Tiled Neomatrix on different pins - only first defined works

[johnwasser]

@nifty950

I ended up doing this and get 0 for both matrix1 and matrix2:

A zero for .numPixels() means that there wasn't enough memory available to create the object.

@nifty950

Getting the same value for both is suspicious,

In what way is it suspicious? If both are zero it means there wasn't room for either matrix. If both are 512 (16x16x2) it means there was room for both. If the first one is 512 and the second one is 0 it means there was room for the first but not the second.