Hey Guy,
I'm building a led cube of 4x4x4 and I'm trying to use shift registers, 74HCT595N. Now I have 8 port per shift register so I would need 2 for the 16 points of the leds. But should I use another one for the negative layers / plane layers of the cube?
Current status is attached
You would need 8 x 74HCT595N wouldn't you? (To get 64 outputs).
You might find it easier to wire up the 64 LEDs as a matrix and then use a single MAX7219 chip. That will multiplex the 64 LEDs to whatever pattern you want. I did a write-up here:
Why should I need 64 pins? This is a 444 led cube, which means 4*4 = 16 pins, div 8 so 2 shift registers. My questions is simple, should I use another shift register for the 4 ground layer or should I just connect them directly to the Arduino.
Oh sorry, I just thought that 4x4x4 was 64.
should I use another shift register for the 4 ground layer or should I just connect them directly to the Arduino.
It depends on how much current they are taking.
It would have been good to plan how you were going to drive the cube before you started making it. There are many ways to make a cube, have you got a schematic?
No I don't have a schematic, this is just a testmodel. I was planning on making a 666 later on if I succeed, which I will make a schematic for.
