Music Flashing LED Lights How-to




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    24 Discussions

    whats the best led to use for this? i have a 500 watt amp and 50 watt max midrange speakers. i tried to hook them up to the midranges but they would stay lit and not pulse at high volume


    if i was going to do something like this in my car, using 8-10 leds per color, what size resistors would i need? I would use Red for my lows, Blue for mid, and white for highs. would i need anything else in order to do all of this?

    1 reply

    8 years ago on Introduction

    Can you guys do a IN DEPTH tutorial because im a noob at this stuff and its freaking sick and I want to do it really bad but its too confusing.

    1 reply

    8 years ago on Introduction

    thats so tight!!!......only thats total poo! i hooked mine up just like yours but nothing happens???? then i took a volt reader an im only getting 0.1volts out of the speeker :/ why is this( speeker works 100% well) you must be using an IC or something that you not telling us...right??????? PLEZ HELP i think thats so cool if i could get it working!!!

    10 replies

    Turn up the volume, aslo check and see if ALL of your LEDs are connected the right way, if only 1 is inverted it messes everything up. or if one is burnt out it messes everything up.

    thanks! but i only used one led befor doing a bunch so i dont wast my money... i tryed turning up the volume but am still not getting more than 0.5 volts and i think they need about 1.5-2.0 volts? oh man this vid is so tight!

    Did you try the LED both ways? and how big is your speaker? if it's a small speaker you wont be able to hear anything because of how much voltage is being sent out. ours came from a surround sound system.

    well the speaker is about the size of the one in your vid maybe a tad bit smaller. yes i tried both ways on the led. do realy good speakers use less power than a junky one cause i have a pretty gooood one. i spend a lot of time building things so i have a verygood understanding on electronics and how they work.... i just can't fig this one out>>>would the woofer hav more power???

    Yes the woofer should have more power, also keep in mind that sometimes there is a spike in energy comming from the speaker, and that can burn the LED. If you dont have the Led attached to an Ohm Resistor it can burn it on the first try. Use a white LED they have a higher resistance and start on the lowest setting for volume then turn it up slowly to see if the LED is even coming on. The woofer has enough to run the LED no problem.

    IT WORKS!!! what led's should i hook up to which speaker ??? as in what did you do. How many of each color did you use? oh i got it working on the other speaker to

    Hou can buy LED's from e-bay from China for about 1 buck lol,

    If you have surround sound, Left speaker controls Blue LED and Green LED, Center controls Red LED, and sub controls White LED...

    Because Green and Blue LED's have different resistance, they will light up at different times.

    haha true!:) ok your probly tired of me so last one...i think.

    ok so if i hook up say 6 led's, would the volume have to be higher then if it were hooked up to only one it possible to make a power amp :/ ???

    Yea the more LED's the more power (volume) you will need.

    Look two comments before this one (The_burrito_Master) he commented about this. I personally dont know how it would work. But he sugested to add a 9v battery with a 22k ohm resistor and a Transistor, Ask him with help about the low voltage amp. I know is possible but I'm not sabby enough for it. :(

    Good luck though, let me know if it worked out :)


    8 years ago on Introduction

    i feel as though i have been living under a rock my whole making life oooohhhhh the shame the terrible horrible shame i just found this and it looks amazing beyond words. i will make this it is my destiny

    I'd suggest using some transistors you wouldn't need to blare the audio in order to get light with low power systems. tip31 are great for audio bake sure to put a 22k ohm or more resistor on the collector tho, then just wire it up quite similar to this but add a 9 volt battery into the makeup.


    8 years ago on Introduction

    hi, is there a way to simplify the wiring to speakers and solder to a mini stereo jack (which would limit to 2 channels instead of 3) and thus plug into a basic hedphone to mp3 player? maybe not enough power/ signal. but not opening speakers either. im going to look into controllers. very nice instuctable, Thanks!