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LED Matrix..

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AtomSoft

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Making a 16x24 LED matrix and wanted to know whats the best way to interface to it? Should i simple use a large PIC and 2 ports ? Like PORTB and PORTC ? Or 2 595 shift registers?

Im talking about the interfacing the rows. The columns will be controlled VIA 3 595 shift registers and 3 ULN2803... (with resistors of course.)
 
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595s are easy. But on Mike (K8LH)'s suggestion I used a MIC5891 and MIC5821 for my circuit which you can view here: https://www.electro-tech-online.com/threads/8x8-matrix-pcb-completed.107871/

This allows for better cascading using the same circuit, if you choose to expand to multiple 8x8 modules. You will see all the advice I got a long time ago here: https://www.electro-tech-online.com/threads/led-matrix-with-less-pins.89292/

If I did it again and I wanted cool effects, I think I'd look for a purpose built LED driver. There are lots now (think of the sort that drive huge outdoor RGB LED displays) and they are a sensible price.
 
I was going to try a 74HC138 inverting decoder, and dual pfet packages for the matrix rows, if I ever get back to that project.
 
Making a 16x24 LED matrix and wanted to know whats the best way to interface to it? Should i simple use a large PIC and 2 ports ? Like PORTB and PORTC ? Or 2 595 shift registers?

Im talking about the interfacing the rows. The columns will be controlled VIA 3 595 shift registers and 3 ULN2803... (with resistors of course.)

I think you can use two ports to minimize the headache.
 
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