P10 modules not displaying

Using Arduino LEDs and Multiplexing
1

I have been working with P10 modules for a while now, using the DMD library and everything was working perfectly.

After about a week, I tried to program another P10 module using the same exact code I used for the first one, but after the code uploads nothing is displaying on the P10 modules.

I've tried to change the module itself to another one I have, change the microcontroller (Arduino Uno) and even the connector. I'm also using a 5V, 10A power supply.

I'm suspecting that the problem is with the program, maybe the library or something.
Any suggestions to help please?

2

Since the code worked and there have been some hardware changes I am guessing it is a loose connection or something like that. Can you post a schematic, not a frizzy thing showing all connections. Also post links to technical information on all the hardware items.

3

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