MOSI and SCK in Parallel...Thats what I needed to make sure of...its this way in the schematics too....
I have 300 Ohm resistors for the I sets (Pin 18) on each of the MAX7219 ....The ss0 - ss3 Will be controlling each individual LOADs....
I placed the 100 nF and 10 uF caps to suppress any of the EMI in the circuit. I also have the code integrated and compiled / verified in 1.0.1 IDE.
just need to solder in each of the 16 pinouts wires from the MAX7219s to each of the Matrices.....
I'll keep you posted....
I noticed you said lower case letters must be used too.... < -------definitely remember that...
in your code though, you have all the HEX codes for each of the letters...is that to define them once they are input from the serial monitor? I thought it would scroll all of those in sequence when I first downloaded and read your code.