8x8x8 LED Cube

[Rjss3]

Sir, did you have a chance to load those pictures?

[ThePyroElectro]

Sir, did you have a chance to load those pictures?

Hope this helps:

http://pyroelectro.com/files/888_top.jpg
http://pyroelectro.com/files/888_bottom.jpg

[Rjss3]

Sir, did you have a chance to load those pictures?

Hope this helps:

http://pyroelectro.com/files/888_top.jpg
http://pyroelectro.com/files/888_bottom.jpg

Thank you so much! I really appreciate it, as well as sharing all your projects with us!

[KDLaun]

Hello All,

Finally got around to posting some pictures of my cube project online.
You can see them here:

http://www.instructables.com/id/Club-Ja ... -Cube-Kit/

-KDL

[goroth]

So I have built the Jameco 8x8x8 led cube but I have a few problems.
1.) I need to swap the Y and Z axis without rewiring the bottom of the cube. I changed the setvoxel but I need a more consistent way.
2.) All the lights on my cube seem to light up fine with except when I try light up single leds by using the setvoxel for some specific leds.
Like if I run setvoxel(3,0,0) I get nothing and if I run setvoxel(4,0,0) I get nothing.
But if I run setvoxel(3,0,0) and setvoxel(4,0,0) at the same time then they will both light up.
This seems to be consistent with the entire column.
I swapped the 74hc574 chip with other chips and even tried another 74hc138 but no luck.
I removed all other drivers from the board and wired the 138 directly to the 574 but still not luck.
Any ideas?

[goroth]

It was a bubble of solder between 2 output legs.

Now if you have any tips on swapping the Y and Z axis, that would be great.

[ThePyroElectro]

So I have built the Jameco 8x8x8 led cube but I have a few problems.
1.) I need to swap the Y and Z axis without rewiring the bottom of the cube. I changed the setvoxel but I need a more consistent way.
2.) All the lights on my cube seem to light up fine with except when I try light up single leds by using the setvoxel for some specific leds.
Like if I run setvoxel(3,0,0) I get nothing and if I run setvoxel(4,0,0) I get nothing.
But if I run setvoxel(3,0,0) and setvoxel(4,0,0) at the same time then they will both light up.
This seems to be consistent with the entire column.
I swapped the 74hc574 chip with other chips and even tried another 74hc138 but no luck.
I removed all other drivers from the board and wired the 138 directly to the 574 but still not luck.
Any ideas?

Sounds like a problem! If its the case that things are simply wired backwards, you should be able to change it programmatically. The Z axis is controlled by touching the 2n2222's that connect each plane to ground, which is seperate from setting the (X,Y) individual LEDs on each individual plane. Making this change programmatically is possible if you really understand the code.

In my opinion, re-wiring the bottom of the cube would be faster than debugging/re-writing the code to account for the axis change. Take and throw up some photos on imgur of your design so far if you have more questions.

Good luck!

Hello All,

Finally got around to posting some pictures of my cube project online.
You can see them here:

http://www.instructables.com/id/Club-Ja ... -Cube-Kit/

-KDL

Awesome!!

[larryn]

Chris, I have a suggestion. On the pagehttp://www.pyroelectro.com/projects/8x8x8_led_cube/hardware3.html, it would help if the capacitors were soldered in before the other wires. Also, please show the underside with the capacitors in place. I suspect that the plan is to connect one wire of the capacitor to the Vcc and the other to ground. It is easier to do this before the wires are soldered in place.

Loved your tutorial. I'm still working on it.

[ThePyroElectro]

Chris, I have a suggestion. On the pagehttp://www.pyroelectro.com/projects/8x8x8_led_cube/hardware3.html, it would help if the capacitors were soldered in before the other wires. Also, please show the underside with the capacitors in place. I suspect that the plan is to connect one wire of the capacitor to the Vcc and the other to ground. It is easier to do this before the wires are soldered in place.

Loved your tutorial. I'm still working on it.

Hi Larryn,

Yea, I won't disagree. Soldering in the 0.1u caps before doing all the wiring work would be a little easier. There's no good view of the bottom of the 0.1u's but here's two pics of the complete top/bottom:

http://pyroelectro.com/files/888_top.jpg
http://pyroelectro.com/files/888_bottom.jpg

Maybe that helps.

Thanks for the kudos and good luck! Post pictures of your completed cube!

[lusis987]

Hi pyroelectro!

Are you still wisiting this site? Could you help me with fixing my cube?
I build it using your instructable, but using idea for connecting pin10 and pin20 with capacitor. As power supply used 5v charger connected stright to power bus.
/
When powering on the cube lights up just 1st layer. Tested voltage on other layers - just 1.6v. But why?

[ThePyroElectro]

Hi pyroelectro!

Are you still wisiting this site? Could you help me with fixing my cube?
I build it using your instructable, but using idea for connecting pin10 and pin20 with capacitor. As power supply used 5v charger connected stright to power bus.
/
When powering on the cube lights up just 1st layer. Tested voltage on other layers - just 1.6v. But why?

Hello,

Sounds like there's something wrong with your hardware. You'll have to debug from the 74_138 back to the 595's to see why the clock/enable signal isn't arriving.

It'll be a bit tedious to debug....

[lusis987]

Great, you are still here
I hope that connecting 10pin and 20pin cant be the fault. But Im to thinking that voltage not switching throught layers

How i understood - I need to change 74HC138 to older one 74HC595. Read the datasheet - there are big difference from pin 9 to 16. What should i do? Conect in the place of 74_138 and then what.

What would you do?
PS

I have got 595 chip.

[Paul]

Hello. I could get more details about the construction of the hardware ?

I finished building the 8 layers of the cube and now I want to grab the hardware and I would not want to fail, so I wanted to ask more info.

I'm sorry but my English is not very good.

All the best and expect an answer as soon

[ThePyroElectro]

Hello. I could get more details about the construction of the hardware ?

I finished building the 8 layers of the cube and now I want to grab the hardware and I would not want to fail, so I wanted to ask more info.

I'm sorry but my English is not very good.

All the best and expect an answer as soon

It's all there in the hardware section

http://www.pyroelectro.com/projects/8x8x8_led_cube/

The parts list has a link to the kit with all the parts used. I think that should show you all you need to know, just follow the schematic when building.

[lusis987]

I'm too still working with my cube. But there ar problems, that I'm not understanding and cant find on board.
For now it works like this
https://www.youtube.com/watch?v=Du_jaxqxBXw
https://www.youtube.com/watch?v=g0kX3RFx_n4

I'm starting to think to rebuild the plate and use PCB hatching to reduce use of wires.