Help Please with Large(ish) RGB Matrix Common Anode Matrix

(Sorry I have edited the title previously said common cathode)I began some small projects when the lockdown started as I have always wanted to set aside time to do ths things, but never seemed to have the time to do it.

Anyway I began a few arduino projects with LEDS and I have begun building and RGB LED matrix with Common Anode 5mm 3.3 volt leds.

I have previously produced a Common Cathode matrix of 8x8 RGB Leds but could not find a common cathode project tutorial so I began a common anode.

My original plan was to build a 8x8x8 cube, however the programming and set up is a little ambitious for the level of experience I have but understand the processes behind the programming a bit more on 16x32 matrix.

The probem I have is that I would like to build the 16x32 matrix and I have parts to either build with HC74595 or LM3914 display driver (though I believe those are for monochromatic), IRF 9450 P Channel Mofsets, and \TLC5940 chips to go with them, and this the problem, which way to go? I am trying to find a schematic using one of those chips to build on and create a 16x32 matrix, I have been taking images at each stage (even keeping the screw ups) to show at a later date and could do with some advice as which chipset to use and if anyone could point me to a reasonable schematic to follow, I understand the principle of daisy chaining the chips together, its just I have not seen a schematic for a row longer than 8 bits. I have Uno, Micro and ano Arduino and a few compatibles and plenty of everything else including standard components. I am also looking to add the ESP8266 (Arduino wifi module) into the schematic in order to upload new 'images' I also believe that the RGB leds are 8bit.

Im not looking for other people to do my homework I am hoping for a couple of pointers on where I can read up on what to do next or a tutorial that will help me decide which way is better to go (or at least how to chain 16 leds together, I understand the principle that 'pushes' the values of the leds using the shift registers and persistence of vision, but I cannot find a rgb matrix larger than 8x8 unless its for a pre-manufactured device.

In tthe matrix the columns1 are the common anodes connected and each row are the cathodes of each colour if that makes sense. I intend to upload a schematic later after posting.

Can anyone tell me where I can follow a similar tutorial to build this size?

I will post the entire project when complete.

Many Thanks in advance.

This sounds rather confused!

The LM3914 for one, is a dot/ bar display driver, it would be very difficult to use it to control a matrix of any form.

You can most certainly use a number of MAX7219s - with the limitation that you can only connect two RGB LEDs per row since each requires three column (cathode) drivers out of the eight available, so 16 RGB LEDs per MAX7219.

Similarly, one TPIC6B595 can drive eight cathodes for a full 8 by 8 matrix so you would need three overall while a fourth could drive eight P-FETs for the anodes.

I am not too familiar with other drivers. :grinning: