111 then you are using about 10mA average current. If you use 0001000 you are using about 1.25mA average current.
 

Kenneth Tan

May 22, 2015
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May 22, 2015
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Ws2812b led strip with arduino nano and fastled library. This library knows if the battery current exceeds its maximum and changes the program accordingly.
It's used very often for wearables that need to be portable and battery operated.
 
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