hi,im not know more of these led matrix,this is a present of my friend,he disassemble an scroll text but he is crazy,and only but he want look inside,but after it demage the parts of plastic and "save" these two,it place thise on room and after one year it want cestine that or prensent to me,im happy for these,but it not remember the model or other of scroll text...
im read on pcb is writted 74HC595 on the all matrix led( 16 for any pieces) not have writted nothing,
on the 16 pin connector aren't writted the pin of connect to arduino ??
how is possible for me to help you to help me ??