For this project arduino uno is must and 64 LED's you need of your color choice.
I have used blue LED's for this project.
You need to solder all 64 led's layer by layer but that would be very difficult if you try to to solder normally so i used a wooden jig which is capable of holding the led's in right place,
Goto this link http://adf.ly/wWZNw and http://adf.ly/wWZSa to download 2 pdf files and make the right size wooden jig.
I have printed the 4th page of that pdf (4x4x4 led cube construction pdf )
and pasted on the wooden board of size 6"x6" and 1" thickness.
and the right size hole drilling instructions will be in the pdf files.
After you made the jig then place the led's for soldering before doing that you need to bend the leads of led's in right direction, how to bend and place it in jig for soldering is also there in the manual that 2 manuals are very short in size and totally 30 pages including both
Take one led and using the nose plier bend its longer end lead exactly 90 degrees to it see the images to understand. Then bend the smaller lead exactly 90 degrees to both led bulb and the longer lead .
long lead is +ve and is called anode and smaller is -ve and called cathode.
then again bend the cathode lead down below to the bulb part of led, and do this same thing for all 64 led's and then you are done and place all led's in the jig and start soldering out all of them layer by layer
once you finished the 4 layers then stack all of them over one another and solder all cathode points where they touch each other and everything else will be in the manual. Its so simple than other things but you better use flux free solder wire, and you can do all the job done within 3hours.
Once you are ready with the cube then mount the cube to a pcb board as in fig.
then bring all cathode points down using some wires and then solder all the cathode points side by side.
for easy understanding I named the 1st cathode row as A 2nd as B 3rd as C and 4th is D.
and the 1st point cathode is a1 2nd is a2, 3rd is a3, and 4th is a4 same way i have named all the cathode pins as b1,b2,b3,b4,c1,c2,c3,c4,d1,d2,d3,d4 it will be very easy for the next step where we going to connect with arduino uno and program it with our laptop or pc using arduino software available from the arduino website.
Step 1: Construction of Jig
Step 2: Choosing and Soldering the Led's
Step 3: Creating Layers and Soldering the Layers
Step 4: Soldering All Layers and Mounting on the Pcb Board
Step 5: Connecting With Arduino and Programming Arduino and Testing Your Project
Link for arduino program