Step 2: Preparing the box

From the acrylic sheet we're going to build the box.

1. Draw out the plates for the box on the acrylic sheet (photo 1). My longer plates are 15cm x 5cm. And the squares are 5cm x 5cm. Of course you can use any size for a box you want.

2. Use the jig saw to cut the plates from the acrylic sheet. Be sure to do this as perfect as you can. Because all plates need to line up nice with each other (photo 2).
If the plates don't turn out to be equal, you can sand the sides till they all fit nice.

3. Get the drilling tool and use a drill bit that is the same size as the thickness of the headphones cord (photo 3).  Then drill another hole for the adapter to go though.
When you're drilling, do this very carefully! You don't want to hurry, else you might put too much pressure on it and break the plate.

<p>Can i use any other npn transistor for this project?</p>
<p>Hi. Very nice project and very well explained. I would like to make something similar, but instead of working with an audio cable, i would like to work with a music box (something like this http://www.klockit.com/products/dept-166__sku-GGGKK.html). Would that be possible and how? Thanks!</p>
<p>CAN SOMEONE PLEASE HELP!!!</p><p>I am doing this as a project for my engineering class and I have little to no knowledge of circuitry. Anyway I built the whole circuit EXACTLY as it is shown but for some reason when I plug the Aux cord into my phone or computer it turns on the LED lights even if no music plays. So you can barely tell they are blinking in accordance with the sound because the light is already on. It would be like trying to use a strobe light in a room that is already completely lit. Can somebody please help me!</p>
<p>I made it, I use 2 channels, four LEDs each Channels.</p><p>Here is the video</p><p><iframe allowfullscreen="" frameborder="0" height="281" src="//www.youtube.com/embed/b17zd35TTKs" width="500"></iframe></p>
<p>Hi man this visualizer is amazing, but regarding the headset cable which is 3.5 jack I already cut it off but i have 4 wires one of them is red, is this red wire needed?</p><p>And is there any other components required like resistors for example? (like the diagram below)</p>
<p>I created another music led, but this type with band pass filter. Watch at my demo.</p><p>https://www.youtube.com/watch?v=xnMQG-hF-ho</p>
<p>Thats nice keep going on :D</p>
<p>&lt;iframe width=&quot;560&quot; height=&quot;315&quot; src=&quot;https://www.youtube.com/embed/xnMQG-hF-ho?rel=0&quot; frameborder=&quot;0&quot; allowfullscreen&gt;&lt;/iframe&gt;</p>
<p>Very cool! Are you splitting left and right channels from the audio and then using two tip31 transitstors? Are you using a 24V power supply or is there a better way to fire up that many lights?</p>
<p>Yes I am splitting them L&amp;R with 12V powersupply, you can try two parallel the additional LED that you want as long as your power source can support it.</p>
<p>Hey my LED's have an earth in the middle of the + and - ... how do I earth them? I got this working years ago but trying to do it properly now but the lights I got have 3 conections.</p>
Also I'm not familiar with working with LED how did they hook them up together? With a wire or did the just twist the legs together?
<p>anybody have any idea on how i can integrate speakers into the box?</p>
LEDs r glowing very dim evn at the maximum volume. Any solution to bump the brightness to the maximum ? Thanks in advance <br>
<p>hello,<br>question is the music coming out from the speakers from the computer right not from a speaker integrated to the box,btw music is so cool!</p>
<p>Hey guys, I've been looking at this for a while and have some Ikea LED lights lying around at home, some RGB ones with a wired remote and have been testing them to see which parts control the positive and negative ones and opened up the splitter to see how it would be possible to have two TIP31 chips to control left and right but after looking into it, I struggle to see how to do that since the connectors to the LEDs have 4 pins each so I'm not sure where to go from this, I could simply only have left or right for all but why do it simply when it can be complicated ^^ Anyway, if anyone can help me out with this then thanks a lot and if the only possible thing to do is buy a new set of LEDs then so be it (but I'd rather not have to). Thanks a lot everyone :)</p>
<p>where is the circuit?</p>
I know this is a dumb question, but how do you keep from burning out the LEDs? Does it just evenly disperse? <br><br>Say i hooked the whole thing up to a cigarette lighter....<br>
Would substituting the individual leds with a led single color light strip, work?
Can i use my broken flat screen to do this?
<p>I made this(pics of the box will be posted later) instead I used 4 LED's (red,green,red,green) with a 12v 3.33a power supply. The reds are slightly brighter due to their lower forward voltage rating, compared to the greens. With this circuit, I tend to keep my volume low but higher on my headset. An with my HD Realtek Audio driver, I'm able to have multiple outputs, allowing me to plug my array in and not have to use a Y splitter. Again, I will soon post pics of my project. </p>
<p>Also, this is one of the best projects that I can say &quot;time well spent.&quot;</p>
Very awesome project. I did get it to successfully work; however, I also have the audio hooked up to an amp and the only way the LED will work is if the volume is maxed. I don't have any way to control the amp volume so it's really loud. Anyone have an idea how to up the signal to the LED's without increasing it to the amp? Thank you!
<p>someone plz tell me what kind of old material does have tip31c ?</p>
<p>u cant salvege that kind of part but there like 1.20$ at radio shack or</p><p><a href="http://www.amazon.com/gp/offer-listing/B0002ZPZYO/ref=dp_olp_new?ie=UTF8&condition=new" rel="nofollow">http://www.amazon.com/gp/offer-listing/B0002ZPZYO/...</a></p>
<p>copy cat u copyed this from the diy popular scinces book </p>
<p>someone plz tell me what kind of old material does have tip31c ?</p>
<p>thanks..can i connect the circuit in 230 volt ac by using ac to dc circuit.....? pls give me the ac to dc circuit.. my email:gokulindianur8@gmail.com</p>
<p>How to connect the phone? If we connect the phone through the audio jack, then how are the phone speakers going to work?</p><p> Please help asap.</p>
<p>I think it only works with external speakers... you will also need a jack split then...</p>
<p>does this project require a pcb layout?</p>
<p>hi, I just made this and burnd 4 of 7 LEDs. I used 2 tip31c transitores and a12v 500ma power suply. Wat did i do wrong? Love the project!</p>
<p>hi, if you find our led strip ,make this kinds of light will become easy ,check our web:www.lslledlight.com for led strip and module ,try it ,it is wonderful to you</p><p>by the way ,you design is so great!!</p>
<p>this is awesome, I want to do this without audio input, instead use a microphone, please someone help.</p>
<p>All you should need to do is simply build a small audio amplifier circuit (like the one attached) and connect your microphone to the IN of the amplifier, and the out of the amplifier to the base of the TIP31.<br>Connect all grounds together and you should be golden.</p>
<p>Why do the LED's not need a current limiting resistor?</p>
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<p>2 VERY IMPORTANT details left out in the directions that will make or break this project. I signed up just to post this and let others no.</p><p>1. &quot;Any wires&quot; will not do. The thinner the better. This will be absolutely impossible to do with thick wire because of detail # 2.</p><p>2. The wires CANNOT TOUCH EACH OTHER on the tip31, NOR CAN THEY TOUCH ANY OTHER LEG on the tip31, NOT EVEN A LITTLE BIT.</p><p>For example, the negative leg on the last LED light is to connect to the middle leg of the tip31. That wire CANNOT touch the left or right legs or any other wires, not even a tiny hair's-width strand of copper can touch anything else.</p><p>If they touch another wire/leg, you'll notice it will complete the circuit and turn all the lights on and stay solid. When everything is connected correctly, the lights will stay off until the music plays. It took me days to figure this out.</p>
it doesnt work with samsung phones what can i do
<p>One improvement would be to add a speaker amplifier alongside this and have the device put out some audio as well.</p><p>&lt;img src=&quot;http://www.deeptronic.com/wp-content/uploads/2014/02/small-amplifier-3-transistor-design.gif&quot;&gt;</p><p>This is a simple transistor circuit that works decently. If you want quality sound order an OP-AMP and use that (make sure it's 12V compatible).</p><p>Thanks for sharing!</p><p>JesusG33k</p>
<p>they spark together, no frequencies at all..but great job man... i think this one is better..</p><p>Souce : youtube</p><p>https://www.youtube.com/watch?v=Yd3hzYAJzOo</p>
<p>We made our first one of these, but are planning to make some changes. We used the super bright blue LEDs our local electronics shop carried, but they only have a 20 degree viewing angle. We sanded one of them to try to create the diffusion effect, but it just made the LED very dim. I just ordered some new LEDs from here: </p><p><a href="http://lighthouseleds.com/5mm-diffused-flat-top-led-blue-ultra-bright.html" rel="nofollow">http://lighthouseleds.com/5mm-diffused-flat-top-le...</a></p><p>and very interested to see the difference. Also, the info is here in the article, but I still didn't focus on it. We put 6 LEDs in our box like the video above, but it didn't work at all. After some confusing diddling, we finally figured out that we needed a bigger power supply. I found a 24V power supply on Amazon for about $8.</p>
Please tell me the exact number of the transistor the shopkeeper gave me tip31co.
<p>as long as it is TIP31. some had C and A but they work fine.</p>
<p>I'm testing my circuit on a breadboard (just like your linked video). I can't get the LED to respond to the music, it lights up as soon as I plug it into anything, music or not. It stays solid and won't respond to the audio signal. Know what I'm doing wrong?</p>
<p>Check your connection or repeat what you did. It happened to me. I even burned 10 LEDs.</p>
I'm so doing this, but I was wondering. Is there a way to sequence other lights to the individual parts of the tune? Like you have lights for the beats, but what if I want to add lights for the bass, and other?
<p>I am doing something similar! Filters! Look up low, band, and high pass filter designs and split the audio signal to run through each one respectively. Now you have signal for bass notes, mid ranges, and high frequencies. I have a tentative schematic as well. </p>
Very cool. Thank you. ^.^

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