3d Ledcube

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About: Student Kortrijk Howest 1NMCT4

How to make a ladcube 8x8x8

Step 1: Make a Grid

Start by making a 8x8 grid with a gap of 2.5 cm and print it.

Step 2: Make a Wooden Frame

1.

Make a wooden plate of 22 cm by 22 cm and place this grid on it.

You drill a 5 mm hole at each intersection. This is the model to make the 8 layers.

2.

After this you make the same plate again but you drill the holes with a 3 mm drill.

This is the bottom of the LED tube.

3.

Make 4 boards of 22x4cm to make a box that contains all the components and glue them together until you have a box.

I made a hole at the front for the display and at the side 3 holes for my 3 sensors.

4.

You can then paint this housing in a desired color.

Step 3: Get the Coper

Cut a piece of copper wire (1.5 mm²) of 25 m. Strip the wire and straighten it using a vice.

Step 4: Cut the Copper Wire

After this you cut 152 pieces of 30 cm to use as conductors.

Of the 152 you fold 72 pieces.

Step 5: Add the Copper Wire With Glue.

These copper bars will be attached with hot glue in the previously made plot.

Step 6: Soldering Cables.

After the glue is sufficiently hard you can solder the 8-pin cables to the copper bars. You work layer by layer and in the same order of colors.

Step 7: Soldering the Circuit Board.

You solder all components on the printed circuit board and close the gaps layer by layer on the provided strips.

Step 8: Connect the Power Suppply

Connect the power supply to the printed circuit board via 2 wires plus and minus (the ball on the printed circuit board is the plus). An extra clamp is provided to branch off the 5V.

Step 9: Power for Raspberry Pi 5V!

I have provided a cable to the power supply to power the Rpi.

This is a micro usb cable.

Step 10: The Sensors

the ldr sensor is coupled with the MCP3008. And the micro and temperature sensor are coupled with a gpio pin of the raspberry pi. everything can be found on the plan.

Step 11: Make Layers.

You put the LEDs in the plate that we made earlier. The plus of the LED (long leg) must always rise. We also use 3 20 cent coins to put the 30 cm copper rod. You solder this rod to the min.

You continue like this until you have filled all the holes.
At the edge you connect all rows with each other.

Do this 8 times and then the layers are ready to be soldered to the base piece.

Step 12: Finishing the Layers

Now slide down layer by layer over the bars that come out of the black box.

Pay attention! The bars must be nicely straight and in the right place. Now you can always solder the long leg to the copper bars.

Step 13: Building the Cube!

For layer 2 you use 4 blocks of 2.5 cm high as a space.

Do this 8 times in succession.

Step 14: Finish the Cube

Now the cube is ready. Cut off the excess copper pieces.

Step 15: Programming

You can now start programming.

I use 9 shift registers 74HC595. These are serially linked. The first 8 operate layer per layer and the last one operates 8 transistors to switch the GND of the layers.

the code can be found here: https://github.com/Jelmer-Meurisse/Ledcube.git

parts:

9x 74HC595

16x 2N2222

64x 220 Ohm resistor

1x pcb board

1x raspberrypi model 3

1x micro LM393

1x LDR

1x DHT11

1x LCD dipsplay 2x16

9x 16pin ic socket

512x blue mm leds

1x power supply 5v10A

1x cable 3p

15m copper 1,5mm²

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