LEDs sync to music (with pics of my awesome computer case mod)

Step 2: Build the circuit

 Here is the circuit i used.  For the 12v power supply i found a spare molex connector from the computer power supply and cut it. I used a multi meter to find which 2 was the positive and negative.  (for me the yellow was positive and the black wire beside it was negative).  Be careful when doing this and make sure the computer is off to prevent the risk of electric shock. (im not responsible if you get shocked or hurt).   If you have any questions just comment below.

Comments

[xDGx]

This is great, works fine here.
I want it to pulse with the bass *only*. Is there a way to make a filter for it ? thanks

[mossDboss]

Yes, there are ways to "pulse" bass only or rather to "pulse" at a certain frequency. To achieve a pulse a certain frequency you need the correct IC, Capacitors and Resistors, you also need to know how to connect it all - I know how to read a schematic and set up a circuit, but I do not know how to achieve a certain "pass filter' without someone telling me the capacitor and resistor values.

[musick_08]

Hmm honestly I'm not sure. I guess you could connect only a subwoofer or something to this to get the effect. But i don't know of a filter or anything

[waldo55]

Thank you for making this instructable i tried this out and it worked grate. one thing i used this diagram in making a led synced music cabinet the only difference is my leds are in parallel and the power supply is only 5v well when the bass hits and the leds go off i get some weird distortion in the music just wondering if any one knows what i did wrong

[najibg96]

what will be if i don't put an on/of switch

[musick_08]

if you dont put on an on/off switch then it will be always be on

[najibg96]

hello

[najibg96]

you are here??

[najibg96]

hello

[ertxz18]

Love your tutorial, however, can you please post a more specific diagram of the circuit, to be especific the audio jack and plug and those are supposed to be wired. Thanks!

[musick_08]

I will try to post one here soon, but they are wired in parallel. Idk if that helps much or not?

[ertxz18]

Thanks, it does help, since I didnt see a hot wire coming from the plug I was wondering what had happened to me. I thought maybe you meant in series but accidently wrote parallel or something since there was no hot. Thanks for the explanation, its working great now :D

[musick_08]

Lol yeah I should've made that more clear. But your welcome, glad to hear it's working :D