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RGB LED strip

Discussion in 'LEDs and Optoelectronics' started by SuperGula, Jan 20, 2017.

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  1. SuperGula


    Jan 20, 2017
    Hey everyone,
    I know little when it comes to electronics and there's something I want to do so I thought - instead of destroying my stuff, I'll consult with smarter people than me in the matter.

    So, here it is:
    I have a RGB LED strip. I want to make it react to music.
    I thought - if I can connect one colored LED strip to a speaker's negative and postive, why couldn't I do it with the RGB LED strip if I have three speaker?
    So I had an idea - what if I'll connect:
    R to one speaker's positive.
    G to the second speaker's positive.
    B to the third's positive,
    G to all speakers negative.

    My question is - Will this work?
    If not, why?

    And another thing is - can I connect the RGB LED strip to the 3.5mm aux instead?
  2. BobK


    Jan 5, 2010
    Simply connecting an RBG strip to a speaker would cause great distortion on the speaker.
    You need at least a transistor and resistor in between. Look up some circuits on the web.

  3. Audioguru


    Sep 24, 2016
    A speaker operates with AC. Most (but not all) LED strips operate from DC. Most LED strips use 12VDC but the output power of your amplifier determines its voltage that might be too low and the LEDs will not light or the voltage might be too high and it will destroy the LED strip.

    We do not know what the 3.5mm aux is for. Line level input? Line level or headphones output? Speaker output?
    None of them is 12VDC.

    A transistor circuit can detect the audio and drive the LED strip.
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