LED QUBE 3×3 WITH ARDUINO UNO

In this project I will give instructions on how to construct a 3 X 3 LED cube. In step 1 I have included a list of materials which used in my project including where they were purchased. In Step 2 will give detailed instructions how the LEDs should be soldered together. And to end with, step 3 will give instructions on how to wire up the led cube to the breadboard and Arduino. Data used in constructing the LED cube can be seen clearly in the steps that follows.

I have not included the program to make the LED cube glow up because its a work in progress. The program is the hardest thing to put together because I am just starting to learn the Arduino software. All ready made programs can be found on the internet but making your own is what its all about. I will update this intractable with the finished program as soon as it is over.

In the given below paragraph, I describes how the circuit works which may or may not make it easier to write a simple program to turn the LEDs on and off.

How it works, Basically, a pin from the Arduino is connected to the LED anode and a different pin is connected to the base on the transistor. The controller is then connected to the LED cathode and the emitter is then connected to ground. When the pins for the base and LED anode are turned on this causes current to flow through the LED. Thus turning it on. A great way to turn it on and off is to keep the base pin "on" and turn the anode pin "on" and "off.

Step 1: Using Materials

All the materials were purchased at robomart.com but way better deals can be found on the internet.

List of Materials

27 leds

3 NPN 3904 transistor
9  220 kilo-ohm resistors
3  22 kilo-ohm resistors
wiring kit
bread board
Arduino Uno

solder

 soldering iron

.Step 2: Soldering of LED's

To making the soldering easier, most people drill nine holes into a piece of wood, place the Led’s in them and solder them together. I found it cheaper and faster to use a cardboard box. In this way, the holes do not have to be drilled they can be punched in with a semi-sharp device like a pen. 

Each layer of LED's has to be soldered individually. To solder each layer, stick the LED's in the holes and bend down the cathodes to solder all of them to each adjacent LED. After all three layers have been soldered and you should have nine anode leads from each layer. Solder each adjacent layer of anode leads to the corresponding layer.

I have included a picture below on how the finished piece is supposed to look.

Step 3: cabling on the breadboard

 

After soldering the Led cube there should be nine anode Led’s and three cathode leads (one for each layer). Hook up the anode leads to the breadboard. Each should have its own strip. Connect a 220 kohm resistor each anode and wire to a pin on the Arduino Uno. Each anode will have it own pin connection on the Arduino. 

Now further we connect the three NPN 3904 transistors to the breadboard. The controller and base should be connected to separate strips on the breadboard while the emitters can all be connected to one strip. Connect the emitter strip to ground. Wire a 22 kohm resistor to each base lead and connect to a pin on the Arduino. You should now have a total of 9 + 3 = 12 pins wired on the Arduino. Connect each controller lead to a separate cathode connection on the LED. Each controller should be connected to a different layer.

                                                                  CONCLUSION

Now our project are ready. But you want to make this type of project, you more careful when you soldering the led in the cube form on Arduino.And second thing is that make sure about your connections which you create on the Arduino.