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Hello friends, this is my take on a 5x5x5 LED cube, lets get started.

The first thing we need to do is get all of our supplies.
We're going to need...:
*125 LEDs (make sure they are red or yellow or the arduino will not be able to run it)
*wire, lots of wire
*5 3-8 line decoders
*5 NPN Transistors
*30 150 Ohm resistors
*a bread board ( preferably 3x 5 inches)
* soldering iron (always wear your safety glasses)
*sponge (for cleaning the soldering iron)
*conductive rods ( you can get 3/64 brass rods in a 6 pack at hobby lobby for about three dollars; get about 6 or7)
* wire cutters
*needle nose pliers
*wire strippers



Step 1: step 1 cutting the rods

The rods at hobby lobby are one foot in length; however, we only need pieces that are 5 inches. we are going to build a frame for the cube then attach the LEDs to the skeleton.

First take your rods and get them all the right length. cutting two inches off every rod then cutting the rest in half to five inch pieces.
once you have all of them cut we can move on to the next step.

<p>Does this work? Please send code to caolan_o_hara@hotmail.com</p>
The schematic is totally wrong ... I have scrapped 2 pcb :(
<p>Hi, What transistor are you using?</p>
I couldn't find 74HC238 decoder and could you plz help me whether i could use 74HCT238 instead of 74HC238
<p>late answer lol,</p><p>but that chips are just the same, so that should not be a problem</p>
<p>okay, so I'm a bit struggling, I can't get it to work, because if I run the code, there sometimes flashes one led, or sometimes a collomn, but it doesn't really work. It's not because of the code, I think. I made it like the circuit diagram wich was attached to this instructable. Can someone help me out please?</p><p>Thanks!!!</p>
<p>Do someone nows how to fix the code errors?</p>
<p>I don't know if you have your cube running yet, but you could probably use an older (or other) version of the arduino IDE. It might work, but I'm not sure about it.</p>
<p>I already tried an old version but it didnt worked, i think i will try an older one, thanks.</p>
<p>Yes, I think you have to use a really old one, like 1.0.5 :-). I wish you succes!</p>
<p>the code worked, =) but not all the LEDs turn on, they are not red or yellow but i think thats not the reason of the problem, i already checked the soldering work but it is all right does anyone knows hoe to fix it?</p>
<p>How do you power this?</p>
<p>Just using the 5v output pin on the arduino. You have to connect everything like you can see on the schematics</p>
<p>Please send code to soraschultz@gmail.com</p><p>Thanks! </p>
<p>okumusemre19@gmail.com Please send code help</p>
Please send code on shashigupta323929@gmail.com.
<p>please send code to email : vuminhduc456@gmail.com Thankyou !!!</p>
<p>code has many compiling errors....please upload correct code</p>
<p>I have a problem. I use decoders 74HC238 and I'm not sure but think the problem is in my decoders. Can you tell me which decoders you use?</p>
<p>Same question here. I doubt the Arduino would allow for enough current for the 125 LEDs without burning.</p>
<p>Could you post some pictures of the Board and the connections?</p>
<p>Could you please take some pictures of the board</p>

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