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Erm...isn't yellow-purple-brown 470 ohms? Also, the voice-over edit in post was funny. :-)

Still, the thing looks cool. A definite argument for having lots of LEDs lying around...

Neat project but dude, you guys need to switch to decaf. As if the blinky-blinky lights weren't sufficient to give me a seizure to begin with...

I agree - I like the information, but Bre's pulsing waving hands and energy can be a little distracting at times..

Love ya, Bre! Keep em' coming! The projects are great!

neat project,can be used in discos

Quick note, the pdf also specifies a 470 ohm resistor in the "What you'll need" list.

A very cool project which im planning to make.

I just wonder if its possible to make a bigger matrix than a 3x3x3 one with the miniPOV kit.

Or can i make a matrix with a PIC programmer i buy here (in the netherlands) Because the shipping costs are a bit high for the miniPOV kit to get here.

Sorry if i post this at the wrong place but i couldnt find a forum for this.

I'm glad somebody finally said something about how annoying Bre can be, now I know I'm not crazy. He seems like a great guy but his face in macro gets old :)

I didn't want to complain about the over-enthusiasm, but the on-camera personalities sometimes make these podcasts seem overly juvenile and a little embarrassing to watch.

I agree with the other comments: good material, sub-optimal presentation.

Is there a fourm for this project? I have a few questions on some of the details that seem to be missing on how to do this project

Nonsense. I *love* the energy level of podcasts. Bre, don't ever change!

I like Bre and his spasmatic mannerisms. I wonder if he has a hairy chest.

But as was asked before, do we need the mini pov kit?

You can use any microcontroller you have laying around, as long as you can use 12 I/Os on it. I build mine on a 8051 eval board from silicon labs.

I'm going to build this as soon as I can get the minipov kit. Looks like a good place to start.

I want to build a 10x10 like the ones I've seen around the net, but no one has posted a good how to complete with schematics, parts list, and code.

Once I have mastered the 3x3, does anyone know how to step this up to a 8x8 or 10x10?

Thanks

I don't have a POV kit laying around, but I do have an Ardunio. I assembled the cube but I'm trying to work out how to wire it to the board. I'm pretty sure I know how to provide 9 +V to the columns, but I'm sketchy on how to get 3 -V connections out of the board. Any suggestions?

I feel like an idiot asking this, but I don't understand the wiring. I need 9 positive voltage ports to address each of the 9 LEDs on a layer. And then I need 3 grounds? How do I turn off two ground ports? (I'm using an Arduino.) Do I set them HIGH so there's no voltage across?

As I type this, I'm thinking the answer is yes.

How are the grounds connected? =/ I know they are common to each layer, but how are the layers connected?

Posted by: noob_for_life on June 15, 2008 at 8:54 AM

Noob questions from a noob.

The last picture in the PDF shows four wires--one with the 47 ohm resistor--coming out of the processor socket.

What do they connect to? I assume they go to the cathodes. But

(a) Does the one with the resistor connect to somewhere special?
(b) How do I decide which cathodes (or whatever) they connect to?
(c) If I choose which cathodes to connect, can anyone recommend a few to start with?
(d) And why four wires?

Thanks!

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