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Topic: MAX7219 Dot Matrix 8x8 4 in 1 (Read 1 time) previous topic - next topic

CatShadow

I recently bought a MAX7219 Dot Matrix Module 4 in 1 for my Arduino Uno, but I can't figure out how to make it work !

I researched during hours, but nobody seems to have explained it yet.

Before that, I had the single version, and it worked really well, with the LED Control library.

I guess you need a different kind of library for the 4 in 1 to work.


I'm asking for help !

Thanks for your time  :)

Grumpy_Mike

#1
Feb 03, 2017, 01:23 pm Last Edit: Feb 03, 2017, 01:29 pm by Grumpy_Mike
You just send four lots of data at once one after the other. If the libiary won't handle that then you have write the code yourself. It is not difficult.

This page
http://playground.arduino.cc/Main/LedControl
says
Quote
The library can address up to 8 devices from a single LedControl-variable.

mohun74

Hi
got a very reliable library as bitbangedspi by nick gammon or search ralph bacon on youtube. cheers. works fine

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