Comments on: [Arduino] 3D LED Cube http://blog.alexgirard.com/arduino-3d-led-cube/ Yet Another Blog Fri, 30 Jul 2010 20:59:10 +0000 http://wordpress.org/?v=2.6.3 By: alx http://blog.alexgirard.com/arduino-3d-led-cube/#comment-166 alx Tue, 24 Nov 2009 10:44:19 +0000 http://blog.alexgirard.com/2007/10/14/arduino-3d-led-cube/#comment-166 Hi Joee, unfortunatly, I've done this sketch a long time ago, and I'm not sure I can remember everything... If I remember correctly, the PNP are used to select the layer to light on. It's switching with a frequency high enough to looks like all 3 layers are switched on. I can't remember the type of transistor, but I think they were pretty universal ones. I havn't tried the shift registers, the main interest for me was to do binary manipulation directly in the code. good luck for your tests ;) Hi Joee,

unfortunatly, I’ve done this sketch a long time ago, and I’m not sure I can remember everything…

If I remember correctly, the PNP are used to select the layer to light on. It’s switching with a frequency high enough to looks like all 3 layers are switched on. I can’t remember the type of transistor, but I think they were pretty universal ones.

I havn’t tried the shift registers, the main interest for me was to do binary manipulation directly in the code.

good luck for your tests ;)

]]> By: Joe http://blog.alexgirard.com/arduino-3d-led-cube/#comment-165 Joe Mon, 23 Nov 2009 21:49:47 +0000 http://blog.alexgirard.com/2007/10/14/arduino-3d-led-cube/#comment-165 I built a 3 x 4 cube using the Arduino but the current draw is right on the edge of maxing the permissible current limit on the Ardunio. I didn't use any transistors, but since building my cube, I've looked at others and they for the most part all use PNP transistors. Can you tell me the purpose and what type you're using? Also, is it possible to get some kind of schematic as to how you hooked them up? Since you are only using 3, I assume they are the ground leads (1 for each layer), is this correct? Have you tried a shift register? I built a 3 x 4 cube using the Arduino but the current draw is right on the edge of maxing the permissible current limit on the Ardunio. I didn’t use any transistors, but since building my cube, I’ve looked at others and they for the most part all use PNP transistors. Can you tell me the purpose and what type you’re using? Also, is it possible to get some kind of schematic as to how you hooked them up? Since you are only using 3, I assume they are the ground leads (1 for each layer), is this correct?

Have you tried a shift register?

]]> By: Alexandre Girard http://blog.alexgirard.com/arduino-3d-led-cube/#comment-60 Alexandre Girard Wed, 21 Nov 2007 19:29:03 +0000 http://blog.alexgirard.com/2007/10/14/arduino-3d-led-cube/#comment-60 Hi Florian, thanks for the correction, I've edit the link now, and your website link too ;) Hi Florian,

thanks for the correction, I’ve edit the link now, and your website link too ;)

]]> By: Florian Jenett http://blog.alexgirard.com/arduino-3d-led-cube/#comment-59 Florian Jenett Wed, 21 Nov 2007 19:23:24 +0000 http://blog.alexgirard.com/2007/10/14/arduino-3d-led-cube/#comment-59 the link above is wrong, here's the correct one: http://blog.alexgirard.com/wp-content/uploads/2007/10/refresh_rate.pde the link above is wrong, here’s the correct one:

http://blog.alexgirard.com/wp-content/uploads/2007/10/refresh_rate.pde

]]>