What to drive a led matrix with

[JoeGuitar]

Hi,

I have a bunch (40) of 8x8 lex matrixs that I want to be able to drive, but I don't know what ic(s) to get to do it.

I just used i/o pins on my picaxe to drive one one of these to get it going but now I want to be able to get them all going at once & use them like a marquee.

So, what ic's would be best to get to drive these leds? I'd like to use something current rather than try and source an obsolete part.

I'm kinda new to all of this so keep that in mind.

Thanks for your time.
Joe

 

[Optikon]

Hi,

I have a bunch (40) of 8x8 lex matrixs that I want to be able to drive, but I don't know what ic(s) to get to do it.

I just used i/o pins on my picaxe to drive one one of these to get it going but now I want to be able to get them all going at once & use them like a marquee.

So, what ic's would be best to get to drive these leds? I'd like to use something current rather than try and source an obsolete part.

I'm kinda new to all of this so keep that in mind.

Thanks for your time.
Joe

Can you use a row & column driver like this?

https://datasheets.maxim-ic.com/en/ds/MAX6960-MAX6963.pdf

Came up from a google hit "8x8 led driver"

Try spending some time doing simple searches..

 

[blueroomelectronics]

How many do you hope to drive at once? All 40 8x8 arrays? What configuration?

 

[JoeGuitar]

How many do you hope to drive at once? All 40 8x8 arrays? What configuration?

Hi Bill,

I hope to start out with two rows of ten.

Like this;

XXXXXXXXXX
XXXXXXXXXX

Joe

 

[blueroomelectronics]

OK, so here are the calculations for power on such a display.
For a 16x80 LED you'll need to run up to 80 LEDs at once, to get any brightness at 1/16 duty you'll probably have to pump about 60ma through each LED.
So you'll need a 4.8A LED power supply AND at least 5A drivers.

Maxim makes nice 8x8 LED driver ICs like the MAX6960.

 

[JoeGuitar]

Thanks -

Where do I purchase the Maxim ICs from? I looked around at a few places I usually order stuff from and couldn't find the Maxim 6960.

Joe

 

[blueroomelectronics]

Digikey sells the MAX6960