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Does anyone know how to make a big Led matrix display 20x20 LEDs for audio visualisation?

If anyone knows how to build it pls answer!! Thx in advance!



Use 8 x 8 matrix LEDS , in a 3 x 3 group.

Steve
KcPower (author)  steveastrouk7 years ago
But how to control it?
Ah, that's not what I thought you meant.

Try these !
www.allegromicro.com/en/Products/Part_Numbers/6278/
Use them on, say, the columns, and use 74HC595 latches and then
www.allegromicro.com/en/Products/Part_Numbers/2981/index.asp for the rows.

You can mess around with transistors and serial latches, but its not worth the hassle.

I assume you are aiming to use an arduino to drive it ?