Can't find how to use these LED matrixes

Using Arduino LEDs and Multiplexing
1

Hello,
I found some LED matrixes but have no idea how to use them. I can't find more information online or what library I should use. It seems like an I2C device but has four parts of pins and a selector. Does anyone have any advice on how to use it or what it is other than "buy a different device?" (which I have lots of these LED matrixes)

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2

do you can pull out matrix off the PCB?

3

Thanks, kolaha. I'm doing that. But this module has more pins than common MAX7219 LED module. It's strange.

4

it looks like it can be daisy chained in two dimentions

5

Yes, it does look very similar to the MAX7219. I'll be able to take it apart soon.

6

Sorry for waiting so long time. It does writes MAX7219 on the chips . The full name is "MAX7219EWG HLF A9". Thanks again, kolaha!

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