This is a schematic diagram which I'll be following to wire and connect all the materials/components together to create my 5x5x5 LED Cube.

This is a breadboard. A breadboard is for making experimental model of an electric circuit. This is where the wires, resistors, transistors, and 3-8 line decoders are connected to.

A Transistor is a semiconductor device with three connections, capable of amplification in addition to rectification. Instead of buying a 2N4401 Transistor, I used the PN2222 Transistor as an alternative. Both PN2222 and 2N4401 

The M74HC238 is a high speed CMOS 3 to 8 line decoder. There are three binary select inputs (A, B, and C) which determine which one of the eight outputs (Y0-Y7) will go high. This chip has three enable inputs (G1, ~G2A, and ~G2B); when any enable pins are brought low (or high in G1’s case), all output pins are pulled low.

This is a great tool if you need to increase the number of outputs on your micrcontroller. For example, it’s used in the 5x5x5 LED Cube to help an ATmega168 control the 125 LEDs.

The Arduino Uno is a microcontroller board based on the ATmega328 (datasheet). It has 14 digital input/output pins (of which 6 can be used as PWM outputs), 6 analog inputs, a 16 MHz ceramic resonator, a USB connection, a power jack, an ICSP header, and a reset button

Picture when I was soldering the LED anode together to create rows as well as soldering the layers together to create 5 columns.

This is the first layer of the LED Cube. Another 4 are made.

Once all LED's are placed into the drilled hole, using 2 wires, place them at the end of the LED's. This will allow all the LED's to connect.

Another LED is placed in the drilled hole. The anode of both LED should touch. Solder both anode together.

The first bent LED is placed into the drilled hole.