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Topic: ArDeci -> MAX7219 (x3) -> RGB 8x8 LED Matrix prob. (Read 9 times) previous topic - next topic


I have tried with different 7219IC, same result found that means my IC should be working fine.

Still all the LED light up in two cases:

1) I just have 3 digital pins and GND connect with Arduino board
or 2) GND and 3V / 5V are connected with Arduino with the IC

anyone experience this? http://www.flickr.com/photos/siusoon/3245731401/


o I have successfully wired up the LED finally, the reason for not working because I have just put the rows <-> map to SEG of IC instead. Now is working fine. Here is my testing video: http://www.vimeo.com/3073286

One more question is the IC is getting hot, is it normal? and how to avoid this? Currently I have put a 10m capacitor between the GND and V++.


Happy to hear that.

What IC is getting hot? The MAX72xx?
If so what value of Iset are you using?
"Data is not information, information is not knowledge, knowledge is not understanding, understanding is not wisdom."
~ Clifford Stoll


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