๐Ÿ“ฃ๐Ÿ“ช ๐Ÿšš Adafruit will not be shipping USPS orders Monday October 14, 2019 ๐Ÿ—“. Expedited USPS orders placed after 11am ET ๐Ÿ•š Friday October 11 will go out Tuesday October 15 ๐Ÿ“ฃ๐Ÿ“ช๐Ÿšš
0

Led cube
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

Led cube

by viper905 on Fri Mar 13, 2009 3:52 pm

Makezine did a great job with the 3x3x3 led cube, but is there a way to make it a 4x4x4 or a 5x5x5 cube using the minipov3 kit? 8)
viper905
 
Posts: 2
Joined: Fri Mar 13, 2009 3:50 pm

Re: Led cube

by mtbf0 on Sun Mar 15, 2009 6:45 am

the cube uses one pin for each of nine leds on a level, then three more pins to select a level.

4x4x4 would require 16 pins + 4 pins, which would be a perfect fit for a 20 pin microcontroller if it you didn't need vcc, ground and reset.

then there's charlieplexing, a technique of which i have an imperfect understanding. you could wire a 4x4x4 cube with nine i/o lines or a 5x5x5 cube with twelve i/o lines, but the wiring would be really challenging.
"i want to lead a dissipate existence, play scratchy records and enjoy my decline" - iggy pop, i need more
User avatar
mtbf0
 
Posts: 1645
Joined: Sat Nov 10, 2007 12:59 am
Location: oakland ca

Re: Led cube

by viper905 on Sun Mar 15, 2009 1:01 pm

Thanks for the insight. I might look into getting either another microconrtoller or look into charlieplexing.
viper905
 
Posts: 2
Joined: Fri Mar 13, 2009 3:50 pm

Re: Led cube

by gwv2002 on Fri Mar 27, 2009 10:00 am

Hi,

I'm working on the 3x3 cube and see the placement of 8 wires but not the 9th anode, cathode and resistor. I have figured out a cube with eight lights per level but I'm curious about the mysterious 9th. Can anyone enLighten me?

Thanks.
gw
gwv2002
 
Posts: 1
Joined: Fri Mar 27, 2009 9:56 am

Re: Led cube

by mtbf0 on Sat Mar 28, 2009 6:36 pm

you'll have to solder directly to the portd pads where the socket is soldered to the circuit board. you can take a look at the source code for the project to figure out which pins are used. there will be one for the ninth anode and one each for the common cathodes of each of the three levels of the cube.
"i want to lead a dissipate existence, play scratchy records and enjoy my decline" - iggy pop, i need more
User avatar
mtbf0
 
Posts: 1645
Joined: Sat Nov 10, 2007 12:59 am
Location: oakland ca

Re: Led cube

by Pixelmonster on Thu May 13, 2010 9:49 am

Hi,

I'd like to build a LED cube, but I didn't found a circuit board layout on the web.
I only found a picture of the circuit diagram, but I'd need the original file. (I think it's designed with eagle ?!)
If someone have the layout, I'd only need the original, because I'd manipulate it myself.

Please help me.

Thanks, Michael

PS: Sorry for bad english :oops:
Pixelmonster
 
Posts: 8
Joined: Thu May 13, 2010 9:35 am

Re: Led cube

by mtbf0 on Thu May 13, 2010 4:22 pm

Pixelmonster wrote:I'd like to build a LED cube, but I didn't found a circuit board layout on the web.


the particular led cube under discussion here is based on lady ada's minipov3 board. the project was originally present as a weekend project on the make magazine blog. it is described on mitch altman's site, here.
"i want to lead a dissipate existence, play scratchy records and enjoy my decline" - iggy pop, i need more
User avatar
mtbf0
 
Posts: 1645
Joined: Sat Nov 10, 2007 12:59 am
Location: oakland ca

Re: Led cube

by Pixelmonster on Fri May 14, 2010 1:35 am

Thanks for your answer and sorry for my bad phrasing.

I know how to build the cube, but I need the circuit board layout of the MiniPov v3.
If I have this, I could add a resistor and switch the led sockets to simple pads for soldering, ...
Pixelmonster
 
Posts: 8
Joined: Thu May 13, 2010 9:35 am

Re: Led cube

by adafruit_support_bill on Fri May 14, 2010 5:14 am

The Eagle files are on the MiniPOV3 web page: http://www.ladyada.net/make/minipov3/download.html

adafruit_support_bill
 
Posts: 74601
Joined: Sat Feb 07, 2009 10:11 am

Re: Led cube

by Pixelmonster on Fri May 14, 2010 12:03 pm

I knew this page, but I didn't saw this link.

Thank you very very much!

Fast and good help, I like this forum!

Thanks!!!
Pixelmonster
 
Posts: 8
Joined: Thu May 13, 2010 9:35 am

Re: Led cube

by Pixelmonster on Sat May 22, 2010 4:34 pm

Hi,

it's me again (sorry :( )

Now I built my LED Cube with a manipulated circuit board and it's working quiet good.

But it has a big problem. It's flickering and I don't know why.

Do you know why?

Thanks, Michael
Pixelmonster
 
Posts: 8
Joined: Thu May 13, 2010 9:35 am

Please be positive and constructive with your questions and comments.